4th graders construct an ocean food web to learn about consumers and trophic levels, food webs, and food chains in this cool ecology science fair project.

Science fair project which simulates the global conveyor belts on a small scale, and observes the effects of wind, density and temperature on water movement.

Why doesn't the ocean freeze? Students answer this question by simulating the chemical composition and temperature of arctic waters in their own home.

Kids will discover the meat science behind the meat they eat, and find out how to use safe chemistry to make meat more tender.

With Halloween right around the corner, find a way to use your brain and reward your tummy with a new type of science -- candy science!

The goal of this golf science fair science fair project is to determine whether the temperature of a golf ball affects its elasticity and its rebound.

In this windmill model science project, you will build a windmill to learn about wheel-and-axle machines and how these simple machines are used to do work.

This easy and inexpensive paper towel science project introduces kids to important physical concepts like cohesion, adhesion, and capillarity.

In this plastic wrap science fair project, you'll learn about polymer permeability and find out which plastic wrap keeps food from dehydrating best.

In this air pressure science experiment with a balloon and a jar, children will use heat to create a partial vacuum and suck a balloon into a jar.

How greasy are your potato chips? Students will use a reliable method to quantify greasiness and compare different brands in this great science fair project.

Why do plants wilt? Kids will learn to think critically about what environmental factors affect plants, and what plants need to survive.

Can a toy car determine the strength of a magnet? In this cool magnet science fair project, young scientists will learn how to measure the strength of a magnet.

Do plants get crowded? Have your curious kid investigate how plants respond if they're forced to grow together in a confined space.

When you cut a flower to put into a vase, it'll eventually wilt, even with water and sunshine. But is there another scientific secret to keeping flowers fresh?

In this experiment, you'll make a seafloor spreading model to learn more about how plate tectonics work and create mid-ocean ridges.

How would you dry your wet clothes if your dryer didn't work? Find out with this fun experiment!

What makes your shadow dance around all day? Let's play detective and find out why that sneaky shadow never stays in one place for long.

Start your toy engines -- this is going to be a fast and friction-filled race!

Spiders don't go to grocery stores or fast food chains to get their food -- they set up traps and wait for their food to come to them!

Why does purple cheese look nasty? Because color plays a big part in how we perceive the taste of different foods. Are birds just like us in this respect?

How do organic materials become soil? This science experiment measures what materials biodegrade.

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

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

There are many benefits to bugs and insects. This science project shows how cockroaches, termites, and other critters benefit our planet.

This science project allows students to study the psychology of happiness.

This super fun science project, perfect for young children, combines crafts, dressing up as animals, outdoor play, and life science learning.

The goal of this science fair project is to discover the science behind carbonated soft drinks and apply this knowledge to create a new one.

The purpose of this science fair project is to build a basic radio.

The objective of this science fair project is to analyze the effects of salinity and temperature on water.