Air circulations Flashcards
What is the weather like at the Equator and why?
It’s hot and rainy because warm air rises, cools, and forms clouds and rain.
What happens at 30° N/S in the Hadley Cell?
Air sinks, causing high pressure → dry and hot weather (like deserts).
Describe the Hadley Cell.
Warm air rises at the Equator (rainy), sinks at 30° (dry). Makes the rainforest and deserts.
What is the Ferrel Cell?
Between 30–60°. Air rises at 60°, falls at 30°. Weather is mild and changeable (like the UK).
itsnot too hot not too cold
What is the Polar Cell?
Cold air sinks at the poles → dry and freezing weather. Found from 60° to 90°.
What is low pressure?
Warm air rises, cools, and makes clouds and rain. Found at the Equator and 60°.
What is high pressure?
Cold air sinks, no clouds → dry and sunny. Found at 30° and the poles.
Why does it rain in the UK a lot?
The UK is at 60°, where warm and cold air meet. Air rises, causing low pressure and rain.
Why do tropical storms form near the Equator?
Because it’s hot, with rising air and low pressure. The warm sea gives energy.
🔽 Low Pressure meaning
Low Pressure = AIR RISING
Warm air rises
Rising air cools → makes clouds → leads to rain
Found at:
Equator (0°) → hot + rainy
60° N/S → where UK is → wet + cloudy
“Air Rises → Rain Falls” ☁️🌧️
High Pressure = AIR SINKING
High Pressure = AIR SINKING
Cold air sinks
Sinking air stops cloud forming → clear, dry, sunny
Found at:
30° N/S → dry deserts
Poles (90°) → dry + cold
“Air Sinks → Skies Clear” ☀️
