検索キーワード： 物理学

A pencil is stiff. A rubber band is bendable. Why are some objects stiff and others bendable? Find out in this series about materials and their properties. Informative, at-level text helps listeners understand the differences between stiff and bendable objects.

Books are made with paper. But what if we tried to make a book with metal? Copper, tin, gold, silver—would any of those materials work to make a book? Find out more about metal, its properties, and how it is produced. Then decide if you really could make a book out of metal.

A piece of silk is smooth. Tree bark is rough. Why are some objects smooth and others rough? Find out in this series about materials and their properties. Informative, at-level text helps listeners understand the differences between smooth and rough objects.

A bowling ball is heavy. A feather is light. Why are some items heavy and others light? Find out in this series about materials and their properties. Informative, at-level text helps listeners understand the differences between heavy and light materials.

Ready to make some noise? These hands-on, not-so-ordinary science projects are for you! Design melodic musical instruments and squawking noisemakers. Turn up the bass with activities that let you see sound. Then, learn the science behind each rocking racket! Simple step-by-step instructions make it easy to start experimenting and discover just how fun STEM can be.

A nail is hard. A cotton ball is soft. Why are some objects hard and others soft? Find out in this series about materials and their properties. Informative, at-level text helps listeners understand the differences between hard and soft materials.

Take a look out the window. What do you see? People, cars, bikes, birds, and more are all on the move. With this basic introduction to motion, young listeners will discover the three laws of motion, what they mean, and how they affect our lives every day.

What would our world be like without magnets? Computers, radios, phones, and TVs wouldn't work correctly. And many other modern machines wouldn't exist. With this basic introduction to magnets, young listeners will learn how magnets work and how useful they are our world today.

A cycle is a series of events that are repeated in the same order or almost the same order. Everywhere you look on earth as well as in outer space, you will find many cycles...

How do you get something to move? You use force to move it with a push or a pull. With this basic introduction to forces, young listeners will learn about physical forces and how they are at work in our world every day.

Microwaves heat our food. They carry messages from phone to phone. They help detect the weather. Microwaves are all around us, even if we don't see them. Listeners will learn about microwaves and how we use them every day.

Did you see a flagpole today? Then you’ve seen a pulley at work! These simple machines are all around. Take a listen and discover 13 different uses for pulleys.

Did you put the cap on the toothpaste tube today? Then you’ve used a screw! These simple machines are all around. Take a listen and discover 13 different ways we use screws.

Did you use a fork today? Then you’ve used a lever! These simple machines are all around. Take a listen and discover 13 different ways we use levers.

What does it take to make a strong bridge? Gather some supplies and try it out for yourself! Discover tips and ideas on how to build the best bridge around!

What does it take to make a boat float? Gather some supplies and try it out for yourself! Discover tips and ideas on how to build the best boat around!

What does it take to make a tough tower? Gather some supplies and try it out for yourself! Discover tips and ideas on how to build the best tower around!

What does it take to make a simple trap? Gather some supplies and try it out for yourself! Discover tips and ideas on how to build the best trap around!

What does it take to make a sunshade? Gather some supplies and try it out for yourself! Discover tips and ideas on how to build the best sunshade around!

Radio waves aren't just for listening to your favorite radio station! They are used to make GPS receivers and wireless internet work. Scientists use radio telescopes to help them study space. Listeners learn about radio waves and how we use them every day.