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WorksheetsFloods
Total questions: 70
Worksheet time: 4hrs 30mins
What should I do when a flood threatens?
Don't go outside your house.
Find somewhere else.
Leave that particular place
All the above
What should I do during a flood?
Take shelter
Come at your house
Go to work
Get in your car
What should I do after a flood?
Avoid moving water.
Play it safe.
Stay away from damaged areas unless your assistance has been specifically requested by police, fire, or relief organization.
None of the above.
Where would you most likely see a storm surge?
Why should you avoid floodwater if at all possible?
It's usually filled with sewage and other unhealthy stuff.
It's subject to tidal forces, which can pull you under and drown you.
It's probably moving very quickly.
It's probably very cold.
What is the relationship between flooding and earthquakes? Choose the best answer.
Earthquakes break open underground springs, which flood large areas
Earthquakes usually break large water pipes, flooding entire states
Undersea earthquakes can cause huge ocean waves, which flood shorelines
Floodwaters often seep into fault lines, causing earthquakes
Why is it important to prepare a disaster kit in case of a flood?
If you don't, all your possessions will probably be destroyed by a flood someday.
You may not have time to pack essential supplies in the event of a flooding emergency.
Having a disaster kit is the best way to ensure you won't get wet in the case of a flood.
It will help you pack away all your toys and possessions in advance of a flood.
Tick the answers that are not natural causes of flooding
Urbanization
Steep Slopes
Rapid Snow melts
Deforestation
Floods are very _______.
dangerous
safe
different
destroy
Floods are caused by ______ rains
hard
heavy
harm
cloudy
Floods are caused by heavy rains and river ______.
lakes
bridges
flows
overflows
Trees and plants can _____ floods.
prepare
people
prevent
press
What is a prepared path for flood waters to flow over, often to prevent damage to communities?
dam
flood
floodplain
levee
How is soil like a sponge?
It can hold only a limited amount of water
It is healthiest when it gets as much water as possible
It can only absorb fresh water, not salt water
Although it doesn't move, it's actually a living creature
Pick the social impact of river floods.
Housing repairs
Deaths
Losing a job
Soil erosion
Pick the economic impact of river floods.
It is hard to move around
People become homeless
Floods create or replenish wetland habitats
Business closed for refurbishment
Pick the environmental impact of river flooding.
Insurance premiums go up significantly.
Wildlife can be killed.
Electricity is cut off
An increase in flood defence systems.
Which of the soft engineering approaches listed below involves thinking about how areas of land are used and by whom?
Laissez faire
Zoning
Sectioning
Proportion thinking
Apart from preventing flooding, what is another benefit of constructing a dam.
Producing hydroelectric power.
Provides drinking water for urban settlements.
Creates a lake for recreation and tourism.
All of the options.
which among the following is NOT the Effect of Floods
Destruction of standing crops
Soil Erosion
Emission of poisonous Gases and Lava
Huge loss to life and property
Preventive measures of floods are
Staying indoors
Planting more trees
To reduce the impact of floods, humans can do all of the following EXCEPT...
listen to the warning system
drive through a flooded area to evacuate
get to higher ground
create an evacuation plan
How does deep snow cause flooding?
Freezing water causes flooding
Sudden warm temperatures combined with heavy rains causes flooding
Too much rain causes flooding
Melting snow causes flooding
Which of the following are included as causes for floods in the reading passage?
Melting snow
Poorly built roads
Large lakes
Droughts
Which of the following words are natural disasters?
Flood
Earthquake
Airplane crash
Typhoon
A broken human-made dam is compared to what?
A broken ice dam
Overflowing
A tsunami
A tidal wave
Which of the following best describes how a frozen river can cause a flood?
The water behind the ice dam collects and when the dam breaks, it causes flooding upstream.
The ice in the river cracks into piecesthat eventually create a dam causing the water to overflow.
The ice in the river cracks causing the water to overflow.
The ice in the river melts too quickly and causes a flood.
How does melting snow cause problems related to flooding?
It makes the level of the river rise
It causes pieces of ice to block the river
It makes the water too cold
It makes the rivers run too fast
Which of the following is true about floods?
They are the most common type of natural disaster.
They take place in almost any location.
They produce very little damage and no deaths at all.
Scientists have not studied floods for very long.
What are the negatives of flood warnings?
It is expensive
Not everyone will get the message
It doesn't stop the flooding
It damages the environment
Identify the type of flood shown in the photograph.
River
Coastal
Flash Flood
Identify the type of flood shown in the photograph.
River
Coastal
Flash Flood
Identify the type of flood shown in the photograph.
River
Coastal
Flash Flood
Infiltration is...
water flowing down a road
water flowing onto a flood plain
water sinking into the soil
where a river meets the sea
Rocks and soil that do not allow water to soak into them are called...
permeable
impermeable
What is the cause of flooding in this image?
Steep slopes
Compacted/dry soil
Urbanisation
Snow melt
What is the cause of flooding in this image?
Impermeable surface
Steep slopes
Snow melt
Heavy rainfall
Which of the following will reduce flooding?
Deforestation
Afforestation
Building more houses
Constructing new roads
Flooding occurs when....
The amount of water in the river is larger than the holding capacity of the river
The amount of water in the river is equal to the holding capacity of the river
The amount of water in the river is lower than the holding capacity of the river
In which country was the deadliest flood in history?
Pakistan
Netherlands
China
Vietnam
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 do steep slopes increase flooding?
The water reaches the river slower
The water gets soaked up by the land quicker
The water isn't absorbed at all
The water flows faster down the slopes reaching the river quicker
How does a built up area increase flooding?
The water enters the river more slowly
Less water is absorbed because concrete and build up areas are not permeable surfaces (water cannot go through)
There is more opportunity for the water to be absorbed because concrete and built up areas are permeable surfaces (water can go through)
There is more green space
Why does having lots of plants make flooding slower?
The plants cannot absorb water very fast
The plants' roots are connected to the river
The plants absorb water (interception) so the water takes longer to reach the river
Plants increase run-off
Dams lead to high river discharge downstream.
True
False
Dams are an expensive flood management strategy. True or false?
True
False
'Removing sand, mud and rocks from the river bed'. Which flood management strategy is this?
Dams
Embankments
Dredging
Afforestation
Does dredging increase or decrease river capacity?
Increase
Decrease
Name one example of a flood prone City.
(a)
What are the benefits or challenges of a forecasting and warning system as a flood mitigation measure?
What are the benefits and challenges of evacuation drills as a flood mitigation measure?
Explain one example of a Social Impact due to floods.
Explain one example of an Economic Impact due to floods.
What are the benefits and challenges of Leeves and Floodwalls as a flood mitigation measure?
