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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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Kids will make a beautiful rainbow in a jar and learn what enables different types of liquids to remain distinct in separate layers.
Rainbow in a Jar
Weather and Climate
Second Grade
The objective of this free science fair project is to examine the way in which the phases of the moon affect circadian patterns in mammals.
Do phases of the moon affect circadian patterns in mammals?
Astronomy
Middle School
In this science fair project, you will make a model of what scientists in the past thought the universe looked like that is geocentric (Earth-centered).
Model of the Universe
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 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
In this science fair project, students make their own rain gauge to measure rainfall.
DIY Rain Gauge
Weather and Climate
Fourth Grade
This project concerns activity happening millions of miles away, on the sun.
Sunspots: Calculating the Rotation Period of the Sun
Astronomy
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
In this science fair project, you'll make a 'ghost' appear in a test tube, and learn about what happens when hot water and cold water interact.
The Ghost in the Tube
Weather and Climate
Elementary School
In this science fair project, kids measure how weather conditions affect how fast a puddle evaporates.
How Do Weather Conditions Affect How Fast a Puddle Evaporates?
Weather and Climate
Kindergarten
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
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
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
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 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

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