Geography Chapter 2.2 (Types of Rainfall) Flashcards
Write the characteristics of cold air and warm air
Cold air is denser. It sinks. It creates high pressure.
Warm is lighter. It rises. It creates low pressure
Which type of rainfall is caused by a warm air mass meeting a cold air mass
Frontal rainfall
Explain the different types of clouds
There are three different types of clouds:
1. Cumulus clouds.
2. Stratus clouds.
3. Cirrus clouds.
1. Cumulus clouds: they are fluffy clouds. They form low in the sky and can bring heavy, short showers. Some can grow into tall dark clouds that bring very heavy rain.
2. Stratus clouds: They are big blankets of dull cloud that hang in the sky. They hang low in the sky and can cover it all. They can give a light drizzle but no real showers.
3. Cirrus clouds: they are thin wispy high clouds. It’s freezing up there so they are made of ice crystals. They can mean bad weather is on the way.
Explain frontal rainfall
When a warm air mass meets a cold one, the warm air mass is forced to rise over the cold one. The rising air cools. The water vapour condenses. Clouds form. It rains. So we get frontal rainfall.
Name the two other types of rainfall
Convectional and relief
Diagram for frontal rainfall (copy)
Diagram for convectional rainfall (in the copy)
Diagram for relief rainfall (copy)