6. What happens to a liquid when heated?
A. It remains the same.
C. It increases in temperature,
B. It increases in volume.
D. It increases its water level,
7. Which of the following heat transfers is done in convection?
A. Heat transfer through from substance to another by direct contact.
B. When liquid or gas is heated, the molecules of the heated part move faster and
away from each other.
C. Heat can be transmitted across empty space.
D. Heat was received by the sun.
8. In what way heat gives bad effects to us?
A. It can cook our food.
C. It can burn our skin,
B. It can dry our clothes.
D. It can be used for medical purposes
9. One of the major effects of heat transfer is
A. decreasing the temperature
C. constant temperature
B. increasing the temperature
D. both A and C
10. Which of the statements below shows the importance of heat to us?
A. It can boil water.
B. Too much heat can cause death.
C. It can be used by doctors to detect illnesses.
D. Both A and C​