Presentation is loading. Please wait.

Presentation is loading. Please wait.

15 - 1 The Water Cycle.

Similar presentations


Presentation on theme: "15 - 1 The Water Cycle."— Presentation transcript:

1 15 - 1 The Water Cycle

2 Where did all the water come from?
Early Greeks thought it was supplied by rain and snow Earth’s surface receives 5 times as much water as rivers can carry off Where does it come from? Where does it all go?

3 Movement of Water Two/thirds or 70 % of earth is covered in water
Lakes Streams Oceans Ice Groundwater

4 Water Water is found in living tissues

5 Water Vapor and Clouds Small invisible particles Clouds and Fog

6

7

8 The Water Cycle Constant movement of water between land, air, and water

9 Evaporation Liquid changes to a gas Every year:
500,000 km3 into oceans 86% from the ocean

10 Transpiration Process in which plants and animals release water vapor into the atmosphere

11 Evapotranspiration Total water loss from an area: Evaporation

12 Condensation Water changes from a gas to a liquid
When water vapor become cooler it condenses

13 Precipitation Any water that falls to the Earth Rain Sleet Snow Hail
75% falls in the oceans

14

15 Water Budget Think of your own budget? Precipitation – income
Evapotranspiration and runoff - expenses

16 Determining Factors Temperature Vegetation Wind Precipitation duration

17

18 Drought Evapotranspiration > precipitation

19 Flood Evapotranspiration < precipitation

20 Water Use Each person, every year: 20,890.5 gallons
90% of water used by cities and industry is returned as wastewater

21

22 Conservation of Water Conserve water
Desalination – removing salt from ocean water Expensive

23


Download ppt "15 - 1 The Water Cycle."

Similar presentations


Ads by Google