Flashcards in Weather hazards Deck (11):
Winds are what?
Large scale movements of air caused by differences in air pressure.
Differences in air pressure are caused by what?
Differences in temperature between the equator and the poles. Winds move from areas of high pressure to areas of low pressure.
What are trade winds?
Surface winds blowing towards the equator.
Tropical storms develop when the sea temperature is what?
27°C or higher.
What direction do tropical storms move in and why?
They move towards the west because of easterly winds from the equator.
Why do storms lose energy when they move over land or cooler water?
This is because the energy supply from the warm water is cut off.
What direction do tropical storms spin in the northern hemisphere?
What direction do tropical storms spin in the southern hemisphere?
The centre of the storm is called what?
The eye of a storm is surrounded by what?
The eyewall, where there's spiralling rising air.