Hot Desert Ecosystem (AQA GCSE Geography): Flashcards
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What fraction of Earth's land is covered by deserts?
What fraction of Earth's land is covered by deserts?
About one-third
Annual rainfall in the Sahara
Annual rainfall in the Sahara
Less than 250 mm per year
Latitude range where hot deserts are located
Latitude range where hot deserts are located
20-30 degrees north and south of the Equator
Number of continents with deserts
Number of continents with deserts
5 of the world's 7 continents
Why does the equator have rainforests not deserts?
Why does the equator have rainforests not deserts?
Hot and lots of rain
What happens to warm moist air at the equator
What happens to warm moist air at the equator
It rises
What warm air does when it rises and cools at equator
What warm air does when it rises and cools at equator
Water turns to rain, creating clouds
State of air at 30 degrees north or south
State of air at 30 degrees north or south
Lost moisture, cool and dry
What cool dry air does at 30 degrees N/S
What cool dry air does at 30 degrees N/S
Sinks back down
Texture of desert soil
Texture of desert soil
Shallow with coarse, gravelly texture
Is desert soil fertile?
Is desert soil fertile?
Not very fertile
Why desert soil isn't very fertile
Why desert soil isn't very fertile
Hardly any leaf fall