Understanding Convection Currents

The video explains how burning paper heats the surrounding air, causing it to rise. This process creates a convection current, where the heated air rises and then cools, causing it to fall back down.

What happens to the air when the paper burns?

• It cools down.

• It heats up.

• It stays the same.

• It disappears.

What is the result of the air heating up?

• The air begins to rise.

• The air turns into liquid.

• The air becomes denser.

• The air remains static.

What happens to the burning paper as the air rises?

• It is swept up with the air.

• It extinguishes.

• It falls to the ground.

• It turns into ash immediately.

What occurs when the convection current cools?

• The air remains at the top.

• The air disappears.

• The air falls back down.

• The air rises further.

What completes the convection current cycle?

• The air turning into a solid.

• The air cooling and descending.

• The air heating up again.

• The air becoming invisible.