Play with balance and simple engineering as you hurry to create a sturdy rock tower.

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

This science fair project idea demonstrates how air resistance contributes to denser objects falling faster than less dense objects.

Examine how a battery can be made from everyday materials.

Study how liquids separate into layers by creating a liquid gradient, different density liquids separate into layers in a graduated cylinder.

This science fair project idea builds models of various types of bridges and then determines which bridge design is the strongest.

This science fair project idea examines various dead zones and investigates the cause and how it can be fixed.

This science fair project idea explores if objects dropped from a high distance will equal a greater impact force than the object dropped from a low distance.

Check out this fun and easy 4th grade science fair project idea that tests how gravity induces positive and negative geotropism (gravitropism) in bean plants.

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