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Others Like “Smart Watering: Adjusting Your Sprinklers for Optimal Soil Moisture”

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Science Fair Project Idea
Do you have any great-grandparents who lived through the Great Depression in the United States during the 1930's? If so, they might have stories to tell about terrible dust storms that blackened the skies, from the Midwest to the east coast. Severe drought was a factor in causing this "Dust Bowl" era, but decades of poor farming practices contributed to it, too. In this environmental science fair project, you'll learn about farming methods that help keep dirt from drying up into dust, and help… Read more
EnvSci_p052
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Time Required Average (6-10 days)
Prerequisites None
Material Availability Readily available
Cost Low ($20 - $50)
Safety No issues
Science Fair Project Idea
Water is a valuable resource, and water shortages are a serious problem in many parts of the world. The problem can be made worse by people who waste water; for example, by watering a garden or using sprinklers on their lawn (or a farmer taking care of an entire field) when it has rained recently or the soil is already moist. How can you help conserve water and prevent such waste? One way is to build an electronic soil moisture sensor. This project will show you how to build a circuit that… Read more
Elec_p066
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Time Required Average (6-10 days)
Prerequisites Familiarity with using a solderless breadboard, or willingness to learn.
Material Availability Specialty electronics items are required. A kit is available from the . Time required includes shipping for the kit.
Cost Average ($50 - $100)
Safety Short circuits can get very hot. Double-check all of your wiring before you connect the 9 V battery.
Science Fair Project Idea
Have you ever looked around and noticed the plants and animals that grow in your neighborhood? Have you ever visited friends in another part of your city, state, or even another part of the country? Have you noticed whether the plants and animals where they live are similar to those growing near you? What would it be like to live where they do? Why do certain plants and animals grow in one area, but not in another? In this science fair project you will learn about biomes and how different… Read more
EnvSci_p046
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Time Required Long (2-4 weeks)
Prerequisites None
Material Availability Readily available
Cost Low ($20 - $50)
Safety Minor injury possible. Adult supervision is recommended during knife and scissor use.
Science Fair Project Idea
Do you or your family have a lawn, garden, or potted plants that you water regularly? Irrigation—or the artificial application of water to plants and landscaping—accounts for over two-thirds of the world's freshwater consumption (U.S. Geological Survey, 2016)! While that total includes farms, in the United States landscape irrigation still accounts for almost one-third of residential water use. As much as half of that water is wasted due to inefficient watering methods (WaterSense,… Read more
PlantBio_p050
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Time Required Very Long (1+ months)
Material Availability For your convenience, a kit is available for this project from the .
Cost Average ($50 - $100)
Science Fair Project Idea
What covers less than 10% of the Earth's surface, yet is a vital natural resource for terrestrial life? What filters ground water and supports most of our food production, not to mention the production of building materials and paper? The answer, often overlooked, is: soil. With this project you can get all the dirt on soil formation, soil horizons, and the composition of different soils. Read more
EnvSci_p011
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Time Required Average (6-10 days)
Prerequisites None
Material Availability Readily available
Cost Average ($50 - $100)
Safety Minor injury possible
Science Fair Project Idea
Divide a part of your garden into two equal plots, with each plot receiving equal amounts of sun. Cover one plot with two inches of organic mulch, such as compost or ground bark. Leave the other plot uncovered. Use the same amount of water for each plot for two or three weeks. At the beginning of the experiment, and at one-week intervals, dig down and check the soil in each plot for moisture content. Which plot holds water better? Which plot shows better plant growth? (McCausland, 2006) Read more
EnvEng_p021
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Time Required Very Long (1+ months)
Science Fair Project Idea
Have you ever planted a garden? It is a real pleasure to see a garden where all of the plants lie in neat rows and are healthy and thriving. Plants need sunlight and nutritious soil to grow and be healthy, right? Not always! Hydroponics is the science of growing plants in nutrient-rich water. Does it work? Try this project and see for yourself! Read more
PlantBio_p045
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Time Required Very Long (1+ months)
Prerequisites None
Cost Average ($50 - $100)
Safety Use gloves and safety goggles when handling chemicals. Adult supervision is required.
Science Fair Project Idea
Did you know that soils can be alkaline, neutral, or acidic? Most plants grow best in soil near neutral pH, but some plants prefer slightly acidic and others slightly alkaline soil. What is the pH of the soil in your garden? What happens to the pH of water that comes in contact with soil? In this science project you will get to find out. Read more
EnvSci_p013
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Time Required Average (6-10 days)
Prerequisites None
Material Availability Readily available
Cost Average ($50 - $100)
Safety No issues
Science Fair Project Idea
Interested in helping the environment, and don't mind getting dirty? In this project you get to mix it up with earthworms, soil, and various types of organic kitchen scraps. The basic idea is to set up small earthworm colonies to compost different types of food waste. You test the soils in each type to see how diet affects both the earthworm population and the nutrients they put back into the soil. This project takes a little time, but it's worth it. You'll help the environment and learn… Read more
EnvSci_p041
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Time Required Very Long (1+ months)
Prerequisites None
Cost Average ($50 - $100)
Safety No issues
Science Fair Project Idea
Have you ever had to dig a hole in really hard soil? It is a lot of work! In this science project you can make an instrument to test the soil and find out how compacted it is, before you dig! Read more
Geo_p010
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Time Required Very Short (≤ 1 day)
Prerequisites None
Material Availability Readily available
Cost Very Low (under $20)
Safety No issues
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