Term 4

Question 1

Give 4 examples of what we use water for at home.

Answer 1

1. Bath or shower
2. Flush Toilet
3. Brush Teeth
4. Water garden
5. Cooking
6. Drinking water

Question 2

Name and explain other uses of water

Answer 2

1. Farms - irrigation (water is taken from the river or dam)
2. Factories - example 1 tyre uses 200,000 litres of water
3. Making electricity - Power stations
4. Mine - to cool the workers down and to get metal out of the rock
5. Recreation - towns use water for parks, swimming pool and gardens

Question 3

What two types of water are found on earth?

Answer 3

Salt and fresh water

Question 4

How does water get underground?

Answer 4

A lot of rain soaks into the land and it is stored under ground.

Question 5

What are wetlands?

Answer 5

When the underground water lever rises and reaches the earths surface.

Question 6

Explain rivers and streams

Answer 6

When underground water comes to the surface as a natural spring

Question 7

What is a lake?

Answer 7

A large natural area of water on the earths surface.

Question 8

Why is it important for us to store water?

Answer 8

Not all areas have rain all year round so we store water for the dry times.

Question 9

name and explain 3 ways of storing water.

Answer 9

1. Dam - A dam is a lake made by humans. Farmers make dams for when it is dry.
2. Water tanks - rain water flows off the roof through pipes into a tank. People use it in homes when it is dry.
3. Buckets and pots - Some people collect water from a river or communal tap. They use buckets and pots to store the water they collected.

Question 10

Explain how water gets into our taps

Answer 10

The water travels through pipes from the reservoir. Town water is stored in a reservoir.

Question 11

What are the 3 stages of cleaning water at the water works?

Answer 11

1. Settling tank
2. Filter bed
3. Chlorination tank

Question 12

How is water stored in town?

Answer 12

Reservoir

Question 13

How does water get polluted?

Answer 13

PEOPLE- washing clothes, pooh, , animals defecating, FACTORY - uses water in production and the used water often has poison
FARM WASTE - artificial fertilizer is sprayed onto crops to kill insects and when it rains, the poison washes into the river
RUBBISH AND DETERGENTS

Question 14

Explain sewage and reccling

Answer 14

water from our bath - grey water - is sent to the water works for purification
water from the toilet - black water - is sent to the sewer and is put back into rivers and the sea