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Others Like “The Reasons for the Seasons”

Science Fair Project Idea
thumbnail Many people are surprised to learn that the season's we experience—winter, spring, summer and fall—have nothing to do with the distance of Earth from the Sun. In this science fair project, you will investigate how the temperature on Earth actually depends on the tilt of Earth's axis of rotation. Read more
EnvSci_p051
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Time Required Short (2-5 days)
Prerequisites None
Material Availability You will need a couple of specialty items: a globe of Earth and a heat lamp. Light from the sun can be used if a heat lamp is not available.
Cost Average ($50 - $100)
Safety Minor injury is possible, so be careful when using the heat lamp.
Science Fair Project Idea
thumbnail Have you ever gone camping, looked up at the stars, and found the Big Dipper? Two stars in the dipper part of this constellation point to Polaris, the north star, which people have used for thousands of years to help them find their way. In this plant biology science fair project, you'll investigate whether plants, like moss, can help you find your way, too. Read more
PlantBio_p043
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Time Required Short (2-5 days)
Prerequisites None
Material Availability You must have access to three lone trees that have moss growing on their bases, and that are not shaded by other trees or buildings.
Cost Low ($20 - $50)
Safety No issues
Science Fair Project Idea
thumbnail Have you ever been annoyed by poor Wi-Fi reception for your phone, tablet, or laptop? Do you wish there was something you could do about it? In this project you will learn how to build a parabolic reflector that you can attach to the antenna of a regular wireless router to help boost its signal. Read more
CompSci_p010
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Time Required Short (2-5 days)
Prerequisites None
Material Availability This project requires a Wi-Fi router and a smartphone, tablet, or laptop with a Wi-Fi connection. You will also need access to a printer to print the parabolic template. See the Materials and Equipment list for details.
Cost Very Low (under $20)
Safety No issues
Science Fair Project Idea
thumbnail How far would you have to travel so that the light of the full sun would provide "daylight" no brighter than twilight on Earth? This project describes a method to verify the inverse square law: how light, sound, electrical signals, and gravity each decrease with distance from their source. When you have finished your experiment, you can use your results to calculate an answer. Read more
Elec_p028
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- Less Details
Time Required Short (2-5 days)
Prerequisites None
Material Availability Readily available
Cost Very Low (under $20)
Safety Minor injury possible—use caution when handling single-edged razor blades.
Science Fair Project Idea
thumbnail Have you ever looked up at the stars at night and wondered how fast they were moving or how far away they were? By studying how the brightness of a star changes with distance, you can answer those questions. In this astronomy science project, you'll create a model of starlight and use a light meter to discover the key relationship between brightness and distance. Read more
Astro_p034
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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
thumbnail Do you like getting something for nothing? Everybody likes getting things for free. How about getting energy and power for free? The Sun sends us free energy every second and all we have to do is collect it. Taking advantage of free energy can reduce our dependence on fossil fuels, which are harmful to our environment. In this science fair project, you will work with a solar panel, which is a collector of free energy, and investigate how varying the angle of the solar panel, and thus the amount… Read more
Energy_p004
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- Less Details
Time Required Average (6-10 days)
Prerequisites None
Material Availability Specialty items required. You need to purchase a small solar panel.
Cost Average ($50 - $100)
Safety No issues
Science Fair Project Idea
thumbnail Have you ever wondered what causes the tides in Earth's oceans? In this astronomy project, you will discover the answer for yourself! You will investigate how the Sun and Moon control tides in Earth's oceans. Read more
Astro_p009
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- Less Details
Time Required Very Short (≤ 1 day)
Prerequisites None
Material Availability Readily available
Cost Very Low (under $20)
Safety No issues
Science Fair Project Idea
thumbnail Would you like some sky vegetables for dinner? How about some fresh-cut roof flowers to put in vases in your house? Around the world, rooftops are being transformed into living green expanses. Besides beauty, rooftop gardens have a number of advantages, including growing food and taking carbon dioxide out of the air while releasing breathable oxygen. But can rooftop gardens also keep your house cooler and lower your energy bill? Try this science fair project to find out. Read more
EnvEng_p026
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- Less Details
Time Required Short (2-5 days)
Prerequisites None
Material Availability Readily available
Cost Low ($20 - $50)
Safety Use caution when using exacto knife.
Science Fair Project Idea
thumbnail What do humans need to survive? We need food, water, and warm shelter. We all need a warm place to live, particularly when it's chilly outside. How do many of us warm our houses or apartments? We depend on fossil fuels to supply gas and electricity to our heaters. But burning fossil fuels to create energy is harmful to the environment. What if there was a way to warm our homes without burning fossil fuels and it was free? In this science fair project, you will build a solar air heater and see… Read more
EnvEng_p028
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- Less Details
Time Required Average (6-10 days)
Prerequisites None
Material Availability Readily available
Cost Average ($50 - $100)
Safety You need to cut cardboard for this project and use paint. Always exercise caution when using a sharp knife and scissors. Paint in an area with good ventilation.
Science Fair Project Idea
thumbnail Do you realize that you are constantly bombarded by particles? You do not feel them, you cannot see, hear, or smell them, but they are always there! These particles — collectively called background radiation — might even travel through you without ever interacting with the molecules in your body. In this science project, you will build your own cloud chamber to prove the existence of background radiation. You will then use your cloud chamber to determine if the background… Read more
Phys_p087
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- Less Details
Time Required Short (2-5 days)
Prerequisites This project requires patience and the ability to sit still and make small scale observations for 20 minutes.
Material Availability Readily available
Cost Low ($20 - $50)
Safety Do not use isopropyl alcohol near an open flame or anything hot.

Dry ice is cold and can damage your skin. Wear protective gloves when handling it.
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