Water Questions 1

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

2.5 percent is fresh water of all the water on earth.

2. Where is the world's supply of fresh water found?
2 percent in ice on land, 0.49 percent is ground water, and 0.01 is in the air, rivers, and lakes

3. Even though the supply of fresh water is abundant it is still a problem. Why?
Water is a problem because it isn't spread out evenly.

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.

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

Near the bottom of Africa, it is pretty dry. As we move closer to the equator, we get more rainfall. On the equator, we get the most yet. Then as we move away, it becomes more dry.

Near the eastern coast of Australia, it is really really dry. As we move inland, it doesn't change that much. But as we approach the west coast, we get the most rain yet.

5. Observe the map above of water availability per person.
Which parts of the world appear to have a large amount of water available per person?
Which parts of the world appear to have a small amount of water per person?

 Central Africa, Northern and Central South America, Northern Europe and Asia, Northern Australia

Central and East Asia, USA, most of Europe, Northern, Western and Southern Africa

6. Observe the diagram of water use.
What are the main uses of water?

Which uses have increased the most over the last century?

Agricultural and Industrial

Agricultural