Download Forces and Motion

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 device used for measuring mass.
2.
A measure of the force of gravity on an object.
3.
A measure of how fast something moves over a distance.
4.
A change in the position or place of something over time in comparison to a
reference point.
5.
The amount of matter that an object has.
6.
A measurement of the motion of something. This is equal to the product of the
moving object's mass times its velocity.
7.
A measure of both the speed and direction of a moving object.
8.
A force that pulls objects towards each other.
9.
Energy in the form of a push or a pull.
10.
A device used for measuring weight.
Multiple Choice
Select the definition that most nearly defines the given word.
11.
force
A. A measurement of the motion of something. This is equal to the product of the
moving object's mass times its velocity.
B. Energy in the form of a push or a pull.
12.
mass
A. The amount of matter that an object has.
B. The rate at which velocity changes.
13.
acceleration
A. The rate at which velocity changes.
B. A measure of how fast something moves over a distance.
Name
Date
14.
newton
A. A unit that is a measure of force.
B. A force that pulls objects towards each other.
15.
motion
A. A unit that is a measure of force.
B. A change in the position or place of something over time in comparison to a
reference point.
16.
magnetism
A. The natural force produced by a magnetic field.
B. A force that opposes motion between two surfaces that are touching.
17.
velocity
A. The amount of matter that an object has.
B. A measure of both the speed and direction of a moving object.
18.
work
A. The natural force produced by a magnetic field.
B. A measure of the amount of force needed to move an object a certain distance.
19.
inertia
A. Energy in the form of a push or a pull.
B. The tendency of an object to resist a change in motion.
20.
weight
A. A measure of the force of gravity on an object.
B. A change in the position or place of something over time in comparison to a
reference point.
Review
21.
The handlebar of a bicycle is an example of using a wheel and axle to reduce the
amount of force a rider needs to turn the front wheel.
A. False
B. True
22.
Which law of motion demolished the idea that a moving object needs a push or a pull to
keep its motion?
A. The law of inertia
B. The law of gravitation
C. The second law of motion
D. The law of conservation of momentum
23.
A fingernail clipper is a compound machine made up of a pair of levers and a pair of
wedges.
A. True
B. False
24.
Inertia is the force that keeps an object moving in a circle.
A. True
B. False
Name
Date
25.
Which type of simple machine should you use if you do NOT want to increase force?
A. A fixed pulley
B. A wheel and axle
C. An inclined plane
D. A lever
26.
Which of the following statements is NOT true?
A. Mass is the resistance of an object to a change in its motion.
B. Weight is the gravitational force between an object and Earth.
C. Friction is a natural force that can slow down a motion.
D. Speed measures how fast an object is moving and in what direction the object is
moving towards.
27.
The greater the mechanical advantage, the more work that is done by the machine
itself.
A. True
B. False
28.
Which law of motion says that forces of action and reaction are always equal in size but
opposite in direction?
A. The first law of motion
B. The second law of motion
C. The third law of motion
D. None of the above
29.
Each of the following is an example of a first-class lever EXCEPT ____.
A. A plier
B. A crowbar
C. A bottle opener
30.
If a machine reduces the force you must use to move an object, the machine increases
the distance through which you must apply that force.
A. True
B. False
Answer Key
1. balance
2. weight
3. speed
4. motion
5. mass
6. momentum
7. velocity
8. gravity
9. force
10. spring scale
11. B
12. A
13. A
14. A
15. B
16. A
17. B
18. B
19. B
20. A
21. (B)
22. (A)
23. (A)
24. (B)
25. (A)
26. (D)
27. (A)
28. (C)
29. (C)
30. (A)