Check out the environmental science fair projects listed below. Use these ideas as a stepping-stone towards your own great science fair project.
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Water Quality

• Compare how different commercial water filters purify and filter water.
• Design and build your own filtration system.How does it perform compared to commercial standards.
• How do different filter media perform - sand, grit, soil.
• Investigate the effect of water impurities on plant growth. Try different washing up liquids or detergents.
• Investigate the effect of water impurities on algal growth. Try different washing up liquids or detergents.
• Compare biodegradability of different packing materials.
• Design and build a water filtration system.
• Investigate a system for sorting garbage before it goes to the landfill.
• Can magnets be used to remove metal?

Geology: Soils & Rocks.

• Compare erosion of different soils due to wind and rain.
• Compare the physical characteristics of different rocks. How well do they support different loads (weight) or resist impact damage?
• Does acid rain influence soil structure?

Weather.

• Compare the weather experienced in your local area. Is it influenced by hills, lakes or buildings?
• Compare the weather with factors such as temperature or air pressure.
• Does the weather affect animal or human behavior?
• Measure annual weather patterns over many years using tree ring data (dendochronology).