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River Flooding

Total questions: 12

Worksheet time: 6mins

Name
Class
Date
1.

Rocks and soil that do not allow water to soak into them are called...

a)

permeable

b)

impermeable

2.

Steep slopes cause rain to quickly run down to the river reducing the chance of it infiltrating and causing...

a)

more flooding

b)

less flooding

3.

Very wet soil means rain...

a)

is unable to soak into the ground causing more flooding

b)

will sink into the ground quickly causing less flooding

4.

Trees and plants acting as an umbrella to stop rain hitting the ground is called...

a)

infiltration

b)

interception

c)

runoff

d)

impermeable

5.

Permeable rocks and soils...

a)

do not allow water to pass through them

b)

allow water to pass through them

6.

Runoff is...

a)

water falling from the atmosphere as rain, hail, sleet or snow

b)

rainwater soaking into the ground

c)

evaporation of water from leaves

d)

rainwater moving over the ground surface

7.

What are flash floods?

a)

When rain falls and lightning strikes

b)

Flooding that has lights in it

c)

Floods that require light to happen

d)

This happens when sudden rain from storms cause the water in rivers and streams to flow faster and higher causing damage outside of the rivers and streams

8.

What pairs of factors are human causes of flooding?

a)

Heavy rainfall & urbanisation

b)

Steep slopes & deforestation

c)

Urbanisation & deforestation

d)

Snow melt & urbanisation

9.

What pairs of factors are physical causes of flooding?

a)

Urbanisation & snow melt

b)

Deforestation & steep slopes

c)

Snow melt & steep slopes

d)

Heavy rainfall & deforestation

10.

What is the cause of flooding in this image?

a)

Steep slopes

b)

Compacted/dry soil

c)

Urbanisation

d)

Snow melt

11.

How would building a new town contribute to flooding?

a)

There would be less infiltration, therefore decreasing surface runoff.

b)

There would be more infiltration, therefore increasing surface runoff.

c)

There would be less infiltration, therefore increasing surface runoff.

d)

There would be more infiltration, therefore decreasing surface runoff.

12.

How would removing trees increase the risk of flooding?

a)

There would be less interception by tree leaves, increasing the amount of water reaching the river

b)

There would be more interception by tree leaves, decreasing the amount of water reaching the river

c)

There would be less interception by tree leaves, decreasing the amount of water reaching the river

d)

There would be more interception by tree leaves, increasing the amount of water reaching the river