Question

6. What happens when air cools?
a. It becomes heavier and rises.
c. It becomes lighter and rises.
b. It becomes heavier and sinks.
d. It becomes lighter and sinks.​

Answer 1

C) becomes geavier and sinks

Explanation:

When air is cooled the thermal energy of air particles decreases. As a result their kinetic energy decreases. Therefore they come closer together. Hence their mass per unit volume ie density increases. So air becomes heavier and sinks

Answer 2

Explanation:

becomes heavier and sinks.