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Showing Results for "why is the sky blue"

Every four years something funny happens with our calendars -- we add a day! Why do we do this? Discover the science behind leap year.

why is there a leap year

Why is There a Leap Year?

Science fair project that examines what causes thunder and why a thunderclap sounds so loud. How is lightening related to the creation of sound waves?

a thunderous sound

A Thunderous Sound

Put your second grade scientist to work this Fourth of July with our colorful "liquid fireworks" project!

firework science

Firework Science

Get your hands on a concoction that breaks the rules about what's a solid and what's a liquid.

make a fistful of slime

Make a Fistful of Slime!

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 a kazoo makes sounds

How A Kazoo Makes Sounds

Energy is an essential part of our daily lives, but the resources that power the Earth are being threatened. In this lesson, students learn about renewable and non-renewable resources, including those that need protection.

renewable and nonrenewable energy

Renewable and Non-Renewable Energy

How does the size of a vibrating surface affect the pitch of a drum? Learn about drum size and pitch with this easy science fair project idea.

drum size and pitch

Drum Size and Pitch

The science of matter becomes as fun as it is educational when George gets in the mix! After watching Curious George work with his 'floppafication' pot, students will learn about matter and force.

curious science with curious george

Curious Science with Curious George

Ready for takeoff! Make science fun and teach about levers and fulcrums as your child sends buttons flying.

button launcher

Button Launcher

Your child might have noticed how bubbles quickly lose their colors and pop. Check out this creative way to make those bubbles last longer.

beautiful bubble iridescence

Beautiful Bubble Iridescence

Is it solid or liquid? Create oobleck and witness the amazingly weird oscillation between the two!

oobleck science solid or liquid

Oobleck Science: Solid or Liquid? 

Wool can absorb 1/3 of its weight in water, while still keeping the body warm. She can test this theory by performing a scientific sock comparison!

sock science

Sock Science

Introduce your child to the world of motion and physics with a bit of marble play inspired by Sir Isaac Newton!

marble physics

Marble Physics

Before your treat your child (and yourself!) to a yummy snack, help her learn a little about Sir Isaac Newton's First Law of Motion!

spinning eggs

Spinning Eggs

This classic children&#39;s game demonstrates how sound travels through air vs. through a solid.

how sound travels through air and solids

How Sound Travels Through Air and Solids

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

make your own butter

Make Your Own Butter!

Air invisible; it doesn't make sounds; you can't pick it up and throw it.  So how do we know it exists?  Help your second grade scientist figure it out.

blow it out

Blow It Out!

This classic children&#39;s game-connecting two cups with a string-demonstrates sound&#39;s ability to travel through air vs through a solid.

the speed of sound on a string

The Speed of Sound on a String

Magic, science, or household cleanser?  Let your second grader decide with this practical, nontoxic chemistry experiment with acids and bases.

experiment with sudsy lemon science

Experiment with Sudsy Lemon Science

Help your child understand the scientific concept of evaporation with this fun outdoor science activity.

puddle science watch evaporation in action

Puddle Science: Watch Evaporation in Action

Here's a fun math and science activity: help your child explore four different kinds of measurement, using their hand and a few simple household tools.

making measurements how big is your hand

Making Measurements: How Big is Your Hand?

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