Question

2. Warm air is lighter and therefore moves-
a. downwards.
b. upwards.
c. northwards.​

Answer 1

Warm air molecules contain more heat energy, which causes them to move more rapidly. Rapid movements lead to more frequent collisions between molecules which causes the molecules to separate. Therefore there is more empty space between molecules in warmer air and the air is lighter.

Answer 2

Answer:

upwards

Explanation:

Warm air molecules contain more heat energy, which causes them to move more rapidly. Rapid movements lead to more frequent collisions between molecules which causes the molecules to separate. Therefore there is more empty space between molecules in warmer air and the air is lighter