Preparation for pg.227, no. 1-6

1. What percentage of the world's supply of water is fresh water?

Only 2.5% of the Earth's water is fresh. 

2. Where is the world's supply of fresh water found?

Fresh water is found in ice on land, groundwater, soil, atmosphere, rivers and lakes.

3. Even though the supply of fresh water is abundant it is still a problem. Why?

It is a problem because water and people are unevenly distributed and some people don't get as much as they would need and want to.

4. Observe the map of world average annual precipitation (opposite).

a) Describe the changes in rainfall that occur as you move from the southern to the northern tip of Africa.

There isn't much rainfall at the southern and northern parts, but there's a lot of rainfall between the southern and the northern tip. There is more rainfall as you get to the middle of Africa.

b) Describe the changes in rainfall that occur as you move from the western to the eastern tip of Australia along the Topic of Capricorn.  

There is more rain at the eastern part of Australia than the western part.

5. Observe the map above of water availability per person.

a) Which parts of the world appear to have a large amount of water available per person?

Mostly the Northern parts. Russia, Canada, Australia, Africa, South America

b)Which parts of the world appear to have a small amount of water per person?

Some parts in Asia, a couple of Northern tips in Africa, the southern tips in Australia and the Middle East

6. Observe the diagram of water use.

a) What are the main uses of water?

Agricultural use

b) Which uses have increased the most over the last century? 

Reservoir losses from evaporation and seepage