Address P.O. Box 219 Batavia, IL 60510
Phone 800-452-1261
Fax 866-452-1436

Have you ever observed a carpenter hammering in a nail off in the distance? If you are far enough away from the carpenter, you will observe the hammer hit the nail before you hear it hit. It seems as though there is a delay in the time it takes for the sound to reach your ears. Why does this happen? How fast does sound travel? Discover the speed of sound with this activity!


  • Waves
  • Nodes & Antinodes
  • Velocity
  • Frequency