Physical Science Unit 1 Exam Review

Question 1

Mass changes based on gravity.

Accepted Answer

False

Question 2

No system is completely closed off from its surroundings. Which is a system that is almost completely closed?

Accepted Answer

A capped thermos.

Question 3

What is THE MOST important lab safety rule?

Accepted Answer

Read all instructions before beginning the experiment.

Question 4

Which statement best explains why a washing machine represents an open system?

Accepted Answer

Water and power come from external sources.

Question 5

What is a metric unit of distance?

Accepted Answer

Meters

Question 6

An explanation of how something in nature works that has been repeatedly tested and confirmed is called...

Accepted Answer

Theory

Question 7

A description of the relationship between observable phenomena is called...

Accepted Answer

Law

Question 8

The variable that you measure in an experiment is the...

Accepted Answer

dependent variable.

Question 9

An educated, testable guess is called...

Accepted Answer

Hypothesis.

Question 10

Hypotheses become theories and theories become laws.

Accepted Answer

False

Question 11

Scientific models do not have any limitations.

Accepted Answer

False

Question 12

The variable that doesn't change in an experiment is the...

Accepted Answer

control.

Question 13

Sometimes a scientist must work with hazardous chemicals or work in a potentially dangerous environment.

Accepted Answer

True

Question 14

Engineers use science to...

Accepted Answer

design solutions to problems.

Question 15

Which of the following is a "good' scientific question?

Accepted Answer

Do all objects fall as the same rate?

Question 16

Which is one of the limitations in science?

Accepted Answer

A hypothesis must be testable.

Question 17

Which statement about models in science is true?

Accepted Answer

Models change to accommodate new discoveries.

Question 18

Which of the following is NOT an example of matter?

Accepted Answer

Light

Question 19

Which of the following is an example of matter?

Accepted Answer

Air

Question 20

The variable that you change in an experiment is the...

Accepted Answer

independent variable.

Question 21

The length of a table is 2.8 meters. This is an example of what type of data?

Accepted Answer

Quantitative

Question 22

Energy makes mass move, and when mass is moved by a force, work is done.

Accepted Answer

True

Question 23

What is an example of qualitative data?

Accepted Answer

Color

Question 24

What makes a material bouncy?

Accepted Answer

Elasticity

Question 25

What is the main criteria for a "good" scientific question?

Accepted Answer

It must be testable.

Physical Science Unit 1 Exam Review

Questions 25

Physical Science Unit 1 Exam Review

Questions 25