Overview – Our earth has been called the water planet. Between two-thirds and three-fourths of its surface is water and the amount today has changed little in millions of years. It just recycles. Scientists believe that all the water that we will ever have is on the earth right now. Whatever amount of water is available to humans and wildlife depends largely on how it’s managed. So, we have a responsibility to conserve water, use it wisely, and protect its quality.
Understand Water Quantity: Use Project Wild “How Wet is Our Planet”. Students/Kids describe the amount and distribution of water on the Earth in oceans, rivers, lakes, ground water, icecaps, and the atmosphere; and make inferences about the importance water conservation and protection.
1. Compare amounts of water on the earth using eye dropper, table spoon, gallon jugs.
2. Estimate personal water usage.
Understand Water Quality: Use Project Wild “What’s in the Water”. Students/Kids identify major sources of aquatic pollution, and make inferences about the potential effects of water quality on aquatic wildlife.
Four forms of pollution are discussed:
• Chemical pollution: introduction of toxic substances into an ecosystem (e.g., acidic precipitation or contamination of water supplies by pesticides).
• Thermal pollution: varying temperatures above or below normal conditions (e.g., power plant turbine heated water).
• Organic pollution: oversupplying an eco-system with nutrients (e.g. fertilizer).
• Ecological pollution: stresses ordinarily created by natural processes.
1. Diagram types of water pollution.
2. Learn to about water testing and monitoring.