1. SCIENCE 8 Unit 1- Water Systems on Earth
Slideshow 1
Chapter 1 -The water cycle plays a
vital role on Earth
Section 1.1 – The Distribution of Water

2. Section 1.1 The Distribution of Water
There is a tremendous volume of water found on Earth…
HOWEVER…………..
Most of that water is unavailable to terrestrial organisms

3. The Distribution of Water
In the grid on the right
colour 97 blocks green
2 blocks red
1 block blue

4. The Distribution of Water
HOW CAN SUCH A SMALL PERCENTAGE OF AVAILABLE FRESH WATER CONTINUALLY SUPPLY ALL ORGANISMS ON EARTH?
THE WATER CYCLE

5. The Distribution of Water – The Water Cycle
Water on Earth is constantly cycling through periods of solid liquid and gas.
Evaporation – From Oceans, Lakes, Land Plants, Animals etc.
Powered by energy from the sun
Condensation – In the Atmosphere air cools and moisture condenses eventually falling as precipitation (Rain or Snow)
Precipitation that falls on land may be
Used by plants and animals
Run off into oceans, via lakes streams and rivers or as ground water
Evaporate back into the atmosphere

6. The Water Cycle

7. Questions
In Your Notebook Answer Questions 4,6 and 7 from page 13 of your text