WorksheetsRiver Flooding
Total questions: 12
Worksheet time: 6mins
Rocks and soil that do not allow water to soak into them are called...
permeable
impermeable
Steep slopes cause rain to quickly run down to the river reducing the chance of it infiltrating and causing...
more flooding
less flooding
Very wet soil means rain...
is unable to soak into the ground causing more flooding
will sink into the ground quickly causing less flooding
Trees and plants acting as an umbrella to stop rain hitting the ground is called...
infiltration
interception
runoff
impermeable
Permeable rocks and soils...
do not allow water to pass through them
allow water to pass through them
Runoff is...
water falling from the atmosphere as rain, hail, sleet or snow
rainwater soaking into the ground
evaporation of water from leaves
rainwater moving over the ground surface
What are flash floods?
When rain falls and lightning strikes
Flooding that has lights in it
Floods that require light to happen
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
What pairs of factors are human causes of flooding?
Heavy rainfall & urbanisation
Steep slopes & deforestation
Urbanisation & deforestation
Snow melt & urbanisation
What pairs of factors are physical causes of flooding?
Urbanisation & snow melt
Deforestation & steep slopes
Snow melt & steep slopes
Heavy rainfall & deforestation
What is the cause of flooding in this image?
Steep slopes
Compacted/dry soil
Urbanisation
Snow melt
How would building a new town contribute to flooding?
There would be less infiltration, therefore decreasing surface runoff.
There would be more infiltration, therefore increasing surface runoff.
There would be less infiltration, therefore increasing surface runoff.
There would be more infiltration, therefore decreasing surface runoff.
How would removing trees increase the risk of flooding?
There would be less interception by tree leaves, increasing the amount of water reaching the river
There would be more interception by tree leaves, decreasing the amount of water reaching the river
There would be less interception by tree leaves, decreasing the amount of water reaching the river
There would be more interception by tree leaves, increasing the amount of water reaching the river
