Hot water in a pot rises.

Warming hands next to a fire.

Hot air balloon rises.

Raw egg cooks when it hits the frying pan.

The basement is cooler than the attic.

Getting sunburned.

ironing clothes

Ice cube melting on a park bench on a hot day.

Cat on a bed warming next to a fire.

Kettle warming on a stove burner.

A spoon get hot in a cup of tea.

Water is warmer on the surface of a pool and cooler on the bottom.