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The WATER CYCLE: NATURES WAY OF RECYCLING WATER

You probably already know that water is one of the earth's natural resources. It is a precious resource - one that we need to live. Our bodies must have drinking water to survive. But there are many other important uses for water. Take a moment to think about how many ways you use water. You may have realized that you use water everyday for many, many different reasons. Water is not only used for cooling, bathing, brushing your teeth, washing clothes, flushing the toilet, watering plants and grass, washing cars or even the dog. In other words, water is in great demand!

It may appear that there is more water each time it rains. However, rainwater is actually water that nature has reused through a process called the water cycle. The water cycle is nature’s way of reusing (or recycling) water for further use. As you read more about the water cycle, refer to the diagram. The water cycle consists of three stages: evaporation, condensation and precipitation.

The water cycle starts with the sun. Heat from the sun causes water to heat up until it disappears, or evaporates. You may have seen a similar process while boiling water in a pot. When water boils, steam is created and it raises out of the pot. Just as steam escapes from the pot, so does water from oceans or lakes. As the evaporated water floats into the sky and form with clouds, the air begins to cool down and expand. The cool air condenses in the clouds and becomes very heavy until it cannot stay in the clouds any longer. This is called condensation.

As the water condenses, it becomes heavy until the clouds can no longer support the weight. The water then falls out of the clouds back down to the ground in a form of precipitation. Depending on the temperature outside, precipitation can be rain, sleet, hail or snow.

1. WARM-UP: About how long could you survive without water?

Month
Day
Week
Year

2. Which of the following is one of earth's natural resources?

Cars
CD's
Water
Pollution

3. What are the sources of water within the City of Atlanta?

Sun
Glaciers
Rivers
Iceberg 

4. Since there is an endless supply of water within the City of Atlanta, being a little wasteful is OK.

True
False
Maybe
Sometimes

5. What is natures process for recycling or reusing water?

Motor Cylce
Recycle Cycle
Water Cycle
Ice Cycle

6. The answer to question 6 consists of what three stages?

Evaporation, Fermentation, Condensation
Restoration, Precipitation, Evaporation
Evaporation, Condensation, Precipitation
Elevation, Flotation, Restoration

7. The water cycle starts with the ____ beginning the process of ____________ .

Snow, Meltation
Sun, Evaporation
Moon, Precipitation
Sun, Precipitation

8. The second process of the water cycle is ___________. This occurs when the water in the clouds begin to cool the air around it. The cool air condenses in the clouds and become very heavy until it cannot stay in the clouds.

Condensation
Precipitation
Evaporation
Restoration

9. The final process of the water cycle is ____________. This is when the water falls out of the clouds back to the ground. Depending on the temperature the water may take the form of ___________ .

Precipitation, Cats & Dogs
Condensation, Snow
Creation, Icicles
Precipitation, Snow

10. Our bodies need drinking water to survive?
True
False
Maybe
Sometimes