Force and Motion Quiz-Unit 7

1. What does speed measure?

• direction
• velocity
• mass
• how fast an object moves over a given period of time

2. If a train travels 800 miles in 5 hours, what is its rate of speed?

• 16 mph
• 150 mph
• 160 mph
• 200 mph

3. If you say that an airplane is traveling 600 mph west, you are describing its

• speed
• velocity
• direction
• thrust

4. What is force?

• A something that pulls
• B. Something that pushes
• C something that falls
• something that pulls and pushes

5. The force of gravity

• pushes.
• pulls.
• halts.
• none of these

6. The magnitude of a gravitational force depends on

• the size of the object.
• the size and shape of the object
• the distance of an object from another object.
• the size and distance of objects from each other.

The magnetic force

• pulls.
• pushes and pulls.
• pushes.
• creates the force of electricity.

9. What does friction do?

• holds things back or slows them down
• makes things go faster
• changes the velocity of an object
• pulls objects towards its center

10. How much or little friction is produced depends on

• the weight of the objects.
• the shape, speed, and material of the objects.
• the heat of the objects.
• all of these

11. What must happen for work to be done?

• The object must create a force.
• The object must be magnetic.
• The object must move
• The object must produce power.