Direction: Encircle the letter of the correct answer.
1. Which is true about mass and gravity?
a. the lesser the mass of the object, the greater the pull of gravity
b. the greater the mass of the object, the lesser the pull of gravity
c the greater the mass of the object, the greater the pull of gravity
d. none of these, gravity and mass are not related
2. Where is the gravitational force directed when you are holding a glass?
a. upward
c. into the glass
b. downward
d. away from the glass
3. Where is the gravitational force directed as you stand on the floor?
a. upward
c. backward
b. forward
d. downward
4. It is a force that pulls objects towards one another.
a. electric force
b. gravitational force
c. magnetic force
d. frictional force
5. What force is generated by two surfaces that contacts and slides against each other?
a gravitational force
c magnetic force
b. nuclear force
d. frictional force
6. If the mass of the Earth is doubled, how much increase would the weight of the objects on earth be?
a. halved
c. thrice
b. doubled
d. remains the same
7. It is the ability to do work.
a. friction
b. energy
c. magnet
d. gravity
8. Which is not one of the forms of energy?
a. sound energy
b. electrical energy
c heat energy
d. simple energy
9. What form of energy travels through empty space?
a. nuclear energy
b. sound energy
c. radiant energy
d. heat energy
10. What energy is produced by vibrating objects?
a. thermal energy
b. mechanical energy
c. light energy
d. sound energy
11. The energy produced by moving electrons is called
c. thermal energy
a. electrical energy
d. mechanical energy
b. sound energy
12. The form of energy that is produced due to the movements of the molecules.
c. nuclear energy
a. heat energy
d. mechanical energy
b. sound energy
13. What energy is used in different industries and at home that makes appliances work?
a. nuclear
c. mechanical
b. electrical
d. chemical​