1. Water And US

Question 1

What do you use water for in your daily life?

Answer 1

1. cleaning
2. cooking
3. leisure activites
4. drinking
5. Farming
6. Shipping

Question 2

Water is useful in society. Give some examples

Answer 2

1. cleaning
2. putting out fires
3. farming
4. shipping

Question 3

Most of the water we use every day is fresh water. Where is fresh water found?

Answer 3

1. rivers
2. Lakes
3. Glaciers
4. snow mountains

Question 4

Fresh water only makes up ____ of the total amount of water on earth
The rest is salt water, which is ____________

Answer 4

2.5%
Not suitable for drinking

Question 5

Hong Kong lacks natural fresh water resources. Where do we get fresh water from?

Answer 5

1. build reservoirs to collect rain water
2. import water from Dong Jiang

Question 6

How does clean, fresh water reach our homes?

Answer 6

1. untreated water
2. The water goes through sedimentation. Heavy impurities sink and are removed.
3. The water goes through filtration. Light
   impurities are removed.
   **Chlorine is added to disinfect the water.
   **Fluoride is added to protect our teeth.
4. The treated water is stored in header tanks in each district.
5. The water is then pumped to water tanks in building
   6 The water flows into our homes through water pipes

Question 7

Is it safe to drink water directly from the tap? Why or why not?

Question 8

What can help to ensure the safety of drink water?

Answer 8

1. boiling the water before drinking
2. checking water pipes in buildings regularly
3. cleaning water tanks regularly

Question 9

How can we save water ?

Question 10

Fresh water is a ________________. We should not ______ it

Answer 10

precious natural resources

waste