New
New
Year 9

The effects of flooding

I can describe the effects of flooding.

New
New
Year 9

The effects of flooding

I can describe the effects of flooding.

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Lesson details

Key learning points

  1. Flooding causes widespread problems globally.
  2. In Bangladesh, heavy rainfall and snowmelt water regularly cause flooding.
  3. Drinking water can become contaminated by sewage, which leads to widespread health problems.
  4. Flooding causes homelessness and displacement.

Keywords

  • Social effect - an effect on people or communities

  • Environmental effect - an effect on the environment

  • Economic effect - an effect on money or business

  • Short-term effects - effects during and immediately after an event

  • Long-term effects - effects that may last for a long time

Common misconception

Flooding only has negative effects.

Flooding is a natural process; it can have positive environmental effects, such as soil replenishment.


To help you plan your year 9 geography lesson on: The effects of flooding, download all teaching resources for free and adapt to suit your pupils' needs...

Ask students to think about why the effects of flooding may be different in a high income and low income country.
Teacher tip

Equipment

Licence

This content is © Oak National Academy Limited (2025), licensed on Open Government Licence version 3.0 except where otherwise stated. See Oak's terms & conditions (Collection 2).

Lesson video

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Prior knowledge starter quiz

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6 Questions

Q1.
What is the source of a river?
Correct answer: Where a river begins
Where two rivers meet
Where a river ends
Where rainwater collects
Q2.
Which river process wears away rock?
Deposition
Correct answer: Erosion
Transportation
Condensation
Q3.
What is deposition in a river?
The river picking up materials
The river freezing over
The river becoming deeper
Correct answer: The river dropping materials
Q4.
In which part of the river are waterfalls usually found?
Lower course
Correct answer: Upper course
Middle course
Mouth of the river
Q5.
Which landform is created by deposition?
Waterfall
Gorge
Correct answer: Floodplain
Rapids
Q6.
What happens to the river channel as it moves downstream?
It becomes narrower
It becomes shallower
Correct answer: It becomes wider and deeper
It dries up

Assessment exit quiz

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4 Questions

Q1.
What is a social effect of flooding?
Correct answer: Homes being damaged
Crops destroyed
River pollution
Road repairs
Q2.
What type of effect is the destruction of farmland?
Social effect
Correct answer: Environmental effect
Economic effect
Short-term effect
Q3.
Which of these describes a long-term effect of flooding?
Immediate evacuation of homes
Correct answer: Ongoing economic hardship due to damaged businesses
Emergency rescues during the flood
Q4.
Which of the following is true about the effects of flooding?
Flooding only causes damage to the environment
Flooding only causes short-term impacts
Correct answer: Flooding can sometimes have positive effects, like creating fertile soils