Question

c. Fill in the blanks
air .............. on heating ​

Answer 1

Air warms on heating.

EXPLANATION

1. As air warms up, the molecules start to vibrate and bump into each other, increasing the space around each molecule.
2. Because each molecule uses more space for motion, the air expands and becomes less dense (lighter).
3. The opposite effect happens when air cools.

HOPE IT HELPS❤. MARK AS BRAINLIEST

Answer 2

Answer:

expands

Explanation:

Air expands on heating. Why does this happen? It is because the particles of air on becoming warm, move away from each other and take up more space. So we can say that air on becoming hot occupies more space. Since the particles move away from each other, the air becomes less dense and lighter in weight.

As a result, warm air rises up. On the contrary, on cooling the particles of air come closer to each other. Due to this, the volume of air becomes less, the air becomes more dense and heavier. This can be demonstrated by a simple activity.