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All waves carry energy

Learn about wave components such as wavelength, amplitude, and frequency. Explore the differences between transverse and longitudinal waves with practical examples. Enhance your knowledge of wave energy and characteristics.

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All waves carry energy

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  1. All waves carry energy Waves

  2. A wave can be drawn as a squiggly line:

  3. Wave Components  • Wavelength () • This is the distance from the crest of one wave to the crest of the next wave (or trough to trough)

  4. Wave Components Amplitude This is the height of a wave from the mid-point to a crest (or from the mid-point to a trough)

  5. Wave Components Frequency (f) • This is the number of complete waves per second. It is measured in Hertz (Hz)

  6. Examples of Frequency What is the frequency of the second hand of a clock? Frequency = 1cycle/60 sec What is the frequency of US Presidential elections? Frequency = 1 election/4 yrs

  7. Frequency & Pitch high frequency = high pitch low frequency = low pitch

  8. Transverse vs. Longitudinal Waves • Transverse waves (water waves, light waves) move perpendicular (at a 90o angle) to the direction of the wave and the direction its energy is traveling

  9. Transverse vs. Longitudinal Waves • Sound is a longitudinal wave, meaning that the vibrations move the same direction the wave is traveling in

  10. Example of what a speaker does to air molecules to produce sound A longitudinal wave!

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