Showing Results for compare with same denominators 2 : Page 3

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

Take a closer look at your furry friend (or the furry friend of a neighbor -- with permission) to discover if communication exists between cats and humans.

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

When you rub a balloon on your head, your hair stands up; but is that true for everyone? Does hair color affect static electricity?

In this science fair project, kids observe the expansion of liquids when frozen and determine if some liquids expand more than others in the freezing process.

This science experiment tests whether warm or cold water works best in making cut flowers last longer.

Test your friends to find out if you can replicate the placebo effect's incredible results.

In this exciting and empowering challenge, your child will construct a bridge using marshmallows and toothpicks!

How does a kazoo, the strings of a guitar, or the speaker of a radio make sound? The purpose of this science fair project is to show how vibration makes sound.

How can we describe the relationship of magnetic field strength vs. distance? Kids will find out with this free science fair project idea.

This recipe makes bubbles that not only blow up nice and big, but do tricks and experiments! How do you do it? It's not a secret, it's science!

This science fair project idea demonstrates how air resistance contributes to denser objects falling faster than less dense objects.

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

This project explores whether plants can live and grow when "watered" with juice, soda, or milk.

Science fair project that demonstrates the effect of detergent pollution on fresh water birds' ability to stay afloat.

Help your second grader observe the phases of the moon, and then let the fun loose: he'll get to chart his observations with marshmallows!

In this activity, your child will be challenged to make a tower using paper cups.

Create a mini plant habitat with your kid to help teach him what it takes to make an ecosystem work.

This project determines whether Styrofoam, paper, or plastic cups are best for preventing ice from melting.

The goal of this evaporation experiment is to learn about how different external conditions affect drying time.

In this cool engineering science fair project, kids learn how to build Hero's engine: an enlightening example of Newton's third law.

This science project teaches young students about germs, bacteria, and the importance of washing their hands. Students will test what is the best way to wash.

Will storing cucumbers and tomatoes in the fridge destroy their unique flavors? Find out in this science fair project idea!

Kids will learn how to make a thermometer to to explore liquid density in this great science fair project. Which liquids are affected by temperature the most?

Teach your child how butter is created by shaking up cream the old-fashioned way.

Help your second grade scientist explore the timely topic of wind speed using a version of the classic Beaufort Scale.