12/1/09

Post date: Nov 30, 2009 8:54:25 PM

Bell Ringer: How are waves and energy related?

• • Waves are one way to transfer energy from one location to another (sound and light are both examples of energy transferred as waves)

• Waves wishlist

  • 1 page minimum

  • Write a "Dear Santa"-like letter, asking for different types of waves and describing their properties. Waves you can include are:

    • Transverse waves

    • Longitudinal waves

    • Surface waves

    • EM waves

    • Mechanical waves

  • Anatomy of a wave

    • Node - the part of a wave at equilibrium

    • Antinode - the part of a wave furthest from equilibrium

      • • Crest - high point of a wave

        • Trough - low point of a wave

    • Wavelength - the distance between two identical parts of a wave

    • Frequency - the number of waves that go by a point each second

    • Period - the time for one complete cycle of a wave to go by

    • Amplitude - the distance from equilibrium to the antinode of a wave

  • Wave speed

    • wave speed = frequency times wavelength

    • example problems

  • Page 519: practice problems 1-3 due Wednesday

• PowerPoint Notes for 15-2