3.2 Water in balance

3.2 Water in balance

Part 1

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AardrijkskundeMiddelbare schoolmavo, havo, vwoLeerjaar 2

This lesson contains 30 slides, with interactive quizzes, text slides and 1 video.

Lesson duration is: 45 min

Items in this lesson

3.2 Water in balance

Part 1

Slide 1 - Slide

Learning outcomes 3.2

- You know how an area gets fresh water and how it loses fresh water.

- You understand which factors influence the water balance of an area.

- You can explain the importance of sustainable water management.

Slide 2 - Slide

Look at the picture.

Do you know how a water balance works?

Slide 3 - Slide

Slide 4 - Slide

Water Balance

The water balance shows how much water enters and leaves an area.

Slide 5 - Slide

infiltration – The sinking of water into the ground.

Slide 6 - Slide

Take out your notebook and write down (using the picture) three ways how an area can get water.

Slide 7 - Slide

An area can get water because of:

1. (useful) precipitation

2. supply of water from other areas

3. supply of fossil water, for example from an aquifer, which is a water-bearing layer in the subsurface

Slide 8 - Slide

Go to page 126.

We will now read the text together under the heading 'water balance'

Slide 9 - Slide

Aquifer

What is an aquifer?

Aquifer = Water-containing layer in the subsurface.

Slide 10 - Slide

Precipitation and fossil water

Precipitation

Infiltration

Groundwater

Porous rock/Aquifer

Impermeable layer

Aquifer: waterhoudende laag in de ondergrond.

Slide 11 - Slide

HW GEO:

Complete assignments 1, 2 and 3 of 3.2 on pages 128 and 129

Slide 12 - Slide

3.2 Water in balance

Part 2

Slide 13 - Slide

Why is useful precipitation often small in warm and dry areas?

Slide 14 - Slide

Answer: Much of the precipitation that falls evaporates immediately.

Slide 15 - Slide

Why is precipitation infiltration less effective today than in the past?

Slide 16 - Slide

Answer:

- deforestation

- expansion of the built-up area
(urbanisation)

Slide 17 - Slide

Precipitation and fossil water

Precipitation

Infiltration

Groundwater

Porous rock/Aquifer

Impermeable layer

Aquifer: waterhoudende laag in de ondergrond.

Slide 18 - Slide

Sustainable water management

Slide 19 - Slide

What do you think uses the most water?

A People who use water when showering and drinking

B Farmers who use water for crops and animals

C Hoensbroek swimming pool

D Water Show Las Vegas

Slide 20 - Slide

The correct answer is: B

But still..

Slide 21 - Slide

We have less and less fresh water...

https://npokennis.nl/story/632/waarom-dreigt-een-drinkwatertekort-in-nederland

Slide 22 - Slide

Non-renewable water:

runs out

Renewable water:

doesn't run out

Slide 23 - Slide

Slide 24 - Slide

Renewable

Non-renewable

Slide 25 - Quiz

Renewable

Non-renewable

Slide 26 - Quiz

Water management

If you, as a country, mainly use renewable water, you are practicing sustainable water management.

Slide 27 - Slide

Sustainable water management is:

Only renewable water is used.

Only non-renewable water is used.

Slide 28 - Quiz

Slide 29 - Video

HW GEO

Ex 5 and 6 from 3.2 on page 130 and 131

Slide 30 - Slide

3.2 Water in balance

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