6. The transfer of heat through electromagnetic waves is known as:
a) Conduction
b) Convection
c) Radiation
d) Insulation
Answer: c) Radiation
7. Which of the following statements is true about insulators?
a) They conduct heat easily
b) They do not conduct heat easily
c) They only conduct heat through convection
d) They only conduct heat through radiation
Answer: b) They do not conduct heat easily
8. The unit of heat is:
a) Joule
b) Watt
c) Celsius
d) Kelvin
Answer: a) Joule
9. Heat always flows from a region of ______ temperature to a region of ______ temperature.
a) Higher, lower
b) Lower, higher
c) Equal, equal
d) None of the above
Answer: a) Higher, lower
10. The process of heat transfer in metals occurs primarily through:
a) Conduction
b) Convection
c) Radiation
d) Insulation
Answer: a) Conduction