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.

Explore the craters, maria, and highlands on the surface of the Moon! In this fun science project you'll create a 3-D model of the moon using paper mache.

Examine the influence of the phase of the moon on moisture capillarity in garden soil. Measure and record the depth at which water is first detected.

The moon doesn't produce its own light, so why can we see it shining in the sky? Learn about reflection and planetshine in this fun and easy science project!

In this science fair project, students evaluate if the phases of the moon affect the way people feel.

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.

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!

Science fair project that demonstrates the different phases of the moon by physically representing them with construction paper and a shoebox

The objective of this project is to evaluate whether a top will spin at different rates during different phases of the moon.

Calculate the mass of the Earth using the sidereal and calendar period of the Moon and Newton's Law of Universal Gravitation in this physics science project!

Become familiar with ratios and learn how to measure the diameter of the Sun and the Moon in this fun science fair project idea.

What is a barycenter? Kids learn how gravity and mass influence the orbit of binary systems like planets and moons or stars and planets in this cool experiment.

Check out this fun science fair project idea for 1st grade: a solar eclipse model that demonstrates total, partial, and annular solar eclipses.

This experiment will explore the possibility of a connection between lunar cycles and how humans are affected.

Science fair project that explains and demonstrates the parallax principle.

This science fair project idea examines the distance a person travels on an average day and to relate that to an understanding of the size of the Earth.

Demonstrate the relationship between mass, volume and density. Measure displaced water, and weigh object to calculate mass and density.

The purpose of this science fair project is to investigate whether we can simulate how craters are formed and predict their size and shape.

How is NASA able to launch something into orbit around the Earth? Learn about the relationship between gravity, speed, and orbit in space in this cool project!

Do heavier objects fall faster than lighter ones? Students learn the answer by watching the effect gravity in a vacuum has on a coin and a feather.

Science fair project that determines whether mass and weight are the same or different.

In this science fair project, students evaluate if astrological signs provide clues about people's personalities.

Science fair project that determines whether moths are attracted to one color of light more than others.

A math project teaches students to use a clinometer to gauge the height of very tall objects like trees & to think of better ways to measure how high they are.

Young physicists learn about apparent weightlessnessâthat weird sensation you sometimes feel in elevators, turbulent airplanes, and roller coasters.

Measure the speed of the earth's rotation using protractors and meter sticks. This science fair project measures the angle of the sun in relation to earth.

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

Build a magnetic linear accelerator using a ruler, neodymium magnets, and small metal balls in this fun science fair project exploring magnetic propulsion.

Saturn is the ringed planet in our solar system, a gas giant with rings made of ice and dust. Let's make a cool scale model with an old CD and some glitter!