14. Infrared waves are an example of heat transfer by A. convection
B. radiation
C. conduction
D. motion of the air

15. Which of the following is the best conductor of heat?
A. glass
B. wood
C. plastic
D. tin

16. Heat registers are usually placed near the floor because
A. cold air rises
B. cold air expands
C. hot air rises
D. hot air expands

17. The basement of a modern house is often heated using hot water that passes through plastic pipes in a concrete floor. Which form of heat transfer would best explain how the concrete is warmed?
A. conduction
B. convection
C. radiation
D. all of the above

18. Fill in the blanks for the following terms
Glass
Convection
Conduction
Kinetic energy
Potential energy
Radiation
Metal
Contact

.
a. In conduction, heat is transferred through the of two objects.
b. The collision of high-energy molecules of a burner results in a transfer ofto a pot.
c. Two processes involved in making air directly above a burner feel warm are and
d. A wax bead is placed on the end of a metal rod and another on the end of a glass rod.
The other end of each rod is placed over a flame. The wax bead that will melt first is the one on the rod.

19. The transfer of heat in a liquid involves which of the following?
A. radiation
B. conduction
C. convection
D. gravity

20. Which statement is true about the transfer of heat in a liquid
A. heat radiates in all directions in a liquid
B. heat is passed from one molecule to the next
C. heat flows as a circular current in the liquid
D. heat does not move in a liquid
21. Convection currents in liquids move
A. not at all
B. up at the point of the heat source, then toward the cooler water
C. down at the point of the heat source, then toward the cooler water
D. directly away from the heat source toward the cooler water

22. Which of the following statements about a land breeze is incorrect?
A. The sea loses heat more slowly than the land. The air over the sea is warmer.
B. Warm air over the sea rises.
C. Air over land is cooler. Cool air is more dense and sinks.
D. Cool air flows toward the land to replace warm air that has risen.

23. Which of the following statements about a sea breeze is correct?
A Air over land is cooler.
B. Air over the water is cooler.
C. Air over the water is less dense and sinks,
D. Air over the land is more dense and sinks.

24. When compared to a land breeze, a sea breeze is
A. warm and strong
B. cool and weak
C. warm and weak
D. cool and strong

25. The heat transfer method that causes land and sea breezes is
A. radiation
B. conduction
C. convection
D. concentration
26. Fill in the blanks. Select the appropriate words from the following list. Words may be used
Heats
Flows toward
Cooler
Sinks
Rises
warmer
a. The air in a sea breeze over the land and over the water.
b. The air in a land breeze over the land and over the water.

27. Which pot would transfer heat the best?
A. a clay pot
B. a glass pot
C. a stainless steel pot
D. a steel pot with a copper bottom

28. The type of heat transfer that allows a pot of soup to heat evenly is
A. conduction
B. convection
C. radiation
D. conductivity

29. The method by which a vehicle radiator is cooled is
A. air rushing through the radiator
B. coolant flowing to the radiator
C. coolant flowing away from the radiator
D. all of the above

30. When a refrigerator is running, the pipes at the back feel hot because
A. the refrigerator is too close to the wall
B. the refrigerator has a mechanical problem
C. the pipes have absorbed heat from the surrounding air in the room
D. the pipes have absorbed the heat that has been transferred from the food inside
31. In a refrigerator, which is the last place heat from food transfers to?
A. fins or wires
B. coolant in the pipes
C. air inside the refrigerator
D. air outside the refrigerator