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