Search 3rd Grade Science Projects: Page 7

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

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 idea investigates how the height at which a pendulum is released affects the length of time it continues.

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

This science fair project idea investigates how color affects temperature.

This science fair project idea explores how length affects the weight a bridge can hold.

This science fair project idea investigates the ability of different whitening toothpastes to whiten teeth.

This science fair project idea explores substances that cause a bubble to last longer.

This science fair project idea investigates the difference in reaction times between boys and girls.

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

This science fair project idea determines if the size of the parachute will change the rate at which an object falls.

This science fair project idea investigates if webbed feet help a duck (and others) swim.

This science fair project idea investigates how the shape of an object affects drag.

This science fair project idea investigates how a bottom keel helps keep a boat from rocking back and forth.

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

Young scientists will investigate people's preferences for saltiness, and make some inferences about genetics and diet.

Understanding absorption means understanding why certain fibers and materials can absorb water! Kids will see absorption in action in this simple project.

What is persistence of vision? With this hands-on science fair project idea, students will demonstrate this cool and dramatic phenomenon in their own classroom.

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!

Did you even wonder why some rocks are round and smooth while others are broken up into small pieces?

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!

How does salinity affect the point at which water freezes? Kids will find out by performing this cool melting ice experiment.

Kids will learn some cool stuff about chemical reactions by determining what happens when you mix different concentrations of hydrogen peroxide and yeast.

In this classic Ivory soap experiment, kids learn what happens to different types of soap in the microwave, and why!