Waves: Light and Sound

Did you know that a dark area appears behind an object when the object blocks light? The dark area is called a shadow. Learn more in Shadows and Reflections, a title in the Waves: Light and Sound series.

Did you know that sound waves move faster through water than through air? They move even faster through solid objects. Learn more in How Sound Changes, a title in the Waves: Light and Sound series.

Did you know that all sources of light make light waves? Waves of different sizes make different colors of light. Learn more in Light Waves, a title in the Waves: Light and Sound series.

Did you know that sound is only made when objects vibrate? Vibrating objects create sound waves. Learn more in Sound Waves, a title in the Waves: Light and Sound series.