Weather Hazards (OCR GCSE Geography A (Geographical Themes)): Flashcards
📚Flashcards
Practise the cards
14 cards from this deck
ShowHide
Practise the cards
14 cards from this deck
What is Global Atmospheric Circulation?
What is Global Atmospheric Circulation?
Air movement between equator & poles affecting climate
Main atmospheric circulation cell
Main atmospheric circulation cell
The Hadley Cell
What happens to ground at the equator?
What happens to ground at the equator?
Intensely heated by the sun
Effect of equator heating on air
Effect of equator heating on air
Air rises, creating low pressure
Where air cools & sinks in Hadley Cell
Where air cools & sinks in Hadley Cell
30° north & south of equator
Pressure zone where air sinks at 30° N & S
Pressure zone where air sinks at 30° N & S
High pressure zone
Characteristics of sinking air
Characteristics of sinking air
Warmer, drier, low rainfall
What is found in high pressure zones at 30°?
What is found in high pressure zones at 30°?
Deserts
Latitude line where deserts are found
Latitude line where deserts are found
Tropic of Cancer
Pressure type when air is sinking
Pressure type when air is sinking
HIGH Pressure
Pressure type when air is rising
Pressure type when air is rising
LOW Pressure
What causes areas to have certain weather types?
What causes areas to have certain weather types?
Global Atmospheric Circulation
Source of UK's weather systems
Source of UK's weather systems
Low pressure systems from the Atlantic
Weather brought by low pressure systems
Weather brought by low pressure systems
Wet and windy weather