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These sites explain sound waves and how the ear hears sounds. Includes information on sonic booms and decibels. Listen to a variety of sounds, watch movies about sound, and try several hands-on experiments. Includes links to eThemes Resources on radio waves and light.
Find out what causes sonic booms. Can you hear a sonic boom in space? Choose the correct answer at the bottom to learn more. Then try the "Challenge" to find out what other things make (or don't make) sonic booms.
This is a brief explanation of how the ear works to detect sound. Click on the "Sound" link at the bottom to learn more about sound and music. "Sound Lessons" has an experiment involving a tuning fork.
Click on the arrow to advance through this animation that shows how sound travels through the ear. NOTE: The "Talk" link at the top leads to message boards. There is also a link on the page to information about puberty.
These sites are about visible light and the color spectrum. Learn the basic concepts of color theory including the color wheel, additive and subtractive colors, reflection, and refraction. Try the online color blindness test. There is also information about the speed of light and how the eye works. Many sites include interactive activities that are fun for the SMARTboard.
These sites explain how radio waves are a part of the electromagnetic spectrum. Includes information about AM and FM frequencies and how to measure waves. Also includes a biography on Marconi, inventor of the radio. Includes several animated movies, hands-on activities and interactive quizzes. There is a link to an eThemes Resource on sound.