1. The Water Planet Chapter 2 Section 1

2. Water Water covers 70% of the earth’s surface Examples: Streams, Rivers, Lakes, Seas, Oceans, Water Vapor, Glaciers, and the Human Body

3. Human Body The human body is about 60% water

4. Water Vapor Water in the form of gas The earths atmosphere holds water vapor

5. The Water Cycle Water goes from the bodies of water, to the air, to the ground and finally back to the bodies of water again. Water moves constantly

6. The Water Cycle

7. Evaporation The sun’s heat turns liquid water into water vapor, also called humidity. Warm air hold more humidity than cool air. As a result two process occur known as: condensation and precipitation

8. Condensation Because cool air loses its ability to hold humidity, the water vapor changes back into a liquid

9. Precipitation Tiny droplets of water come together to form clouds. The water returns to the earth’s surface Examples: Rain, Snow, Sleet, Hail

10. Water Resources:

11. 1) Freshwater Only about 2% of the water on the earth’s surface is freshwater 80% of that freshwater is frozen in the form of glaciers.

12. Glaciers Giant sheets of ice

13. 2) Salt Water 98% of the earth’s water is salt water. All Oceans 4 Major Oceans: Pacific, Atlantic, Indian, and Arctic