Convectional rainfall occurs in hot climates when the sun heats the ground, causing water to evaporate and rise into the air where it cools and condenses to form clouds and rain. Orographic rainfall is characteristic of mountainous regions, where humid air from the sea reaches mountains, rises and cools as it hits the mountains, forming clouds and raining on the windward side. Frontal rainfall occurs at the boundary between warm and cold air masses, when a hot, humid air mass meets and rises above a cold air mass, cooling to form clouds and rain.

2. CONVECTIONAL
This type os rainfall is characteristic of hot climates
The Sun heats the ground and water
evapores
As water vapour rises, it
cools
When water vapour cools, it
condenses and forms droplets
that form clouds and fall to the
Earth as rain.

3. OROGRAFIC OR RELIEF
This type of rainfall is characteristic of mountainous regions
Hot, humid air from the
sea reaches a mountain.
The air raises
and cools.
Clouds form, and it rains on the
windward side of the mountain,
the side which receives the ocean
air. It does not rain on the other
side.

4. FRONTAL
This type of rainfall takes place at the boundary, or front, between a mass of warm
air and a mass of cold air.
A mass of hot, humid air meets a mass of cold air.
The mass of hot air weighs less and
rises above the mass of cold air.
When it rises, it cools.
Clouds form and it rains.