Hot deserts

Where are hot deserts located?
20 – 30 Degrees North and South of the Equator / On the Tropic of Cancer and Tropic of Capricorn.
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What is the temperature like in the desert?
Hot (25-35 degrees C Averages)
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What is the precipitation like in the desert?
Dry/ Arid (Less than 250 mm a year)
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What is the diurnal range like in the desert?
Large range (37 degree difference)
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Name 3 adaptations of the cacti plant (xerophyte).
Spikes not leaves (less transpiration) / Thick stem (more storage room for water) / Extensive root system (Reach out for surface/ ground water).
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Name 3 adaptations of the desert fox.
Large ears - Large surface area helps the fox lose heat and cool down. / Light fur - To reflect sun and keep cool/ to camouflage in the sands. / Burrowing - Cooler underground so can get out of the midday heat.
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Name an economic opportunity in the desert.
Resources (mining for oil & minerals) / Farming (if irrigated) / Energy (large solar farms).
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Name a social / environmental challenge in the desert.
Low carrying capacity / Accessibility / Extreme climate / Lack of water.
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Define desertification.
Loss of fertile ground/ spread of the desert. The process by which land becomes drier and degraded, as a reult of climate change or human activities, or both.
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How does climate change affect desertification?
Increased temperatures and reduced rainfall means less vegetation likely to stop encroaching sands.
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How does overgrazing /. over cultivation affect desertification?
Due to increased population more food is required – too many crops and cattle grazing will reduce soil and vegetation quality.
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How does deforestation affect desertification?
Due to increased population more resources such as fuel and building materials required. Land is more exposed leaving it exposed to processes leading to desertification.
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How does tree planting (the Great Green Wall) help reduce desertification?
A wall of trees planted across the width of the Sahel. The roots will stabilise the soil and leaf matter will add more nutrients to the area to keep things fertile.
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How do bunds help reduce desertification?
Low stone walls built in parallel lines to slope gradient. Stop surface water running off and more likely to infiltrate into ground and keep area fertile. Eroded soil trapped.
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Other cards in this set

Card 2

Front

What is the temperature like in the desert?

Back

Hot (25-35 degrees C Averages)

Card 3

Front

What is the precipitation like in the desert?

Back

Preview of the front of card 3

Card 4

Front

What is the diurnal range like in the desert?

Back

Preview of the front of card 4

Card 5

Front

Name 3 adaptations of the cacti plant (xerophyte).

Back

Preview of the front of card 5
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