In this science fair project, students use the streak test to tell minerals apart from each other.

Discover whether cold or hot water from the faucet will boil faster on the stove.

Test whether plants can grow without sunlight and water.

This science fair project creates a visual model of whatâs happening to sound waves as a car approaches and then leaves.

This science project uses Mohsâ Hardness Test to show kids how to compare the hardness of different types of minerals.

This science fair project idea demonstrates that light travels in straight lines and experiments with reflecting light.

This science fair project idea determines the most effective method of preserving food.

This science experiment tests whether warm or cold water works best in making cut flowers last longer.

This is a fantastic and easy science experiment where kids will learn about elasticity by testing how high bouncy balls of different materials can bounce.

This science fair project idea produces sounds by creating vibrations using different objects.

Have your kid determine if a goldfish can be conditioned to expect food the same way Pavlov's dogs did with this fascinating science fair project.

This science fair project idea explores how the shape of a boat affects its density and how much weight it can float.

This science fair project idea explores whether the process used to dry the beans we eat for food renders them unviable.

This science fair project idea investigates how color affects temperature.

Examine the effect of pressure on carbonation in soda.

Have you ever seen fruit decay? Find out if a fruit will rot faster if you open it versus leaving it untouched!

This science fair project idea investigates how optical distances change the apparent size of an object as seen through a magnifying lens.

This science fair project investigates why the number of visible stars changes from place to place.

In this science fair project, students create their own miniature salt flats at home.

This science fair project idea determines if crystals will absorb food dye and if colors will mix by the process of diffusion.

Design a survival kit. Brainstorm various survival scenarios. Address basic human requirements and natural resources. Describe each tool as well uses.

This science fair idea project identifies the active ingredients in soap and experiments with the properties of soap.

Examine which metal conducts more heat by boiling water in 3 pans made of aluminum, copper, and stainless steel.

This science fair project idea compares biodiversity between drops of water.

Ever wondered how a plant drinks water? This science project will teach you how and help you create a beautiful floral display!

Stories change as you retell them. The objective of this science fair project is to demonstrate how information gets interpreted, distorted and changed.

Science fair project that examines how to grow bacteria in a controlled setting, using simple materials from around the home.

In this experiment you observe and determine how well your cat uses his whiskers to navigate through a maze.

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.

What are buttress roots? In this fun science project, make a model of a rainforest tree and learn how they help trees survive in the tropical rainforest!