Chapter 1- Science in Our World

How could a hypothesis that is proven to be false lead to new scientific investigations?

Because if that is false, then that might make something else true

what problems could occur if scientists did not communicate the results of their investigation?

Because they might think they are right, when they might be wrong

Scientists throughout the world use the _____ measurement.

SI system

What must a scientist always be sure of, when testing a hypothesis?

That the records of observations are accurate

what is a controlled experiment?

a test of only one factor at a time

what is the next step for scientists after they finish their tests?

analyze resutls

A measure of how much surface an object has is ___?

area

what is length x width?

area

What steps help scientists focus the purpose of an investigation?

asking a question

what is the first step of a scientific investigation?

asking a question

which of the following statements about the steps of scientific method is true? a. Steps must always be used in the same order b. steps are repeated sometimes c. all steps must be used d. the steps must support the hypothesis

b. Steps are repeated sometimes

When you answer questions by doing an activity that includes careful observation, you are using ___?

experimentation

Which of the following tools is used to observe very small objects?

microscope

The process of developing new technology is ____?

the engineering design process

what is the boiling point of F and C

F=212 C-100

Which of the following statements about the International System of Units is correct? a. it is never used by scientists b. it was invented in the 1960's c. it is used by only a few people d. it is based on the number of 10

d it is based on the number of 10

Engineering uses scientific knowledge to ______?

develop technologies

Searching the Internet for answers to science questions is called ___?

research

Knowledge gained by observing the natural world is called ____?

science

what is a spring scale used for?

to measure force

Something that helps you do a task is called a _____

tool

What kind of tool would you use after you have collected data?

tool for analyzing

A scientist who studies animals is _____?

zoologist

A pencil measures 14 cm long. How many millimeters long is it?

140 mn

Which statement about observations is true? a. they always involve seeing something? b. they must be made at the beginning of an investigation c. they must be made at the end of an investigation d. they can be made with any of the senses

D. they can be made with any of the senses

What is data?

Information gathered during an experiment

what is the scientific method?

It is a process that is used to find answers to questions about the world around us.

What is the distance between 2 points measured by ____?

Length meter (m)

What is the measure of the amount of matter in an object ? measured by ____?

Mass gram (g)

which of the following statements describes a limitation of models?

Models do not act exactly like the things that they model

Is there only one "scientific method?

NO, but they all begin with the identification of a problem or question to be answered.

How & why do engineers us models?

To help them see a physical sale of something they are unfamiliar with & help them be more familiar with it.

what problems could occur if the International System of Units were not used?

We could not understand each other answers or findings

what is the measure of how much surface an object has?

area

What is the measure of the number of square units needed to cover the faces or surfaces of a figure? measured by ___?

area square meters (m2)

EDP=

ask Imagine plan create improve

which of the following tools would you use to measure mass?

balance

The application of engineering to living things is ___?

bio engineering

___ is the application of engineering to living things?

bioengineering

A scientist who maps the surface of the Earth is _____?

cartographer

The evaluation of a prototype to make sure a new product is worth its benefit is _____?

cost-benefit analysis

a good way to investigate answers to the scientific questions is to?

do research, make observations and do experiments

A scientist who puts scientific knowledge to practical use is ____?

engineer

The process of creating technology ____?

engineering

A scientist who studies human interaction with the environment is ____?

environmental scientist

when you answer questions by doing an activity that includes careful observation, you are using ___?

expermination

Which of the following units is NOT an SI unit? meter foot liter degree Celsius

foot

After a scientist forms a hypothesis, the next step is to___?

gather data to test the hypothesis

when analyzing results, scientists sometimes arrange data in a _____?

graph

An explanation that is based on prior scientific research or observations and that can be tested is called a ____?

hypothesis

The scientific method always starts with ___ or ___ to be answered based on ____ of the world around us & provide an _____ method for an experiment..

identification of problem or question observations organized

The problem of making clothing that repels water is an example of ____?

identifying a need

Which of the following is a negative unintended consequence of the auto-mobile?

it causes traffic congestion

an example of adaptive bio engineering is ____?

lase eye surgery

Making the oceans cleaner is an example of how science can ____?

make surrounding healthier.

The amount of matter that makes us an object is ___? what tool is used?

mass (matter=mass) balance

Air pollution produced by cars is an example of ____?

negative unintended consequences of engineering

A statement made in an if-then format is called a ____?

prediction

A test model of a product is _____?

prototype

Searching the internet for answers to science questions is called ____?

research

Learning to predict tornadoes is an expample of how science can___?

save lives

The process of gathering knowledge about the natural world is called?

science

A scientist who teaches others about science is _____?

science educator

A hypothesis is a _____ based on observations & your knowledge of the topic.

scientific guess

If a hypothesis is not supported, then _____.

scientist still may ask new questions & form new hypotheses.

Scientists use the SI so that they can ______ & ____.

share and compare their observations & results

The products, processes or knowledge developed to meet a need is _____?

technology

What is the measure of the amount of heat an object has? measured by ___?

temperature degrees Celsius (C)

A measure of how hot or cold something is ___? what tool is used?

temperature thermomoter

What is the measure of the amount of space an object occupies? measured by ____?

volume cubic meter (m3)

The amount of space that something occupies or contains is ___? what tool is used?

volume (3 dimensional space) graduate cylinder