ChestertonCC - Geo - Flooding - human causes of flooding

What is river discharge?

• The amount of water in a river.

• The maximum amount of water a river can hold.

• The amount of rainwater flowing into a river.

• The amount of rain falling.

What is river capacity?

• The amount of water in a river.

• The maximum amount of water a river can hold.

• The amount of rainwater flowing into a river.

• The amount of rain falling.

Rivers flood when their _____ is greater than their _____.

• discharge

• capacity

• deforestation

• urban growth

Floods are more likely to happen when rainwater flows _____ across the land into the river.

• quickly

• slowly

Rain lands on trees' leaves before it falls to the ground. This is called _____.

• interception

• deforestation

• urban growth

• impermeable

_____ happens when people cut down trees for wood and to clear space for new buildings.

• deforestation

• interception

• urban growth

• impermeable

What do herds of heavy animals like cows do to soil?

• Compress it when they move over it.

• Loosen it when they eat grass.

• Saturate it when they drink water.

• Compress it when they stay still.

Rain cannot easily soak into compressed soil. True or false?

• True

• False

_____ happens when the population of a town or city increases, so new roads and buildings are constructed.

• deforestation

• interception

• urban growth

• impermeable

Roads made of concrete or tarmac are _____, so rain _____ soak into them.

• permeable

• impermeable

• can

• cannot