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Name _______________________________Class __________________ Date __________________
Matter in Motion
MATCHING
Match the correct definition with the correct term. Write the letter in the space provided. Some
terms will not be used.
______ 1. a push or a pull that always acts on an object
a. motion
______ 2. a change in a moving object’s speed or direction
b. speed
______ 3. a force that always acts to oppose motion
c. velocity
______ 4. a measure that does not change when an object’s location changes
d. acceleration
______ 5. the measure of gravitational force exerted on an object
e. force
______ 6. speed of an object in a particular direction
f. friction
______ 7. the force of attraction between objects
g. gravity
h. mass
MULTIPLE CHOICE
Write the letter of the correct answer in the space
provided.
i. weight
______ 8. Which is an example of friction that is helpful?
a. car engine parts wearing out
b. tires moving a car forward
c. holes developing in your socks
d. the erosion of soil by wind
______ 9. The gravitational pull is greater between two objects that
a. have greater masses.
b. have rougher surfaces.
c. are farther apart.
d. are moving at greater speed.
______10. What is the net force on an object when you combine a force of 10 N north with a force of 5 N
south?
a. 5 N south
b. 15 N north
c. 50 N north
d. 5 N north
______11. Mass is
a. different on the moon than on Earth.
b. a measure of gravitational force.
c. a measure of the amount of matter.
d. measured in newtons.
Name _______________________________Class __________________ Date __________________
______12. To produce change in motion, a force must be a(n)
a. balanced force.
b. unbalanced force.
c. frictional force.
d. gravitational force.
______13. When a mover puts furniture on wheels, which type of friction is the mover using to make the job
easier?
a. static friction
b. sliding kinetic friction
c. rolling kinetic friction
d. gravitational friction
______ 14.Friction occurs because of
a. the roughness of any object’s surface.
b. only the weights of any two objects.
c. only the masses of any two objects.
d. unbalanced forces.
______15. If a student has a weight of 420 N on Earth, what is the student’s weight on the moon? (Moon’s
gravity = 1/6 of Earth’s gravity)
a. 70 N
b. 2520 N
c. 70 kg
d. 2520 kg
___ 16.The law of universal gravitation says that gravitational force is
a. related to mass and distance.
b. related to weight and distance.
c. related to mass and friction.
d. related to weight and friction.
Completion
Explain each force diagram below.
1)
Explain the net force on the object
2)
Explain if the forces are balance or unbalanced
3)
Explain if the object is moving or not moving
4)
If moving, explain what direction or directions that it moves