11. Which of the following is a measure of the amount of energy required to change the temperature of a substance?
A) Heat
B) Temperature
C) Pressure
D) Humidity
12. Which of the following is not a type of front?
A) Cold
B) Warm
C) Stationary
D) Wet
13. Which of the following is not a type of cloud?
A) Cumulus
B) Cirrus
C) Stratus
D) Nimbus
14. Which of the following is not a type of thunderstorm?
A) Single-cell
B) Multi-cell
C) Supercell
D) Cumulus
15. What is the term used to describe the boundary between two air masses?
A) Front
B) Trough
C) Ridge
D) Jet stream