Lesson 5- Flooding

Lesson 5- Flooding

While you wait: read the article that I have shared on the classroom on the recent Manchester floods.

Quick Quiz

Let's see what we can remember from the past few lessons...

Open Ended

Define the word precipitation.

Define the word precipitation.

Precipitation is any liquid or frozen water that forms in the atmosphere and falls back to the Earth. It comes in many forms such as like rain, hail, sleet and snow.

Multiple Choice

Evaporation is...

• Water moving along the surface of the ground.

• Water turns into tiny droplets which float in the air.

• Water falling from the sky (e.g. rainfall)

• Water vapour turns back into liquid, forming clouds.

Evaporation is...

Evaporation is when a liquid turns into a gas and rises into the atmosphere.

Multiple Choice

Condensation is...

• Water turns into tiny droplets which float in the air.

• Lots of water droplets floating in the sky

• Water vapour turns back into liquid, forming clouds.

• Water moving along the surface of the ground.

Condensation is...

Condensation is when a gas turns back into a liquid through the process of cooling.

Open Ended

What is involved in a geographical experiment?

What is involved in a geographical experiment?

In a geographical experiment we have a research question that we are investigating. We use equipment to follow a method and also complete a write-up of the findings.

Multiple Choice

Does water soak into grass?

• Yes

• No

Does water soak into grass?

Yes- it is permeable (lets water soak through it)

Multiple Choice

Does water soak into concrete/stone?

• Yes

• No

Does water soak into concrete/stone?

No- it is impermeable (does not let water soak through it)

Geographical Investigation write-up

Green pen time- write up

Open Ended

Being a geographer is all about asking questions.

What geographical question could you ask about the previous image to find out a bit more about what's going on?

Sticky notes task

https://www.youtube.com/watch?v=udRNUBHbE0o

Open Ended

What is flooding?

Multiple Choice

Is flooding more likely on higher or lower ground?

• Higher

• Lower

Open Ended

Why is flooding more likely to happen on lower than higher ground?

Open Ended

Explain why melting snow can cause flooding.

Human vs Physical factors

Human- factors to do with people. For example: population, culture, buildings etc

Physical- factors to do with nature. For example: animals, ecosystems weather etc

Open Ended

Can you think of any human factors that could cause flooding?

Challenge: Can you explain why this might cause flooding.

Open Ended

Can you think of any physical factors that could cause flooding?

Challenge: Can you explain why this might cause flooding.

Causes of flooding

Over the next few slides we will investigate factors that cause flooding

Multiple Choice

Is heavy rainfall a human or physical cause of flooding?

• Human

• Physical

Open Ended

Explain your reason to the previous question.

Multiple Choice

Is building and creating new buildings with impermeable surfaces a human or physical cause of flooding?

• Human

• Physical

Open Ended

Explain your reason to the previous question.

Multiple Choice

Are steep-sided slopes a human or physical cause of flooding?

• Human

• Physical

Open Ended

Explain your reason to the previous question.

Multiple Choice

Is cutting down trees a human or physical cause of flooding?

• Human

• Physical

Open Ended

Explain your reason to the previous question.

Poll

Which factor do you think causes the most severe floods?

• Deforestation

• Steep-sided slopes

• Heavy rainfall

• Building with impermeable materials

Open Ended

Explain your answer to the previous question.

Reducing the risk of river flooding

There are many strategies that can be put in place to try and reduce the effects of river flooding.

Open Ended

Give me your ideas- how could we stop rivers from flooding?

Multiple Choice

This type of river engineering is expensive...

• Soft engineering

• Hard engineering

Multiple Choice

This type of river engineering is good for the environment...

• Soft engineering

• Hard engineering

Multiple Choice

This type of river engineering is less effective at reducing river floods

• Soft engineering

• Hard engineering

Multiple Choice

This type of river engineering uses man-made structures to control flooding...

• Soft engineering

• Hard engineering

Flooding- Management Strategies

Over the next few slides you will see information on hard and soft river engineering strategies

Start to consider which one you think will be the most successful in reducing the effects of flooding

Poll

Which river engineering strategy do you think is the most effective at reducing the risk of flooding?

• Afforestation

• Managed flooding

• Channel straightening

• Dams and reservoirs

Open Ended

Explain your answer to the previous question.

Plenary

- 3 things you have learnt

- 2 questions you have

- 1 thing you would like to learn next

Open Ended

3 things you have learnt...

Open Ended

2 questions you have...

Open Ended

1 thing you would like to learn next...