Learn about the creation of sound and how sound waves travel

Learn about the creation of sound and how sound waves travel

Description of sound waves.
© Josef Martha—sciencemanconsulting.com
  • Contunico © ZDF Studios GmbH, Mainz; Thumbnail © Vincent Thedyono/Dreamstime.com
    Studying fossil coral to uncover information about Earth's history.
  • Encyclopædia Britannica, Inc.
    Understanding energy flow in ecosystems.
  • NASA
    Perhaps the most famous of all space films, these clips document the arrival of the first human beings on the Moon on July 20, 1969.