Agscience fair

If six plants solf for prices of $4.10

$4.32, $5.52, $7.18, $7.92 and $9.58, what is the mode of these prices? ,

Find the median of the following amounts: $4.10

$4.32, $5.52, $7.18, $7.92 and $9.58. , 6.35

Find the average of the following amounts: $4.10

$4.32, $5.52, $7.18, $7.92 and $9.58. , 6.44

11

10, 13, 11, 12, 16, 14" , 12

24

15, 18, 20, 18, 22, 24, 26, 18, 26, 24

"

Guess

Which of the following is an ethical practice when working with animal subjects?

None of the answers are correct

Entrepreneurship

a student owned business that serves as an SAE

Opening/closing ceremony

a traditional contest designed to emphasize the purpose of meetings and duties of officers

Single inclined plane

a type of bevel with one edge used on wood chisels and plane ions

The ecologist used a laser rangefinder and a piece of equipment called a clinometer to find the heights of the trees. Later

she found that her equipment was calibrated incorrectly and indicated that all trees were .5 m taller than they really were. What typre of error occured? , Inaccurate measurement

Romex

sheath cable containing individually insulted electrical wires

A scientist testing the affects of a chemical on apple yield sprays an orchard with the chemical. A second orchard does not receive the chemical. In the fall

the number of apples harvested from each forest is counted. The orchard sprayed with the chemical yeilds an average of 60 apples per tree, the other orchard yields an average of 40 apples per tree. Based on the data, the scientist would: , Determine that the chemical increases apple yield

Anneal

to cool steel slowly so as to make it soft and malleable

Rip

to cut along the grain of wood

High speed drill

twist drill made tempered especially to drill holes in steel

In chemistry class

Allen determined the effectiveness of various metals in releasing hydrogen gas from hydrochloric acid. Several weeks later, Allen read that a utilities company was burying lead next to iron pipes to prevent rusting. Allen hypothesized that less rusting would occur with the more active metals. He placed the following into 4 seperate beakers of water: (a) 1 iron nail, (b) 1 iron nail wrapped with an aluminum strip, (c) 1 iron nail wrapped with a magnesium strip, and (d) 1 iron nail wrapped with a lead strip. He used the same amount of water, equal amounts (mass) of the metals, and the same type of iron nails. At the end of 5 days, he rated the amount of rusting as small, moderate, or large. He also recorded the color of the water. What is Allen's hypothesis? , If the chemical activity of the metallic wrapper is increased, then less rusting will occur.

In chemistry class

Allen determined the effectiveness of various metals in releasing hydrogen gas from hydrochloric acid. Several weeks later, Allen read that a utilities company was burying lead next to iron pipes to prevent rusting. Allen hypothesized that less rusting would occur with the more active metals. He placed the following into 4 seperate beakers of water: (a) 1 iron nail, (b) 1 iron nail wrapped with an aluminum strip, (c) 1 iron nail wrapped with a magnesium strip, and (d) 1 iron nail wrapped with a lead strip. He used the same amount of water, equal amounts (mass) of the metals, and the same type of iron nails. At the end of 5 days, he rated the amount of rusting as small, moderate, or large. He also recorded the color of the water. What is the control in this experiment? , Iron nail

In chemistry class

Allen determined the effectiveness of various metals in releasing hydrogen gas from hydrochloric acid. Several weeks later, Allen read that a utilities company was burying lead next to iron pipes to prevent rusting. Allen hypothesized that less rusting would occur with the more active metals. He placed the following into 4 seperate beakers of water: (a) 1 iron nail, (b) 1 iron nail wrapped with an aluminum strip, (c) 1 iron nail wrapped with a magnesium strip, and (d) 1 iron nail wrapped with a lead strip. He used the same amount of water, equal amounts (mass) of the metals, and the same type of iron nails. At the end of 5 days, he rated the amount of rusting as small, moderate, or large. He also recorded the color of the water. What is the independant variable? , Type of metallic wrapping strip

In chemistry class

Allen determined the effectiveness of various metals in releasing hydrogen gas from hydrochloric acid. Several weeks later, Allen read that a utilities company was burying lead next to iron pipes to prevent rusting. Allen hypothesized that less rusting would occur with the more active metals. He placed the following into 4 seperate beakers of water: (a) 1 iron nail, (b) 1 iron nail wrapped with an aluminum strip, (c) 1 iron nail wrapped with a magnesium strip, and (d) 1 iron nail wrapped with a lead strip. He used the same amount of water, equal amounts (mass) of the metals, and the same type of iron nails. At the end of 5 days, he rated the amount of rusting as small, moderate, or large. He also recorded the color of the water. What was the dependant variable? , Amount of rust, color of water

In chemistry class

Allen determined the effectiveness of various metals in releasing hydrogen gas from hydrochloric acid. Several weeks later, Allen read that a utilities company was burying lead next to iron pipes to prevent rusting. Allen hypothesized that less rusting would occur with the more active metals. He placed the following into 4 seperate beakers of water: (a) 1 iron nail, (b) 1 iron nail wrapped with an aluminum strip, (c) 1 iron nail wrapped with a magnesium strip, and (d) 1 iron nail wrapped with a lead strip. He used the same amount of water, equal amounts (mass) of the metals, and the same type of iron nails. At the end of 5 days, he rated the amount of rusting as small, moderate, or large. He also recorded the color of the water. Which of the following is not a constant in this experiment? , Type of metallic wrapping strip

In chemistry class

Allen determined the effectiveness of various metals in releasing hydrogen gas from hydrochloric acid. Several weeks later, Allen read that a utilities company was burying lead next to iron pipes to prevent rusting. Allen hypothesized that less rusting would occur with the more active metals. He placed the following into 4 seperate beakers of water: (a) 1 iron nail, (b) 1 iron nail wrapped with an aluminum strip, (c) 1 iron nail wrapped with a magnesium strip, and (d) 1 iron nail wrapped with a lead strip. He used the same amount of water, equal amounts (mass) of the metals, and the same type of iron nails. At the end of 5 days, he rated the amount of rusting as small, moderate, or large. He also recorded the color of the water. Which of the following would be the most appropriate title for the experiment? , The Effectiveness of Various Metals on Preventing the Rusting of Iron

Which of the following sets of key terms would be used to locate relevant articles for a student doing research on protein synthesis?

Amino acids, transcription, mRNA

Which of the following is NOT a curdling agent used to make cheese?

Amylase

What is the best source of information used in scientific research?

An article published in a peer-reviewed science journal.

An example of an applied science is

Animal science

Researchers who conduct ___________ seek to resolve a specific questions with the results being used immediately to identify solutions.

Applied Research

The horizontal or vertical line found at the bottom and a left side of a graph.

Axis

Which of the following should not be included in the conclusion of a scientific paper?

Background on the topic

A pictorial display of a set of data using bars to indicate the value.

Bar graph

Researchers who conduct ________ attempt to answer scientific questions without having an immediate use for the answer.

Basic Research

A statistical error that occurs when samples are drawn so that all members of the population do not have an equal chance of being included

Bias

Where should someone dispose of contaminated plastic ware?

Biohazard bag

A biology class wanted to develop a research project to predict the effects of a new highway on wildflower species found in the Piedmont region of Virginia. The class could best conduct such a study by sampling flowers found in the highway construction area —

Both before and after construction is completed

An example of a basic science is

Chemistry

Which step of the scientific method includes observing what takes place and recording what you measure or observe?

Collect the Data

Any factor that is not allowed to change.

Constant

A group or sample that is used as a standard for comparison.

Control

The part of an experiment that serves as a standard of comparison.

Control

The best term to describe the group in an experiment that is normal or unaffected by the researcher is...

Control group

Which sentence best states the importance of using control groups?

Control groups allow for comparison between subjects receiving a treatment and subjects receiving no treatment

Which of the following sets of key terms would be used to locate relevant articles for a student doing research on DNA replication?

DNA polymerase, deoxyribonucleotides, ligase

In 1869

DNA was discovered within the nuclei of cells. By the 1940s, scientists knew that chromosomes were made of both DNA and protein but did not know which was the genetic material of cells. In the 1950s, scientists demonstrated that DNA is the material responsible for heredity. In 1953, using information collected by other scientists, an American biologist and an English physicist built a three-dimensional model of DNA. These discoveries best illustrate the importance of — , Collaborative efforts among scientists

The bits of information gathered in an experiment.

Data

Which section of the scientific report contains tables and graphs?

Data

The factor in an experiment that responds to the purposefully changed factor.

Dependant variable

The term best used to describe the variable that changes as a result of the experiment is...

Dependant variable

Which step of the scientific method includes developing a plan for carrying out the project?

Design the experiment

Which of the following would be considered basic research?

Determining the structure of an atom

Which of these words would you NOT associate with the scientific method?

Disorganized

Alice needed to design a science project. She decided that she wanted to focus her project on how an earthworm's behavior helps it survive. Alice wrote down four ideas about earthworm behavior that she wanted to test. Which idea can be tested experimentally?

Earthworms will move away from direct light sources.

Which of the following is NOT an aspect of setting up a legal scientific lab book?

Editing using white out

The term to best describe the group changed by the researcher is...

Experimental Group

An independent variable is a factor that changes because of procedures conducted on the dependent variable.

FALSE

Which step in the scientific method includes developing a statement to be proven or disproven?

Form a hypothesis

Which of the following should be worn when working with chemicals?

Gloves

Which piece of Equipment should be put on without contaminating the outer surface?

Gloves

A pictorial display of a set of data .

Graph

The person providing the foundation for scientific study of heredity was _________.

Gregor Johann Mendel

A student wanted to look at plant growth in five different soil samples. He planted the same type of seeds in identical containers and left them together in full sunlight. He gave each plant the same amount of water and charted the growth of each plant stem. What is the dependant variable in this experiment?

Growth

Which question cannot be answered scientifically because the quantity cannot actually be measured?

How happy is a chimp when it finds it's favorite food?

A statement of possible relationship between the independent and dependent variables.

Hypothesis

The best term to describe a proposal intended to explain certain facts or observations is..

Hypothesis

What is a statement that proposes a cause-and-effect relationship between two variables?

Hypothesis

Which step of the scientific method encompasses deciding specifically what is it you wish to find out?

Identify the Problem

Which hypothesis is most correct?

If the amount of fertilizer is increased, then the plants will grow faster as measured by plant height.

Evaluate the following hypothesis: If hand sanitizer is effective then it will inhibit bacterial growth.

Incorrect: Missing how the results will be measured.

The factor in an experiment that is changed on purpose.

Independent variable

The term best used to describe the variable changed by the researcher is

Independent variable

Which domain of biotechnology does fermented foods and beverages fall under?

Industrial and Environmental Biotechnology

A paragraph at the beginning of a report that states the reason why the experiment was done.

Introduction

The idea behind a(an) _____________ is to see what happen if...

Investigation

Which of the following is most useful for protecting a student's skin from harm during an experiment?

Latex gloves

Which biosafety level characterizes most high school laboratories?

Level 1

Which biosafety level would be used to characterize a facility that contains the small pox virus?

Level 4

Which section of the scientific report contains a list of supplies needed?

Materials and Methods

Data collected using a measurement instrument and a standard scale.

Measurements

This is the middle point of a set of numbers going from the least to the greatest.

Median

Which domain of biotechnology does the production of insulin fall under?

Medical/Pharmaceutical Biotechnology

The device that produces magnified images of structures that is too small to see with the unaided eye.

Microscope

The number that occurs the most in a set of numbers is called ___.

Mode

"Given below are the daily high temperatures for one winter week in Albany

New York. What is the mode of these temperatures?

Which of the following best explains why a student researching genetics should use the most recent textbooks available?

New discoveries frequently add to older knowledge in genetics

Which of the following is a safe practice when working with electricity?

None of the answers are correct

Which of the following is a safe practice when working with molds or microorganisms?

None of the answers are correct

Which of these would be called results?

Number of fruit flies

"

Observation

For what to the initials PPE stand?

Personal Protective Wear

Which of these is not a step of the scientific method?

Plagiary

Which of the following is the correct distinction between pluripotent and totipotent cells?

Pluripotent give rise to many but not all cell types and totipotent give rise to all.

What is the correct order of the components of a lab report?

Problem/question, hypothesis, material, procedures, data/observations, analysis, conclusion

A professor of molecular biology has completed an experiment on mutations. The results indicate that the current understanding of how mutations occur is incomplete. Which is the most appropriate way to share the results of this experiment?

Publish the results in a scientific journal

"

Qualitatitive

$7.50

$9.25, $8.75, $9.50, $7.25, $8.50" , 2.25

Which of the following is a qualitative variable?

Quality

Which of the following is not a quantitative variable?

Quality

The difference between the minimum and the maximum observation in the data is called the....

Range

Which of the following should not be included in the results section of a scientific paper.

Reason for conducting the experiment

Two plant species found in a dry region of the western United States exhibit vastly different abilities to survive. Species A has very slow stem growth and few leaves but is very abundant. Species B has rapid stem growth and many leaves but is very rare. Which hypothesis is most likely supported by this information?

Reduced stem growth may give species A an advantage over species B

The number of times that a level of the independent variable is tested in an experiment.

Repeated trials

Used to reduce the possibility of chance errors.

Repeated trials

Which step of the scientific method encompasses reading up on and becoming informed about the topic?

Review of literature

A series of equal intervals and values placed on each axis of a graph.

Scale

Why is it important to report an experiment's procedures and results accurately?

So others can repeat the experiment to reduce the chance of bias

A student wanted to look at plant growth in five different soil samples. He planted the same type of seeds in identical containers and left them together in full sunlight. He gave each plant the same amount of water and charted the growth of each plant stem. What is the independent variable in this experiment?

Soil

Which of the following should be worn when working with chemicals?

Splash proof goggles

A number used to describe or analyze a set of data.

Statistic

A control group is used as a comparison to the group where things (variables) are changing.

TRUE

The scientific method was developed to help scientists organize the process of solving problems.

TRUE

Which of the following methods would provide the most accurate information for students collecting data about local attitudes concerning the use of alternative fuels for automobiles?

Take an opinion poll of drivers

___________ is defined as the application of science to solve a problem.

Technology

A hypothesis must be:

Testable

What is the controversy surrounding the using of human stem cells?

That using embryonic stem cells is potentially destroying a life.

Larry believes that mice exposed to microwaves will become extra strong . He decides to perform this experiment by placing 10 mice in a microwave for 10 seconds. He compared these 10 mice to another 10 mice that had not been exposed. His test consisted of a heavy block of wood that blocked the mouse food. He found 5 out of the 10 microwaved mice were able to push the block away. 8 out of the 10 non-microwaved mice were able to do the same. Identify the dependant variable.

The ability to move the wood block

A biology class of 24 students decides to measure the height of each student and then calculate the average height for the class. Which of these is a possible source of error in this activity?

The accuracy of making and recording measurements

Fred notices that his shower is covered in a strange green slime. His friend Joe tells him that coconut juice will get rid of the green slime. Fred decides to check this out by spraying half of the shower with coconut juice. He sprays the other half of the shower with water. After 3 days of "treatment" there is no change in the appearance of the green slime on either side of the shower. Identify the dependant variable.

The amount of green slime

Professional scientific journals would be most likely to reject an article for publication in which of the following situations?

The article lacks information about the methods used in the study.

Which of the following examples would NOT be criteria for an article being reliable?

The author by an intelligent individual.

Richard was observing black swallowtail butterflies in the field. Which one of these is an observation he made about a black swallowtail butterfly?

The black swallowtail laid its eggs on a prasley plant.

Fred notices that his shower is covered in a strange green slime. His friend Joe tells him that coconut juice will get rid of the green slime. Fred decides to check this out by spraying half of the shower with coconut juice. He sprays the other half of the shower with water. After 3 days of "treatment" there is no change in the appearance of the green slime on either side of the shower. What should Fred's conclusion be?

The coconut juice did not get rid of the green slime.

In which of the following situations is researcher bias most likely to be a factor that could compromise the validity of a scientific investigation?

The funds for the research come from sources that have a vested interest in the outcome of the research.

Larry believes that mice exposed to microwaves will become extra strong . He decides to perform this experiment by placing 10 mice in a microwave for 10 seconds. He compared these 10 mice to another 10 mice that had not been exposed. His test consisted of a heavy block of wood that blocked the mouse food. He found 5 out of the 10 microwaved mice were able to push the block away. 8 out of the 10 non-microwaved mice were able to do the same. Identify the experimental group.

The microwaved mice

Larry believes that mice exposed to microwaves will become extra strong . He decides to perform this experiment by placing 10 mice in a microwave for 10 seconds. He compared these 10 mice to another 10 mice that had not been exposed. His test consisted of a heavy block of wood that blocked the mouse food. He found 5 out of the 10 microwaved mice were able to push the block away. 8 out of the 10 non-microwaved mice were able to do the same. Identify the control group.

The non-microwaved mice

Larry believes that mice exposed to microwaves will become extra strong . He decides to perform this experiment by placing 10 mice in a microwave for 10 seconds. He compared these 10 mice to another 10 mice that had not been exposed. His test consisted of a heavy block of wood that blocked the mouse food. He found 5 out of the 10 microwaved mice were able to push the block away. 8 out of the 10 non-microwaved mice were able to do the same. What should Larry's conclusion be.

The non-microwaved mice were stronger

Which factor is NOT a criteria to be examined when determining if a resource is relevant?

The number of authors involved in formulating the information.

Orchids were studied to determine if the amount of humidity affected the flowering of these plants. Which of these was the independent variable in this study?

The percentage of humidity

Which of the following is most important when judging the quality of a scientific theory?

The quality and reliability of data that supports the theory

Fred notices that his shower is covered in a strange green slime. His friend Joe tells him that coconut juice will get rid of the green slime. Fred decides to check this out by spraying half of the shower with coconut juice. He sprays the other half of the shower with water. After 3 days of "treatment" there is no change in the appearance of the green slime on either side of the shower. Identify the control group.

The side of the shower sprayed with water

Fred notices that his shower is covered in a strange green slime. His friend Joe tells him that coconut juice will get rid of the green slime. Fred decides to check this out by spraying half of the shower with coconut juice. He sprays the other half of the shower with water. After 3 days of "treatment" there is no change in the appearance of the green slime on either side of the shower. Identify the independant variable.

The solution sprayed on the shower

A toy manufacturer is investigationg why its new toy trucks are breaking down much more quickly than its older toy trucks. What would be the most useful information for the toy company to aquire?

The strength of the materials used in the new toy trucks

Which of the following statements about scientific theories is not correct?

Theories are incomplete, temporary ideas.

Things or factors that can be assigned to take on different values in an experiment.

Variables

"Customers are a nursery are willing to pay the following prices listed below for a 5 gallon shrub. What is the range of these prices?

...

"Find the mode of the following numbers.

...

"Find the range of these distances of tagged bears from the site of their original capture:

...

"Find the range of these maze times given in seconds:

...

"Find the range of these trial scores:

...

"Fish hatcheries are an enclosed environment used to farm a large number of fish. A fish biologist wondered if fish raised in hatcheries would be able to survive in a wild environment. The

...

"Joe tested the effects of fertilizer on plant growth. What is the mean height (cm)for the 6 control plants listed below?

...

"José traveled for 2 hours at a rate of 70 kilometers per hour and for 5 hours at a rate of 60 kilometers per hour. What was his average speed for the 7-hour period?

...

"Observations that describe something using words is called ____________ observations.

...

"Roads are slippery when there is snow on the roads. This is an example of

...

"Ten earthquakes were measured using the Richter scale and their magnitudes are listed below. Which of the following statements is true?

...

"The average annual wind speed for the 5 windiest cities in the U.S. is given below in miles per hour. What is the mean of these annual wind speeds?

...

"The following is the number of number of inches of rain on 10 different days. What is the mode?

...

"The manager of a nursery recorded the number of orange trees sold per day in 2 weeks (below). Which of the following statements is true?

...

"The number of tornadoes that have occurred in the U.S. in the last 8 years is listed below. Find the median.

...

"The speeds of 12 turtles are recorded below (in cm per minute). Find the mode.

...

"The test scores of 9 study participants are listed below. Find the mode.

...

"What do you do to test a hypothesis?

...

"What is the median age of the 7 children whose ages are listed below?

...

-21

0, +2, -15, 0, +5, -18, +7, 0, -32, +21" , The mode is 0.

What is the scientific notation for the following number: 1

000,000,000 , 1.0 x 109

The mean of a set of numbers is 108. The sum of the numbers is 2

052. How many numbers are in the set? , 19

Susan observed that different kinds and amounts of fossils were present in a cliff behind her house. She wondered if changes in fossil content occurred from the top to the bottom of the bank. She marked the bank at five positions: 5

10 ,15, 20, 25 m from the surface. She removed 1 bucket of soil from each of the positions and determined the kind and number of fossils in each sample. What is the dependant variable in this experiment? , Kind and number of fossils

Susan observed that different kinds and amounts of fossils were present in a cliff behind her house. She wondered if changes in fossil content occurred from the top to the bottom of the bank. She marked the bank at five positions: 5

10 ,15, 20, 25 m from the surface. She removed 1 bucket of soil from each of the positions and determined the kind and number of fossils in each sample. What is the independant variable in this experiment? , Depth of sample from suface

Susan observed that different kinds and amounts of fossils were present in a cliff behind her house. She wondered if changes in fossil content occurred from the top to the bottom of the bank. She marked the bank at five positions: 5

10 ,15, 20, 25 m from the surface. She removed 1 bucket of soil from each of the positions and determined the kind and number of fossils in each sample. What type of data was Susan collecting? , Qualitative and Quantitative

Susan observed that different kinds and amounts of fossils were present in a cliff behind her house. She wondered if changes in fossil content occurred from the top to the bottom of the bank. She marked the bank at five positions: 5

10 ,15, 20, 25 m from the surface. She removed 1 bucket of soil from each of the positions and determined the kind and number of fossils in each sample. Which of the following is a constant in this experiment? , Amount of soil

Susan observed that different kinds and amounts of fossils were present in a cliff behind her house. She wondered if changes in fossil content occurred from the top to the bottom of the bank. She marked the bank at five positions: 5

10 ,15, 20, 25 m from the surface. She removed 1 bucket of soil from each of the positions and determined the kind and number of fossils in each sample. Which of the following is the control in this experiment? , There is no control in this experiment?

Susan observed that different kinds and amounts of fossils were present in a cliff behind her house. She wondered if changes in fossil content occurred from the top to the bottom of the bank. She marked the bank at five positions: 5

10 ,15, 20, 25 m from the surface. She removed 1 bucket of soil from each of the positions and determined the kind and number of fossils in each sample. Which of the following would be the most appropriate title for Susan's experiment? , The Effect of Bank Position on Fossils

Susan observed that different kinds and amounts of fossils were present in a cliff behind her house. She wondered if changes in fossil content occurred from the top to the bottom of the bank. She marked the bank at five positions: 5

10 ,15, 20, 25 m from the surface. She removed 1 bucket of soil from each of the positions and determined the kind and number of fossils in each sample. Which of the following would not be an appropriate hypothesis for this experiment? , Fossil's found in Susan's yard are from prehistoric times.

"In a crash test

11 cars were tested to determine what impact speed was required to obtain minimal bumper damage. Find the mode of the speeds given in miles per hour below.

8

11, 9, 14, 9, 15, 18, 6, 9, 10 " , 9

What is the range of this set? 10

12, 14, 16 , 6

132

121, 119, 116, 130, 121, 131, 117, 119, 135, 121, 129, 119, 134 " , The modes are 119 and 121.

18

13, 0, 16, 3, 15, 0, 11, 14, 0, 12" , 0

15.4

14.0, 13.5, 13.1, 12.9" , 13.78

13.2

14.5, 12.9, 13.9, 15.6, 14.1, 12.3

10 km

15 km, 12 km, 14 km, 8 km, 16 km" , 8 km

Bobbie wanted to find out if diluting vinegar would change the speed at which it would react with Grey's Baking Soda. She used identical glasses. Into each of 3 glasses she put 2 g of baking soda and 25 mL pure vinegar; in each of 3 more glasses she put 2 g of baking soda

15 mL vinegar and 10 mL water; into each of 3 more glasses she put 2 g of baking soda, 10 mL vinegar, and 15 mL water. In each case she measured the time it took the vinegar and the baking soda to finish reacting or to stop producing carbon dioxide gas bubbles. How could this experiment be improved? , All answers are correct

Bobbie wanted to find out if diluting vinegar would change the speed at which it would react with Grey's Baking Soda. She used identical glasses. Into each of 3 glasses she put 2 g of baking soda and 25 mL pure vinegar; in each of 3 more glasses she put 2 g of baking soda

15 mL vinegar and 10 mL water; into each of 3 more glasses she put 2 g of baking soda, 10 mL vinegar, and 15 mL water. In each case she measured the time it took the vinegar and the baking soda to finish reacting or to stop producing carbon dioxide gas bubbles. What is a constant in this experiment? , Amount of baking soda

Bobbie wanted to find out if diluting vinegar would change the speed at which it would react with Grey's Baking Soda. She used identical glasses. Into each of 3 glasses she put 2 g of baking soda and 25 mL pure vinegar; in each of 3 more glasses she put 2 g of baking soda

15 mL vinegar and 10 mL water; into each of 3 more glasses she put 2 g of baking soda, 10 mL vinegar, and 15 mL water. In each case she measured the time it took the vinegar and the baking soda to finish reacting or to stop producing carbon dioxide gas bubbles. What is the control? , The glass with pure vinegar

Bobbie wanted to find out if diluting vinegar would change the speed at which it would react with Grey's Baking Soda. She used identical glasses. Into each of 3 glasses she put 2 g of baking soda and 25 mL pure vinegar; in each of 3 more glasses she put 2 g of baking soda

15 mL vinegar and 10 mL water; into each of 3 more glasses she put 2 g of baking soda, 10 mL vinegar, and 15 mL water. In each case she measured the time it took the vinegar and the baking soda to finish reacting or to stop producing carbon dioxide gas bubbles. What is the dependent variable? , Time to finish reacting

Larry believes that mice exposed to microwaves will become extra strong . He decides to perform this experiment by placing 10 mice in a microwave for 10 seconds. He compared these 10 mice to another 10 mice that had not been exposed. His test consisted of a heavy block of wood that blocked the mouse food. He found 5 out of the 10 microwaved mice were able to push the block away. 8 out of the 10 non-microwaved mice were able to do the same. Identify the independant variable.

Whether or not the mice were microwaved

Bobbie wanted to find out if diluting vinegar would change the speed at which it would react with Grey's Baking Soda. She used identical glasses. Into each of 3 glasses she put 2 g of baking soda and 25 mL pure vinegar; in each of 3 more glasses she put 2 g of baking soda

15 mL vinegar and 10 mL water; into each of 3 more glasses she put 2 g of baking soda, 10 mL vinegar, and 15 mL water. In each case she measured the time it took the vinegar and the baking soda to finish reacting or to stop producing carbon dioxide gas bubbles. What is the independent variable? , Concentration of vinegar

Bobbie wanted to find out if diluting vinegar would change the speed at which it would react with Grey's Baking Soda. She used identical glasses. Into each of 3 glasses she put 2 g of baking soda and 25 mL pure vinegar; in each of 3 more glasses she put 2 g of baking soda

15 mL vinegar and 10 mL water; into each of 3 more glasses she put 2 g of baking soda, 10 mL vinegar, and 15 mL water. In each case she measured the time it took the vinegar and the baking soda to finish reacting or to stop producing carbon dioxide gas bubbles. Which of the following could be a hypothesis for this experiment? , All answers are correct

"

18 and 24

Find the mode for the values: 15

18, 18, 23, 37, 29, 32, 32, 33, 37, 37, 54 , 37

What is the mode of this set? 6

2, 4, 5, 7, 3, 8, 2, 9 , 2

"

3.3

What is the range of this set? 2

4, 6 , 4

What is the median of this set? 2

4,6 , 4

39

42, 34, 37, 39, 44, 41" , 39

35

43, 39, 46, 43, 47, 38, 51, 43, 38, 40, 45" , 43

The horizontal line found at the bottom on a graph.

X Axis

Where should the independent variable be on the graph?

X axis

The vertical line found at the left side of a graph.

Y Axis

Jackie read that Aloe vera promoted healing of burned tissue. She decided to investigate the effect of varying amounts of Aloe vera on the regeneration of flatworms. She bisected the flatworms to obtain 10 parts (5 heads

5 tails) for each experimental group. She applied concentrations of 0%, 10%, 20%, and 30% Aloe vera to the groups. Fifteen mL of Aloe vera solutions were applied. All flatworms were maintained in a growth chamber with identical food, temperature, and humidity. On day 15, Jackie observed the regeneration of the flatworm parts and categorized development as full, partial, or none. What is the dependant variable? , Regeneration of parts

Jackie read that Aloe vera promoted healing of burned tissue. She decided to investigate the effect of varying amounts of Aloe vera on the regeneration of flatworms. She bisected the flatworms to obtain 10 parts (5 heads

5 tails) for each experimental group. She applied concentrations of 0%, 10%, 20%, and 30% Aloe vera to the groups. Fifteen mL of Aloe vera solutions were applied. All flatworms were maintained in a growth chamber with identical food, temperature, and humidity. On day 15, Jackie observed the regeneration of the flatworm parts and categorized development as full, partial, or none. What is the independant variable? , Concentration of Aloe vera

Jackie read that Aloe vera promoted healing of burned tissue. She decided to investigate the effect of varying amounts of Aloe vera on the regeneration of flatworms. She bisected the flatworms to obtain 10 parts (5 heads

5 tails) for each experimental group. She applied concentrations of 0%, 10%, 20%, and 30% Aloe vera to the groups. Fifteen mL of Aloe vera solutions were applied. All flatworms were maintained in a growth chamber with identical food, temperature, and humidity. On day 15, Jackie observed the regeneration of the flatworm parts and categorized development as full, partial, or none. What type of data was Jackie collecting? , Qualitative

Jackie read that Aloe vera promoted healing of burned tissue. She decided to investigate the effect of varying amounts of Aloe vera on the regeneration of flatworms. She bisected the flatworms to obtain 10 parts (5 heads

5 tails) for each experimental group. She applied concentrations of 0%, 10%, 20%, and 30% Aloe vera to the groups. Fifteen mL of Aloe vera solutions were applied. All flatworms were maintained in a growth chamber with identical food, temperature, and humidity. On day 15, Jackie observed the regeneration of the flatworm parts and categorized development as full, partial, or none. Which of the following is a constant in this experiment? , Amount of solution

Jackie read that Aloe vera promoted healing of burned tissue. She decided to investigate the effect of varying amounts of Aloe vera on the regeneration of flatworms. She bisected the flatworms to obtain 10 parts (5 heads

5 tails) for each experimental group. She applied concentrations of 0%, 10%, 20%, and 30% Aloe vera to the groups. Fifteen mL of Aloe vera solutions were applied. All flatworms were maintained in a growth chamber with identical food, temperature, and humidity. On day 15, Jackie observed the regeneration of the flatworm parts and categorized development as full, partial, or none. Which of the following is the most appropriate title for Jackie's experiment? , The Effects of Various Concentrations of Aloe Vera on the Regeneration of Flatworms

Jackie read that Aloe vera promoted healing of burned tissue. She decided to investigate the effect of varying amounts of Aloe vera on the regeneration of flatworms. She bisected the flatworms to obtain 10 parts (5 heads

5 tails) for each experimental group. She applied concentrations of 0%, 10%, 20%, and 30% Aloe vera to the groups. Fifteen mL of Aloe vera solutions were applied. All flatworms were maintained in a growth chamber with identical food, temperature, and humidity. On day 15, Jackie observed the regeneration of the flatworm parts and categorized development as full, partial, or none. Which was the control for this experiment? , 0% Aloe vera

What is the mode in this set? 3

5, 4, 2, 5, 3, 5, 2, 5 , 5

Find the range of the values: 2

5, 6, 6, 8, 10, 12, 17 , 15

Calculate the mean for the values: 2

5, 6, 6, 8, 10, 12, 17 , 8.25

7.0

6.2, 7.7, 8.0, 6.4, 7.2, 5.4, 6.6, 7.5, 5.9 " , There is no mode.

"

62 6/7

684

764, 1133, 656, 702, 1303, 856, 1132" , 810

Find the mode for the values: 68

77, 79, 84, 85, 84, 90, 91, 93, 100 , 84

93

79, 83, 89, 90, 71, 85" , 22

7.3 s

8.4 s, 8.0 s, 7.5 s, 9.4 s, 8.7 s, 9.1 s" , 2.1

"

9

10

9, 12, 11, 8, 15, 9, 7, 8, 6, 12, 10

82

92, 75 , 91, 92, 89, 95, 100, 86" , 92

89

93, 87, 86, 85, 94" , 89

What should be added to a microbial plate prior to disposal?

95% ethanol

Which of the following would be considered a good resource for a literature review?

A textbook

Which of the following would be considered applied research?

Affect of feed additives on livestock growth

Which domain of biotechnology does transgenic plants and animals fall under?

Agricultural Biotechnology

The best term to descrie the application of scientific principles and new technologies to agriculture is...

Agriscience

One relationship of agriscience with many other sciences is that

Agriscience is the application of many other sciences

"Eleven daily temperatures for Juneau

Alaska are listed below, in degrees Fahrenheit. Which of the following statements is true?

Alice needed to design a science project. She decided that she wanted to focus her project on how an earthworm's behavior helps it survive. Alice conducted a controlled experiment and tested a single variable. She used one earthworm for her experiment and conducted the experiment once. She typed her conclusion and glued it to her science project poster. The next day

Alice was surprised to find out that she received a low grade on her conclusion. What could Alice do differently to increase her grade on her conclusion? , collect more data by repeating the experiment or using more worms

Alice needed to design a science project. She decided that she wanted to focus her project on how an earthworm's behavior helps it survive. Before designing her experiment

Alice went to the library to learn more about earthworms. Which of the following resources would provide the best information for her to use? , non-fiction books and science websites on earthworm adaptations

Which of the following precautions should be taken when working with animals and humans?

All answers are correct

Which of the following precautions should be taken when working with chemicals?

All answers are correct

Which of the following precautions should be taken when working with electricity?

All answers are correct

Which of the following precautions should be taken when working with mold and microorganisms?

All answers are correct

Which of the following should be included in the conclusion of a scientific paper?

All answers are correct

Which of the following should be included in the introduction of a scientific paper?

All answers are correct

Which of the following should be included in the results section of a scientific report?

All answers are correct

Fred notices that his shower is covered in a strange green slime. His friend Joe tells him that coconut juice will get rid of the green slime. Fred decides to check this out by spraying half of the shower with coconut juice. He sprays the other half of the shower with water. After 3 days of "treatment" there is no change in the appearance of the green slime on either side of the shower. How could Fred improve this experiment?

All could improve the experiment

Which of the following should be considered when designing an experiment?

All of the answers are correct

The career and job outlook in agriscience is..

All stated answers are correct

In chemistry class

Allen determined the effectiveness of various metals in releasing hydrogen gas from hydrochloric acid. Several weeks later, Allen read that a utilities company was burying lead next to iron pipes to prevent rusting. Allen hypothesized that less rusting would occur with the more active metals. He placed the following into 4 seperate beakers of water: (a) 1 iron nail, (b) 1 iron nail wrapped with an aluminum strip, (c) 1 iron nail wrapped with a magnesium strip, and (d) 1 iron nail wrapped with a lead strip. He used the same amount of water, equal amounts (mass) of the metals, and the same type of iron nails. At the end of 5 days, he rated the amount of rusting as small, moderate, or large. He also recorded the color of the water. Is the dependant variable data Allen is gathering quantitative or qualitative? , Qualitative

In chemistry class

Allen determined the effectiveness of various metals in releasing hydrogen gas from hydrochloric acid. Several weeks later, Allen read that a utilities company was burying lead next to iron pipes to prevent rusting. Allen hypothesized that less rusting would occur with the more active metals. He placed the following into 4 seperate beakers of water: (a) 1 iron nail, (b) 1 iron nail wrapped with an aluminum strip, (c) 1 iron nail wrapped with a magnesium strip, and (d) 1 iron nail wrapped with a lead strip. He used the same amount of water, equal amounts (mass) of the metals, and the same type of iron nails. At the end of 5 days, he rated the amount of rusting as small, moderate, or large. He also recorded the color of the water. What are the constants in this experiment? , All answers are correct

Motion

a basic proposal that brings business before the assembly

Concave bevel

a bevel which is hollowed or curved inward

Convex bevel

a bevel which is raised or curved outward

Shop

a building in which mechanical work is performed

Water

a colorless, odorless liquid essential for all forms of life

Working pressure

a continuous regulated pressure supplied to the oxyacetylene torch assembly

Rabbet

a cut or groove at the end of a board made to receive another board and form a joint

Simple machine

a device or machine that has only one or two parts such as a wheel or axle

Blade balance

a device used to balance a lawn mower blade to prevent excess vibration during operation

Switch

a device used to stop the flow of electrical current; used in controlling devices

Portland cement

a dry powder made by burning limestone and clay followed by grinding and mixing

Neutral flame

a flame with a balance of oxygen and acetylene

Oxidizing flame

a flame with a balance of oxygen and acetylene

Caburizing flame

a flame with an excess of acetylene in the mixture

Career Development Event

a hands-on team competition designed for FFA members to develop career-related skills

Common nail

a kind of nail with a flat head that is used in general construction

Compound machine

a machine, often large that is comprised of many simple machines

Fertilizer

a material that supplies nutrients to plants

Issue

a matter on which differences of opinion exist

Surveying rod

a measuring device to determine vertical distances in making a land survey or contour map

Form

a metal or wooden structure that contains concrete until it happens

Electrode

a metal welding rod coated with flux used in electric arc welding

Parliamentary procedure

a method of conducting meetings in an orderly manner

Concrete

a mixture of stone aggregates, sand and portland cement and water that hardens as it dries

Solder

a mixture of tin and lead used to faster together sheet metal and electrical connections

Alloy

a mixture or two or more materials

Circular saw

a motor driven power hand saw with a round blade

Tactor

a moving vehicle, usually with wheels or tacks with an engine that provides power to other equipment

FFA

a national organization for students enrolled in agriculture education that promotes leadership, growth and career success

Fitting

a part used to connect pieces of pipe to other pieces of pipe

Drawing

a picture or likeness made with pencil, pen, chalk, crayon or other instruments

Double inclined plane

a plane made by two bevels creating a point similar to that of an axe

Annual

a plant that completes its life cycle in one year or less

Biennial

a plant that needs two years to complete its life cycle

Monocot

a plant with one seed leaf

Dicot

a plant with two seed leaves

Prennial

a plants that needs more than two years to complete its life cycle

Benchmark

a point of predetermined elevation

Backsight reading

a reading taken on a point of known elevation

Foresight reading

a reading taken on a point of unknown elevation

Renewable resource

a resource provided by nature that can replace itself

Nonrenewable resource

a resource provided by nature that cannot replace itself

Sketch

a rough drawing of an idea, object or procedure

Kickback

a safety hazard that results when a saw blade binds in the material being cut resulting in uncontrollable throwing of the material or saw

Rip hand saw

a saw with lager teeth for cutting with the grain of wood

Crosscut hand saw

a saw with small teeth for cutting across the grain of wood

Hidden line

a series of dashes that indicate unseen edges

Hollow ground

a single inclined plane which is concave ground

Finishing nail

a slender nail with a small head used for interior trim work

Ignition

a spark that ignites the fuel and air mixture

Dado

a square or rectangular groove in the face of a board

Extemporaneous speech

a type of speech in which the speaker prepares ideas but does not memorize exact words

Prepared speech

a type of speech in which the speaker prepares the speech completely beforehand

Board foot

a wood measurement of 144 cubic inches

Operator's manual

a written description of how to safely use and maintain equipment provided by the manufacturer

In the early 1950s

a young researcher named Rosalind Franklin used X-ray diffraction imaging to produce a photograph of the DNA molecule. Two other researchers, James Watson and Francis Crick, used this information to develop a three-dimensional model of the DNA molecule. Their model of the DNA molecule was rapidly accepted by the scientific community following publication of their results. To a great extent, the acceptance of their model of the DNA molecule was based on: , the use of data on the DNA molecule that was collected before their research was begun.

The best term to describe the application of scientific principles and new technologies to agriculture is ________.

agriscience

Agricultural industry

all of the activities in producing and marketing food, fiber and forestry products to consumers

Ultimately

all scientific knowledge comes from: , Experimentation and Observation

Placement

an SAE in which students are employed in an agriculture related field

Production

an SAE in which students learn to raise and manage crops and livestock

FEMA

an agency focused on responding to natural and other disasters

EPA

an agency of the Federal government focused on environmental quality

Circuit

an electrical source and wires connected to a light, heater or motor

Scale

an instrument with all the increments shortened according to proportion

Supervised Agriculture Experience

an opportunity for students to develop knowledge and skills in agriculture-related fields while in supervised settings

Which step of the scientific method includes making necessary calculations

and determining if the information allows you to accept or reject the hypothesis? , Draw conclusions

"Twelve mice were sent through a maze

and the times (in minutes) to complete it are listed below. Find the range of these times.

"A timed puzzle was completed by 7 participants

and their completion times are given below (in seconds). What is the range of completion times?

Masonry

anything made of brick, stone, tile or concrete units held in place by masonry cement

Height of instrument

back site plus elevation

Which section of the scientific report contains the statement of the problem

background, and objectives? , Introduction

Hunter was told that a certain itching powder was the newest

best thing on the market; it even claims to cause 50% longer lasting itches. Interested in this product, he buys the itching powder and compares it to his usual product. One test subject (A) is sprinkled with the original itching powder, and another test subject (B) was sprinkled with the experimental itching powder. Subject A reported having itches for 30 minutes. Subject B reported having itches for 45 minutes. How can this experiment be improved? , All answers are correct

Hunter was told that a certain itching powder was the newest

best thing on the market; it even claims to cause 50% longer lasting itches. Interested in this product, he buys the itching powder and compares it to his usual product. One test subject (A) is sprinkled with the original itching powder, and another test subject (B) was sprinkled with the experimental itching powder. Subject A reported having itches for 30 minutes. Subject B reported having itches for 45 minutes. Identify the control group. , The subject sprinkled with the original itching powder

Hunter was told that a certain itching powder was the newest

best thing on the market; it even claims to cause 50% longer lasting itches. Interested in this product, he buys the itching powder and compares it to his usual product. One test subject (A) is sprinkled with the original itching powder, and another test subject (B) was sprinkled with the experimental itching powder. Subject A reported having itches for 30 minutes. Subject B reported having itches for 45 minutes. Identify the dependant variable. , The length of time itchy

Hunter was told that a certain itching powder was the newest

best thing on the market; it even claims to cause 50% longer lasting itches. Interested in this product, he buys the itching powder and compares it to his usual product. One test subject (A) is sprinkled with the original itching powder, and another test subject (B) was sprinkled with the experimental itching powder. Subject A reported having itches for 30 minutes. Subject B reported having itches for 45 minutes. Identify the experimental group. , The subject sprinkled with the experimental itch powder

Hunter was told that a certain itching powder was the newest

best thing on the market; it even claims to cause 50% longer lasting itches. Interested in this product, he buys the itching powder and compares it to his usual product. One test subject (A) is sprinkled with the original itching powder, and another test subject (B) was sprinkled with the experimental itching powder. Subject A reported having itches for 30 minutes. Subject B reported having itches for 45 minutes. Identify the independant variable. , The type of powder used

Hunter was told that a certain itching powder was the newest

best thing on the market; it even claims to cause 50% longer lasting itches. Interested in this product, he buys the itching powder and compares it to his usual product. One test subject (A) is sprinkled with the original itching powder, and another test subject (B) was sprinkled with the experimental itching powder. Subject A reported having itches for 30 minutes. Subject B reported having itches for 45 minutes. What should Hunter's conclusion be? , The experimental itching power makes subject itch longer.

Brazing

bonding with metals and alloys that melt above 840 degrees F when capillary action occurs

The study and manipulation of living things or their component molecules

cells, tissues, or organs. , Biotechnology

Data that are descriptions of qualities such as shape

color, and gender. , Observation

Twist drill

common drill bit used for making round holes in wood and metal

The control and preservation of natural resources for present and future use

conservation

Bead

continuous and uniform line of filler metal

Direct current

current that flows in one direction continuously

Alternating current

current that reverses itself sixty time per second

Agricultural mechanics

design, construction, repair and maintenance of tractors, machinery and other structures used in the agricultural industry

Intake stroke

engine process of taking fuel and air into the combustion chamber

Which of the following is a testable hypothesis?

every member of the track team who uses the new athletic shoes will be able to beat his or her own best record.

Agricultural structures

facilities used in the agricultural industry

Which of the following strategies would result in a biased interpretation of the results of a scientific investigation?

failing to include experimental data that would cause other scientists in the field to call into question the conclusions of the research

Electricity

flow of electrons in a conductor

Horsepower

force needed to lift 550 pounds one foot in one second rating system of engine power displacement

Which domain of biotechnology does DNA identification and DNA fingerprinting

forensics fall under? , Diagnostic Research Biotechnology

The production and management of trees for lumber and other related commodities

forestry

Welding

fusing two pieces of material using a heat process most commonly used with metal and plastics

Acetylene

gas fuel used in acetylene welding

Oxygen

gas in the atmosphere that supports combustion used in some kinds of welding to promote burning of a hot flame

A section of the report of an experiment that includes data tables

graphs, and sentences that summarize any trends found in the data. , Results

biologist thought that fish raised in hatcheries lost their fear of predators. To test the idea

he placed 15 young hatchery trout and 15 wild trout of the same age and species into two separate but identical tanks. He divided each tank in half by inserting a clear divider made out of plexiglass. The biologist placed the trout on one side of the plexiglass divider and a large predatory fish - the northern pike - on the other side of the plexiglass. He then recorded the amount of time it took the young trout to move to the back of the tank away from the northern pike. The biologist found that the hatchery fish moved away much slower than the wild fish. Prior to starting the experiment, the biologist needed to fill out paperwork explaining procedures for using and caring for the fish in his experiment. What is the purpose for this paperwork?" , to ensure that his research animals will be treated humanely

biologist thought that fish raised in hatcheries lost their fear of predators. To test the idea

he placed 15 young hatchery trout and 15 wild trout of the same age and species into two separate but identical tanks. He divided each tank in half by inserting a clear divider made out of plexiglass. The biologist placed the trout on one side of the plexiglass divider and a large predatory fish - the northern pike - on the other side of the plexiglass. He then recorded the amount of time it took the young trout to move to the back of the tank away from the northern pike. The biologist found that the hatchery fish moved away much slower than the wild fish. Which of the following statements is the basis for the hypothesis that was tested?" , "The biologist thought that fish raised in hatcheries lost their fear of predators."

Harvester ants often strip a bush of all of its leaves. Some people believe this helps the plant grow thicker

healthier stems. In an experiment, a student stripped off all the leaves from a set of plants. In a second set of identical plants, the student allowed ants to strip off the plants' leaves. In order to improve this experimental design, it is most important to add a set of plants — , With its leaves left intact

Borderline

heavy solid black line drawn close to the outer edge of paper used to draw plans

A brief summary of the research paper or report. It includes a brief description of the problem

hypothesis, procedures, results, and conclusions. , Abstract

Agricultural equipment

implements used in the agricultural industry to produce plants, animals and other products

A sequence of precisley stated steps that describe how an experiment was done

including the materials and equipment used. , Procedure

A biologist has completed an investigation of the ecological effects of planting large areas with crops that have been genetically altered to prevent pest damage. In order for other scientists to properly evaluate this research

it is most important that the biologist publish which of the following types of information related to the study? , the specific methodology used to obtain the study's results

A scientist announces that she has discovered a strain of mice that does not develop cancer even after repeated injections with chemical agents known to cause cancer in normal mice. To demonstrate to the scientific community that the discovery is legitimate

it is most important that the scientist: , provide verifiable evidence to support her claim.

Bio means ________.

life

Ground

making an electrical connection between a piece of electrical equipment and the earth

Flux

material on an arc welding rod that cleans the metal aids in proper cooling and produces a gas shield for the weld

Inside diameter

measurement used to size a pipe based on a measurement taken from the interior walls of the pipe

Outside diameter

measurement used to size pipe based on a measurement taken from the exterior walls of the pipe