Water Questions

1.(Q) What percentage of the world's supply of water is fresh water?
(A) 2.5%

2.(Q) Where is the world's supply of freshwater found?
(A) In ice, rivers, lakes, the atmosphere and ground water.

3.(Q) Even though the supply of fresh water is abundant it is still a problem. Why?
(A) We do not capture enough rain water.

4. Observe the map of world average annual precipitation (opposite).
a)(Q) Describe the changes in rain fall that occur as you move from the southern to the northern tip of Africa.
(A) The land starts with a low amount of rainfall, then in the centre of Africa there becomes more rainfall and up at the northern tip there is again, little rainfall.
b)(Q) Describe the changes in rainfall that occur as you move from the western to the eastern tip of Australia along the Tropic of Capricorn.
(A) For two thirds of the way rainfall is scarce, but as you reach the eastern side rainfall is more common caused partly by the Great Dividing Range.

5. Observe the map above of water availability per person.
a)(Q) Which parts of the world appear to have a large amount of water available per person?
(A) The northern end of continents seem to have the most water per person.
b)(Q) Which parts of the world appear to have a small amount of water per person?
(A) The northern end of Africa seems to have the lowest water per person rate.

6. Observe the diagram of water use.
a)(Q) What are the main uses of water?
(A) Agricultural and industrial uses are the two main uses of water.
b)(Q) Which uses have increased the most over the last century?
(A) Agriculture and Industrial uses are the two water uses that have increased the most over the last century.