In this science fair project, students discover how sedimentary layers form as sediments like mud, silt and sand settle over time.

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

Science fair project examining barometric pressure, and how it can be used to predict the weather. How does atmospheric pressures relate to weather conditions?

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.

In this activity, your child will make her own "quicksand" to better understand how a substance can be both fluid and solid at the same time.

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.