In this science fair project, students use hot and cold water to simulate what happens when a warm front meets a cold one.

In this science fair project, you'll make a "ghost" appear in a test tube, and learn about what happens when hot water and cold water interact.

Experiment with buoyancy to learn how a submarine rises and sinks in this classic science experiment.

Kids will love making clouds and learning how to make a water cycle model in this fun science fair project idea that explores evaporation and precipitation.

In this experiment we will be determining whether birds prefer certain colors of seed.

Learn how to make marbleized paper with simple everyday ingredients in this fun activity! Your child will learn about oil and water while doing this project.

Science fair project that identifies the differences between soils from different environments and attempts to figure out why those differences exist.

It's easy to plant your own in-home container garden! This planter contains pizza-themed herbs and is a perfect early gardening activity for kindergarteners.

This project demonstrates the correspondence between the volume of water displaced by a submerged object and the volume of the object displacing it.

The objective of this science fair project is to set up a compost bin to convert food scraps and organic waste.

This science fair project idea identifies and understands adaptations in birds.

What keeps a an item cooler, polymer crystals or ice? Find out in this cool science experiment!

Show your child that the simplest ingredients (salt and water) can be used to illustrate the concept of density!

Demonstrate the properties of pressure and surface tension to explain how water can stay inside an upside down glass using cardboard.

In this simple science project, learn about what causes dew and what affects dew formation with a drinking glass, ice, and a soda bottle.

Science fair project that studies how perfumes are made in order to determine how we can capture a scent.

Take advantage of the fact that ink and water don't mix and introduce your kid to suminagashi, a Japanese form of art.

Discover which absorbent material is the best; the Shamwow, paper towels, or cotton towels.

Science fair project that creates fog using bottles of hot and cold water.

In this challenge, students are tasked with creating an insulated cup that will keep beverages colder for longer than a regular cup.

Thermometers are how we measure temperature, and we've all heard the terms "centigrade" and "Fahrenheit" tossed around, but what do they really mean?

Did you ever add salt to pasta? Did it help cook the pasta faster? If not, find out in this science fair project idea.

Glass is see-through, but usually you can still see that it is there. In this experiment, we use baby oil to make glass go completely invisible.

Grow a garden with an environmentally-friendly twist by using plant scraps that usually get thrown away.

Can you dig it? This science experiment isn't for kids who like to keep their hands clean.

This science fair project on testing water hardness is a great introduction to practical chemistry. Test and learn the difference between hard and soft water.

This project analyzes people's emotional responses to images in painting vs similar images in photographs.

Here's a classic celery science experiment that uses celery and food coloring to demonstrate how plants absorb water.

Planning a beach vacation? Here's a cool nature craft you can make in the sand with your child.