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

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

In this experiment you will replicate the mummification process by making a hot dog mummy.

The objective of this science project was to build a model of a volcano and observe reaction between different substances, including baking soda and vinegar.

How does dishwashing liquid work? Kids discover the chemical mechanism behind cleansing power in this easy science fair project idea.

This science fair project examines how seeds hitchhike on animals and clothing.

Study the life cycle of the common blowfly as it relates to forensic investigation. Record the first time you see flies, maggots, and eggs.

Science fair project that determines whether lettuce that is harvested gradually yields more produce than lettuce that is harvested all at once.

In this project children practice the scientific method while playing with puffy paint.

Step into the fantastic world of colors with a project that explores what shade you -- and your friends -- like best.

Kids will build a turtle habitat in order to observe the climate preferences of this cold-blooded reptile.

Can you imagine a sky filled with bright, colorful bubbles? Make this whimsical scene come alive with bubble science!

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

This experiment challenges students to forecast the weather based on the surrounding areas' weather.

Kids will explore the corrosiveness of soda in this cool science fair project by leaving pennies submerged in soda overnight.

Learn about the layers of the Earth and make a model! Create a earth layer book, cake, or clay diagram.

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

Science fair project that examines the different types of precipitation, evaluates the density of snow and calculates the ratio of snow-to-liquid.

This classic children's game demonstrates how sound travels through air vs. through a solid.

This fun experiment provides a concrete and visually striking illustration of photosynthesis.

The objective of this science project is to determine the length of time for different seeds to germinate.

In this experiment, students will create their own version of coquina, a sedimentary rock thatâs formed by seashells and sand, cemented by seawater minerals.

This science fair project idea investigates which objects float and sink in honey, water, and oil.

This science fair project teaches about mold. Students will test different foods to see which grow mold the fastest.

What is surface tension? Kids will discover how water-skating insects use surface tension to keep from sinking by making a model water walker.

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

Find the North Star, and measure your latitude! The purpose of this science fair project is to find latitude and learn about geographic locations.

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

In this free science fair project idea, we learn about surface tension and how it can support mass—in this case, a floating paper clip.

This science fair project idea investigates emulsifiers that allow oil and vinegar to mix.