Thursday, 6 September 2007

Common Test II Qn 13.

a. (i) What are floodplains?

Floodplains are flat land alongside a river that is covered by water during a flood.

(ii) Explain why many people choose to live on floodplains.

They can get easy access to water and use the fertile soil for farming.

b. How are rivers useful in agricultural activities?

• Dams built to produce hydro-electricity also store water for farmers to irrigate their crops.
• Stored water can allow farmers to grow an extra crop in a dry season
• Reduce the effects of drought
• Enable the transport of stored water to areas where water is needed urgently (pg. 134)

c. (i) What are the three main tributaries of the River Nile?

Blue Nile, White Nile, Atbara (pg. 135)

(ii) Describe the advantages of the Aswan High Dam on the River Nile.

These are the advantages:

• No more floods in Egypt
• More land is irrigated, producing more food
• Electricity is produced from the hydro-electric station
• Lake Nasser can be used by large boats for transport
• Supports a fishing industry (pg. 137)

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