Name
Date
Forces and Motion
Complete.
acceleration
gravity
mass
speed
work
balance
inertia
momentum
spring scale
force
joule
motion
velocity
friction
magnetism
newton
weight
Matching
Match each definition with a word.
1.
A measure of the force of gravity on an object.
2.
Energy in the form of a push or a pull.
3.
A measure of both the speed and direction of a moving object.
4.
The tendency of an object to resist a change in motion.
5.
A force that opposes motion between two surfaces that are touching.
6.
A change in the position or place of something over time in comparison to a
reference point.
7.
A device used for measuring mass.
8.
The rate at which velocity changes.
9.
The unit of work in the metric system.
10.
A device used for measuring weight.
Multiple Choice
Select the definition that most nearly defines the given word.
11.
motion
A. A change in the position or place of something over time in comparison to a
reference point.
B. A measure of the amount of force needed to move an object a certain distance.
12.
force
A. Energy in the form of a push or a pull.
B. A device used for measuring mass.
13.
magnetism
A. The unit of work in the metric system.
B. The natural force produced by a magnetic field.
14.
speed
A. A measure of how fast something moves over a distance.
B. The natural force produced by a magnetic field.
Name
Date
15.
joule
A. A force that pulls objects towards each other.
B. The unit of work in the metric system.
16.
friction
A. A force that opposes motion between two surfaces that are touching.
B. A measure of how fast something moves over a distance.
17.
momentum
A. A measurement of the motion of something. This is equal to the product of the
moving object's mass times its velocity.
B. A measure of both the speed and direction of a moving object.
18.
mass
A. The amount of matter that an object has.
B. A force that opposes motion between two surfaces that are touching.
19.
balance
A. The tendency of an object to resist a change in motion.
B. A device used for measuring mass.
20.
inertia
A. The tendency of an object to resist a change in motion.
B. A device used for measuring weight.
Review
21.
Joule is the metric unit of ____.
A. Power
B. Efficiency
C. Work
D. Force
22.
The table below shows the motion of two objects. Which conclusion is NOT correct?
A. Object B has a negative velocity.
B. Both objects A and B have a constant acceleration.
C. Object B is slowing down.
D. The acceleration of object A is 2m/sec/sec.
Name
Date
23.
The table below shows the time and speed of two moving toy cars. Which conclusion is
NOT correct?
A. If the average speed of car A stays unchanged, it will take the car 25 seconds to
travel 1,000 meters.
B. Car B travels 120 meters in 6 seconds.
C. The average speed of car A is greater than that of car B.
D. The average speed of car B is 40 m/sec.
24.
Which statement is true?
A. Forces always act in pairs.
B. The strength of the gravitational force between two objects increases with the
distance between them.
C. The speed of a falling object is determined by its mass.
D. A machine makes a task easier by reducing the amount of work to be done.
25.
The table below shows how far Tom, John, Michael, and Jerry can walk within 30
seconds. Based on the information, you can conclude that the lighter the student, the
greater amount of work done.
A. True
B. False
26.
Work is a force applied over a distance.
A. True
B. False
27.
Which scientist from the 17th century put forth a variety of laws that describe the ways
objects in motion could affect each other?
A. Isaac Newton
B. Galileo
C. Albert Einstein
D. Aristotle
Name
Date
28.
Which type(s) of simple machine can NOT change the direction of a force?
A. A pulley
B. A lever
C. A wheel and axle
D. All of the above
29.
What is the net force when two forces of 100 N each push against a force of friction of
80 N?
A. 180 newtons
B. 20 newtons
C. 280 newtons
D. 120 newtons
30.
Which simple machine is NOT a variation of an inclined plane?
A. A wheel and axle
B. A wedge
C. A screw
D. A ramp
Answer Key
1. weight
2. force
3. velocity
4. inertia
5. friction
6. motion
7. balance
8. acceleration
9. joule
10. spring scale
11. A
12. A
13. B
14. A
15. B
16. A
17. A
18. A
19. B
20. A
21. (C)
22. (A)
23. (C)
24. (A)
25. (B)
26. (A)
27. (A)
28. (C)
29. (D)
30. (A)