- Scientists use previous experiences to
Your answer:
make predictions about what will happen under certain circumstances
collect data
analyze their data
serve as a control in the experiments
- After scientists analyze the results of their experiments, then they
Your answer:
include a control
make a hypothesis
communicate results
decide on the variables to test
- Which of the following steps to solve a problem is completed first?
Your answer:
testing the hypothesis
analyzing data
identifying the problem
forming the hypothesis
- Which of the following steps to solve a problem is completed last?
Your answer:
testing the hypothesis
drawing conclusions
identifying the problem
analyzing data
- Listing what is already known about a problem and the possible ways to solve the problem are parts of
Your answer:
hypothesizing
planning
collecting data
concluding
- ? can save time and money by testing ideas that are hard to test.
Your answer:
biases
conclusions
variables
models
- A statement that can be tested is a(n)
Your answer:
variable
conclusion
observation
hypothesis
- A factor in an experiment that can change is a(n)
Your answer:
control
hypothesis
observation
variable
- A sample that is treated exactly like all other experimental groups except that the variable is not applied to it is a(n)
Your answer:
conclusion
control
hypothesis
observation
- Scientists conduct multiple trials of experiments to
Your answer:
experiments always have the same results
make the results more reliable
to save money
it's more fun
- One tool that can be used to display data is a
Your answer:
microscope
beaker
computer
balance
- One way to reduce bias in an investigation is to
Your answer:
ask only boys a question about a school topic
use descriptions as data
make sure the data comes out the way you want it to
collect numerical data
- A good way to organize and record your results and observations is
Your answer:
by using a computer
in a table or chart
with a balance or scale
by having a good experimental design
- Which of the following units is part of the International System of Units, or SI (metric system)?
Your answer:
miles
feet
pounds
grams