Unit 1: Introduction to Physical Science

The part of an experiment that a scientist changes is a _____________ variable. 

• dependent
• independent
• constant
• control

The part of an experiment ___________________ that changes as a result of what the scientist changed. 

• dependent 
• independent
• constant
• control 

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What do you measure with a spring scale?

• weight in pounds

• mass in grams

• distance in inches

• distance in centimeters

Scientists test a hypothesis by

• formulating questions.
• designing models.
• doing experiments.
• drawing conclusions

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A measurement that is accurate is one that

• is as exact as possible
• is close to the true value.
• contains at least four significant figures.
• contains five decimal places.

An important science skill is critical thinking. This means

• thinking logically to solve a problem.
• discovering the shortcomings of others.
• knowing when something is very important.
• testing a hypothesis during an experiment.

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Any factor in an experiment that can change is referred to as a

• constant
• variable
• control
• data

A possible explanation for a set of observations or answer to a scientific question. Written an an IF, AND, THEN statement.

• scientific law
• prediction
• hypothesis
• scientific inquiry

The factor that is measured in an experiment and changes as a result of changes to the independent variable in an experiment.

• independent variable
• dependent variable
• controlled experiment
• observation

What is the ability to perform work or change an object? It is measured in Joules. 

• motion
• energy
• newton-meter
• work

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