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Physical Science

  • Infographic: What Is the Electromagnetic Spectrum? You’re probably more familiar with the electromagnetic spectrum than you realize. In fact, you encounter it regularly every day. View »
  • What's the Buzz About? Sound in a Vacuum Sound waves require a medium through which they travel. No medium (even air), no sound. Easily demonstrate this concept with a vacuum pump, buzzer, and jar. View »
  • Boosting Cell Phone Speakers Inspire your students with a design challenge that encourages them to think outside the box. In this hands-on activity, student teams compete to produce the best sound booster for a smartphone or MP3 player using everyday items. Includes background information and complete instructions for teacher and students. View »
  • The Science of Rainbows The spectrum of a rainbow helps students learn about light and waves properties View »
  • The Physics of Vision Get ready to investigate parallax and depth perception with 2 activities you can complete in less than 30 minutes. View »
  • Sound Off Design a sound amplifier using different shapes and materials with this activity. Students should be familiar with the properties of sound waves and understand the definition of “acoustics.” View »
  • Bending Light Light travels in a straight path. Find out how get light to “bend” and follow a curved stream of water! View »
  • Violet Shines Blue Classic demo with a violet laser pointer may be used as a discrepant event to discuss light waves, fluorescence, or chemical quenching. View »
  • Make the Invisible Visible: Detecting IR Light with a Smart Phone When it comes to light, there’s more than meets the eye. But with a smartphone camera and a remote control, you can make the invisible visible and show your students infrared light. View »
  • What Goes On Inside a Spectrophotometer? A spectrophotometer measures the amount of light absorbed or transmitted as it passes through a sample, such as a solution containing food dye. Use this article to cover the basics of how a spectrophotometer works. View »
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