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Name: Donnavon Williams Date: 8-4-13

Student Exploration: Water Pollution

Vocabulary: Bacterial pollution- Bacteria play a vital role in processes such as decomposition and digestion. Nutrient pollution- Fuels the growth of algae blooms that block sunlight from reaching bay grasses and rob the water of oxygen.
Sediment pollution- Sediment is soil particle that have entered creeks, rivers and lakes.
Toxic pollution- In our environment threaten our rivers and lakes, our air, land, and oceans, and ultimately ourselves and our future. Greenpeace fights back.
Water pollution- Occurs when a body of water is adversely affected due to the addition of large amounts of materials to the water.
Prior Knowledge Questions (Do these BEFORE using the Gizmo.)
Water pollution is the addition of harmful substances to water. Some of these substances are found at home. What household chemicals might be harmful if not disposed of properly? Window spray, bleach, dish soapand etc.
What are some other causes of water pollution? What are some other water pollution causes.
Gizmo Warm-up
The Water Pollution Gizmo™ will teach you about some of the main kinds of water pollution. On the TYPE tab, under Types of pollution, check that Toxic is selected. Read the paragraphs on the right and bottom of the Gizmo. What is toxic pollution? Harmful, chemical contamination in water
What are some examples of toxic pollutants listed in the Gizmo? Paints, gas, battery acid, mercury, and pesticides. Can you think of other examples of toxic substances, not listed in the Gizmo?no

|Activity A: |Get the Gizmo ready: | |
| |Check that the TYPE tab and Toxic | |
|Types of water pollution |pollution are selected. | |