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Science Fair Project Ideas

Find the astronomy and weather and climate science fair project ideas you're looking for. Many different science fair projects are available for you to browse through and get ideas for your own science fair project.

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What is a hygrometer? It's a device that measure humidity. Learn how to make a hygrometer in this free science fair project idea. Great project for kids.
Making a Hygrometer
Weather and Climate
Middle School
What affects the phases of the moon? In this free science fair project, experiment with how the position of the sun, moon, and earth affects the moon phase.
Determine How the Positions of the Sun, the Moon, and Earth Affect Moon Phases
Astronomy
Middle School
Become familiar with ratios and learn how to measure the diameter of the Sun and the Moon in this fun science fair project idea.
Measuring the Diameter of the Sun
Astronomy
Middle School
What is an anemometer? It's a device use to measure wind speed. Learn how to make an anemometer in this free science fair project.
Building an Anemometer
Weather and Climate
Middle School
In this science fair project, students use hot and cold water to simulate what happens when a warm front meets a cold one.
When Air Masses Collide
Weather and Climate
Middle School
Here is a fun science fair project idea for elementary school that explores and demonstrate a total and partial solar eclipse when the Moon covers the Sun.
Shadows: How Can the Moon Cover the Sun?
Astronomy
Elementary School
In this free science fair project idea, we learn how astronomers determine the shape of asteroids by analyzing their rotation.
Space Rocks: How Can Astronomers Determine the Shape of an Asteroid?
Astronomy
Elementary School
How do clouds form? Can clouds be made manually? In this free science fair project, you can make clouds using simple materials.
Making Clouds
Weather and Climate
Middle School
Check out this cool elementary school science fair project idea which helps students explore the reasons for the brightness of planets and the moon in the sky.
Brighter: Why are Planets and the Moon so Bright in the Sky?
Astronomy
Elementary School
Which is bigger - the sun or the moon? Why do they appear to be the same size in the sky? Do this free science fair project and explore apparent size.
Determine Why the Sun and the Moon Appear to Be the Same Size in the Sky
Astronomy
Middle School
Where is the Polaris - the North Star? Can you use the north star to find out the latitude of your home? Do this free science fair project and explore.
Use the North Star to Determine Where You Live on Earth
Astronomy
Middle School
In this free science fair project, explore the phases of Venus by modeling the phases of Venus as a morning and evening star.
Phases of Venus: Changes in Shape and Size
Astronomy
Middle School
The purpose of this project is to determine if there are fluctuations in the rising and the setting of the sun and the position of the earth as it rotates.
How Earth's Wobble Affects the Rotation of Earth?
Astronomy
High School
In this science fair project, students make their own rain gauge to measure rainfall.
DIY Rain Gauge
Weather and Climate
Fourth Grade
Science fair project that examines the different types of precipitation, evaluates the density of snow and calculates the ratio of snow-to-liquid.
Snow to Liquid Ratio
Weather and Climate
Second Grade

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