In this cool project, create a lighted, scale model of the different layers of the Sun, including the core, radiation and convection zones, and photosphere.

Learn how to tell time by the sun with this cool science fair project idea that tracks how the accuracy of a sundial changes over time.

This science fair project idea investigates if heat from direct sunlight is hotter than heat from reflected sunlight.

Many ancient cultures used the rising or setting sun to create calendars. Observe the setting sun once a week to come up with your own solar calendar!

How do you tell time without a watch? Use the sun! This simple activity will show your child how to build his own sundial.

This science fair project idea examines whether the colors of the spectrum respond differently in the thermal aspect when radiated by the sun.

Prove that the Earth is not flat. The objective of this science fair project is to measure the angle of the sun and calculate the circumference of the Earth.

This science fair project idea discovers if an artificial light source will yield the same plant health and growth rates as light from the sun.

Take advantage of the spring and summer sun in this arts and crafts activity that has your learner creating pretty flower prints.

How do the phases of the Moon and gravity cause spring tides and neap tides? Does the Sun play a role in the tides? Figure it out in this fun science project!

What cause the phases of the moon? Make a model to see how the positions of the Sun, Moon, and Earth cause the crescent, gibbous, quarter, full, and new moon.

This science fair project idea recreates the movement of planetary bodies in order to learn why they sometimes appear to move backwards.

This kinesthetic learning activity will help your fourth grader get a firm grasp on the immensity of the solar system.

examine how passive solar heating works, measure temperature in a parked car on a sunny day. ways to use passive solar heating as an alternative, energy

Recreate the fantastic phenomena of solar eclipses with your child using just a flashlight, a quarter, and her very own face!

In this free science fair project, learn how to separate salt from water using heat. A great science project for elementary school kids.

In this fun science fair project, make two different scale models of our solar system using Astronomical Units and planets' relative size!

Introduce your fourth grader to the concepts of solstices by observing the length of her shadow on the shortest day of the year, compared to other solstices.

What causes the seasons to change? Kids find out by modeling the earth's tilt using a globe, flashlight and graph paper in this cool science fair project idea.

This interdisciplinary card game will have your third grader working on math facts as he travels through the solar system!

This science fair project idea explores whether a sundial is as accurate as an atomic clock when telling time.

In this science fair project, students focus sunlight with a magnifying glass and trap shorter waves to melt ice.

This science fair project idea examines whether plants are still able to grow normally if they are turned upside-down.

Science fair project which measures the shadow cast by a meter stick at various times in order to predict the circumference of the earth.

In this fun experiment, we'll find out how color affects heat absorption!

In this free science fair project, build a star clock and learn how to tell time on a clear night by observing the big dipper!

This science fair project idea researches how your choice of clothing affect how hot or cool you feel during the day.

We all know that the Moon has different phases, but it can be hard to figure out why. Try this activity to see how the Moon's phases really work.

Make a spring collage with your child to get them outside and those creative juices flowing!

This fun experiment provides a concrete and visually striking illustration of photosynthesis.