3.1 ppt BNL

• Aardrijkskunde
• Middelbare school
• vwo
• Leerjaar 2

We have dry and wet areas. What is the biggest threat in the world, flooding or drought?

Which country has the biggest water stress (fear for not having enough for its population)?

1. Egypt
2. China
3. India
4. Brazil

Where does most of our fresh water in the Netherlands come from?

1. sea
2. lakes and rivers
3. groundwater
4. rainwater

What is the right order in the water cycle?
Only note the numbers
1 rain-2 condensation - 3 groundwater - 4 evaporation

Long water cycle

Short water cycle

What is the difference between the long and the short water cycle?

1. the long cycle lasts longer in time
2. the short cycle never takes long
3. the long cycle travels via land
4. the water in the short cycle never freezes

What is true?

1. most of the fresh water on earth is frozen
2. most of the salt water is not accessible
3. most of the water we can use is in rivers
4. we now have less water than 50 years ago

Why does a lot of unused fresh water flow back into the sea, even in dry areas?

The end

Time left?

- hand in mm 3.1

- assignments wb 3.1 

(homework for after the spring break)