Choose the letter of the best answer and write it on your notebook/on a separate sheet of paper.
1. Which of the following is needed for convection to happen?
a. Electromagnetic waves c. Fluid/Gas
b. Fire d. Light in the form of ray
2. What word means the same as “warm fluid moves from place to place, carrying energy
with it”?
a. Conduction c. Inflammation
b. Convection d. Radiation
3. What word means the same as “energy is passed between particles through direct
collisions”?
a. Condensation c. Convection c. Conduction d. Radiation
4. Which would be an example of a heat insulator?
a. Copper pot c. Iron nail
b. Gold bracelet d. Wooden spoon
5. Which of the following reasons why majority of people wear white or lightcolored clothes
in summer?
a. Because it reflects less heat
b. Because it reflects more heat
c. Because it transfers less heat
d. Because it transfers more heat
6. A repelling force occurs between two charged objects when the charges are of
.

a. unlike signs c. equal magnitude
b. like signs d. unequal magnitude

7. Charge is not easily transferred in.

a. conductors c. semi-conductors
b. not conductors d. insulator

8. Which of the following is the Law of Electric Charge?
a. opposite charges repel; like charges attract
b. like charges repel; opposite charges attract
c. neutral objects attract charged object
d. neutral objects attract charged object

9. What happens when a rubber rod is rubbed with a piece of fur, giving it a negative
charge?

a. Protons are removed from the rod.
b. Electrons are added to the fur.
c. The fur is left neutral.
d. The rod gains protons.

10. If you comb your hair and the comb become positively charged, what will happen to your
hair?

e. It will remain unchanged.
f. It will become positively charged.
g. It will be repelled by the comb.
h. It will become negatively charged.