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Physical Science

  • 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 »
  • 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 »
  • 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 »
  • 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 »
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