Waves in Motion

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. With engaging, at-level text and colorful images, readers learn about radio waves and how we use them every day.

Birds chirp. A dog barks. Thunder claps. We hear sounds all around us. But how? Sound waves travel through the air, but we don't see them. With engaging, at-level text and colorful images, readers will learn about sound waves and how we use them 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. With engaging, at-level text and colorful images, readers will learn about microwaves and how we use them every day.

You see your shadow outside on a sunny day. A rainbow appears in the sky after a storm. Light waves are all around us, even when it's dark. With engaging, at-level text and colorful images, readers will learn about light waves and how we use them every day.