Answer the following. Choose the correct letter.

1. Which of the following is NOT an example of radiation?
b. infrared
c. ultraviolet
d. sound waves

2. What kind of heat transfer is occurring when the sun warms the sand?
a conduction
b. radiation
c. convection
d. density

3. the baby chickens kept warm from a heat lamps demonstrates this type of heat transfer.
a. conduction
b. convection
c. radiation
d. none of the above

4. True or False. The sun directly heats the air in our atmosphere.
a true
b. false

5. The reason why water boils causing the circular motion is due to?
a. conduction
b. convection
c. radiation
d. none of the above​