sahara hot desert climate Flashcards

(8 cards)

1
Q

what is the sahara

A

largest hot desert in the world

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2
Q

covers

A

9 million km squared

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3
Q

how many countries does it occupy

A

11

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4
Q

climate characteristics (5)

A

Very hot summers: Daytime temperatures can reach 50°C.

Large diurnal temperature range: Temperatures can drop to below 0°C at night.

Low annual rainfall: Typically less than 250 mm/year; some areas go years without rain.

High evaporation: Moisture evaporates quickly due to intense heat.

Low humidity and clear skies: Leads to intense solar radiation during the day.

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5
Q

vegetation adaptations (4)

A

Deep tap roots to access groundwater.

Waxy or small leaves to reduce water loss.

Water storage tissues in stems and leaves.

Dormant seeds that only germinate when rain falls.

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6
Q

animal adaptations (4)

A

Nocturnal lifestyles to avoid heat.

Fat storage (e.g. camel humps).

Burrowing to stay cool.

Water conservation through concentrated urine and dry dung.

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7
Q

__% of Sahara is made up of gravel plains and rocky plateaus

A

80

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8
Q

average diurnal range is

A

30º

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