CONVECTION

Hot water (less dense) eises to the top while the cold water (denser) descends to the bottom.

- Heat flows in water ( and gas) through convection.

HEAT TRANSFER THROUGH A SOLID

Heat is transfer from a hot end to a cold end of a rod through conduction.

The nearest thumtack from the flame drops first, followed by the others.

SUPPORT SYSTEM IN AQUATIC PLANTS

Aquatic plants stand erect in water because they are supported by the buoyancy of water.

This can be demonstrated by the activity below:

Plant in a beaker without water

In water, plant can stand upright.