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- 1. Multiple Choice
A book falls off a desk. What moves the book towards the floor?
mass
gravity
friction
speed
- 2. Multiple Choice
Which best explains why a bicycle slows down when it brakes are applied?
The brakes heat the rubber on the bicycle tires
the brakes add energy to the bicycle
the brakes cause frictional forces on the wheels of the bicycle
the brakes increase the force of gravity on the bicycle
- 3. Multiple Choice
A soccer ball is kicked and rolls along a flat field of grass until it comes to a stop. What is MOST responsible for the ball coming to a stop?
air
gravity
mass
friction
- 4. Multiple Choice
A child rides a sled down the snowy hill. Which force is MOST responsible for causing the sled to slow down and stop?
gravity
friction
magnetism
motion
- 5. Multiple Choice
Movers slide a box down a ramp of a truck. What helps slow down the box as it slides to the bottom of the ramp?
friction
inertia
gravity
magnetism
- 6. Multiple Choice
A wagon is pushed in a straight line. How would an increase in friction on the wagon wheels affect the wagon?
It would cause the wagon to move faster.
It would cause the wagon to change mass.
It would cause the wagon to change direction.
It would cause the wagon to slow down
- 7. Multiple Choice
Which of the following is an example of friction that is helpful?
car tires on the road
bike brakes
tread on the bottom of your shoes
all examples are helpful
- 8. Multiple Choice
When an object moves from one place to another, we call it...
friction
motion
gravity
force
- 9. Multiple Choice
a cup sitting on the table has what type of force?
unbalanced force
gravity only
friction
balanced force
- 10. Multiple Choice
A water bottle tipping over on your desk has what type of force?
balanced force
unbalanced force
friction
magnetism
- 11. Multiple Choice
magnets move because of what type of force?
friction
gravity
motion
magnetism
- 12. Multiple Choice
What law of physics says anything in motion stays in motion unless a force acts upon it.
friction
gravity
inertia
motion
- 13. Multiple Choice
A ball sitting at the top of a hill has what type of energy?
potential energy
kinetic energy
sun energy
force
- 14. Multiple Choice
a ball rolling down a hill has what type of energy?
potential energy
sun energy
kinetic energy
force energy
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