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Geography > Mojave desert (case study) > Flashcards

Mojave desert (case study) Flashcards

1
Q

What is the highest recorded temperature in the Mojave?

A

56.7 C

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2
Q

How much rain is there on average per year?

A

12cm

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3
Q

How much has lake mead decreased in the past 10 years

A

4 trillion galleons less

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4
Q

Where is the Mojave desert?

A

In the southwest of the USA, taking up Western California as well as parts of Nevada, Utah, and Arizona.

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5
Q

Why is transport difficult in the Mojave?

A

There is only one major road (Interstate 15)

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6
Q

Where do the people in the Mojave get water?

A

-Groundwater
-Mojave River
-Colorado river

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7
Q

What are the 4 opportunities in the Mojave desert?

A
  • Mineral extraction
  • Farming
  • Energy production
  • Tourism
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8
Q

Facts about mineral extraction in the Mojave (opportunity)

A
  • Copper, lead, silver, gold, zinc, tungsten, and volcanic cinders were all mined in the Mojave in the 20th century.
    -It earned the miners millions of dollars
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9
Q

Facts about farming in the Mojave (opportunity)

A
  • Water is sourced from groundwater, Colorado River, and Mojave river.
  • Lots of sunshine make groups grow easily
  • Since the USA is a HIC, infrastructure to supply crops with water can easily be built
  • Farming is very profitable
  • Farming causes lots of soil erosion and uses lots of water (up to 80% of the supply)
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10
Q

Facts about energy production in the Mojave (opportunity)

A
  • Energy is produced by a variety of methods: Wind, Solar, Hydroelectric, Fossil fuels
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11
Q

How is wind energy farmed in the Mojave? (opportunity)

A
  • The vast open space means wind travels very far, making the desert perfect for wind generation.
  • The Mojave wind farm is the largest wind farm in the USA and is the 3rd largest onshore wind farm in the world. It has 600 turbines.
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12
Q

How is hydroelectric energy farmed in the Mojave? (opportunity)

A
  • The large rivers in the region, such as the Colorado River and the Mojave river mean some people can use hydroelectric power.
  • The Hoover dam supplies electricity to 8 million people across California, Arizona and nevada. The dam also formed the lake mead reservoir, which acts as a water store for the area.
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13
Q

How are fossil fuels used for energy in the Mojave? (opportunity)

A
  • Oil drilling has taken place in the Mojave for over a century.
  • The oil drilling company, Navajo Nation Oil and Gas Company provides hundreds of jobs to the local people.
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14
Q

Facts about tourism in the Mojave (opportunity)

A
  • National parks offer wild scenery
  • The grand canyon, death valley, and Joshua tree attract lots of tourists
  • Las Vegas attracts over 37 million annual visitors
  • Lake Mead and Lake Powell attract 2 million people per year for sailing, power boating, water skiing, and fishing.
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15
Q

What are the 3 challenges in the Mojave?

A
  • Extreme temperatures
  • Water supply
  • Inaccessibility
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16
Q

Facts about Extreme temperatures

A
  • Average of 12 cm of rain per year
  • Temperatures up to 50 degrees celcius
17
Q

Facts about water supply

A
  • Lake Mead took 6 years to fill thanks to vast size and lack of water
  • 4 trillion gallons less water in Lake Mead than in the last decade.
18
Q

Facts about inaccessibility

A
  • Los Angeles is 260 miles away
  • Nearest smaller city 200 miles away.
  • Reached by Interstate 15 (only major road through Mojave)
  • Fibre optic cables through desert to connect cities
19
Q

Facts about managing water supply

A
  • Colorado river has been diverted to supply water to Las Vegas
  • The Hoover Dam has created Lake Mead which helps to store water during dry months.
  • $15.5 billion scheme to pump groundwater from 260 miles away.
20
Q

Facts about managing inaccessibility

A
  • McCarran International airport in Las Vegas serves 43 million passengers per year from its 4 runways and 2 passenger terminals.
21
Q

Issues with managing water supply

A
  • As Lake Mead drains the pipes to Las Vegas will be above water levels in Lake Mead resulting in a $815 million rescue operation to cope with dropping water levels.
22
Q

Issues with managing inaccessibility

A
  • The fibre optic cables disrupt the desert ecosystem and weeds are growing around them.

Geography (20 decks)

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