What is a flood?

• This is when water is wasted

• This happens when water moves fast

• Floods are like giant puddles. They happen when water rises to a high level and causes damage.

• This is when water goes into the ocean

Tags

NGSS.MS-ESS2-4

NGSS.MS-ESS3-2

Why do floods happen?

• There is too much water on earth.

• If too much rain falls too quickly the ground becomes completely covered in water. The longer the rain falls, the higher the water will rise.

• Water can not be controlled.

Tags

NGSS.MS-ESS2-4

NGSS.MS-ESS3-2

Avoid danger during a flood by staying dry and waiting for the water to go down.

• True

• False

Tags

NGSS.MS-ESS3-2

The water can become dirty due to pollution and people should NOT go out in the flood waters.

• True

• False

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NGSS.MS-ESS3-2

NGSS.MS-ESS3-3

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

Tags

NGSS.MS-ESS2-4

NGSS.MS-ESS3-2

What can we do to prevent flooding?

Tags

NGSS.MS-ESS3-2

NGSS.MS-ESS3-3

NGSS.MS-ETS1-1

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

Tags

NGSS.MS-ESS3-2

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

Tags

NGSS.MS-ESS2-4

Which one of these will reduce the risk of flooding?

• cutting down trees

• building more roads

• planting trees

• building more houses

Tags

NGSS.MS-ESS3-2

A "human" cause of flooding is...

• impermeable rocks

• building roads, houses and factories

• heavy rain

• steep valley sides

Tags

NGSS.MS-ESS3-4