Determine whether butterflies like to drink sugar water, salt water, or plain water.

Will increasing the amount of salt in water effect how slow or fast the water freezes?

Most people assume that cold water freezes more quickly, but could that be false? Does hot water freeze faster than cold water? Let's find out!

Chlorine and chloramine are added to our tap water to kill harmful microorganisms. What is the best way to filter these disinfectants in your drinking water?

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.

Show your fifth grade scientist how to create a siphon using two buckets, plastic tubing, and water. Watch her astonishment as the water travels uphill!

This science fair project idea demonstrates that plants give off water.

Science fair project that compares the freezing temperature of salt water and freshwater in order to learn about supercooling and condensation nuclei.

Examine whether distilled water, spring water, or regular tap water yield faster plant growth.

This experiment that explores water and air pressure will amaze your fifth grader as it appears that a single card is holding water in an upside-down glass.

Here's a fun science experiment that's refreshingly tasty too! Turn regular water into a tasty treat perfect for consuming on a hot day.

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

Learn with makes water molecules work with this fun and easy science activity!

Using an empty tennis ball can and a swimming pool, you will determine if it's possible to have a conversation under water.

How does water pressure change with depth? Kids learn how pressure works underwater with this cool and easy demo.

Here's an interesting activity that will enable your child to make his own magnifier out of a drop of water

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

In this science project, learn about water transport in plants and make a beautiful dyed floral arrangement with cohesion, adhesion, and xylem tubes!

Science fair project which determines if plants really do need water to grow, or whether they just need to be kept wet.

Test whether plants can grow without sunlight and water.

Have your child kick off their summer vacation by making a miniature water slide!

Find out which type of sponge holds the most water.

Help your child understand surface tension by showing them how they can create a "skin" on top of water.

Discover whether a metal will expand under hot water.

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

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

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

What heats up fasterâwater or soil? 5th grade students test the specific heat of water against the specific heat of sand in this great science fair project.

This simple "how to make a water wheel" activity makes physics come alive for your child by demonstrating how different kinds of energy work.

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