1. It is a force that opposes motion between two surfaces rubbing against each other.
a. friction
b. gravity
c. magnet

2. It is a force that pulls the objects towards the Earth's surface.
a. friction
b.gravity
c. magnet

3. A bicycle moves faster on a cemented road than on a bumpy road. Why?
A. Friction is greater on a cemented road.
B. Friction is lesser on a cemented road.
C. There is no friction on a cemented road.

4. Why does a car travel faster in going down than in going up?
A. It is moving against gravity.
B. It is being pushed by the wind.
C. It is moving toward gravity.

5. Why is it difficult to climb up the stairs rather than to go down the stairs? You____.
A. go with gravity.
B. are against gravity.
C. move upward.

6. This kind of friction occurs in stationary object or objects at rest.
a. static friction
b. sliding friction
c. rolling frictio

7. It occurs when two objects rub ore slide against each other.
a. static friction
b. sliding friction
c. rolling friction

8. It occurs when an objects move through a fluid which either can be a liquid or gas.
a. static friction
b. sliding friction
c. fluid friction

9. When food or liquids become hot, their molecules absorb energy, begin vibrating rapidly, and start to bounce off of each other. As they collide, energy is produced and transferred, which warms and cooks our food. What form of energy is described?
A. Sound Energy
B. Heat Energy
C. Light Energy

10. If we burn a sheet of paper, energy is given off which we see as a flame or describe as a
A. Sound Energy
B. Heat Energy
C. Light Energy
help Po

nonsense= report​