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Waves

Explore the fascinating world of waves in this informative overview. Learn about the two main types of waves: transverse and longitudinal, including their definitions, particle movement, and key terms such as amplitude, wavelength, frequency, and period. Understand wave speed and how it relates to different mediums. Discover examples including sound waves and phenomena like the Doppler Effect. This guide provides essential insights into the mechanics of waves and their significance in physics and everyday life.

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Waves

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  1. Waves

  2. What is a wave? Waves move energy.

  3. Transverse Wave In a transverse wave, the particles move _______________ to the direction of the wave. perpendicular

  4. Terms to Know In phase – parts of the wave that have the same displacement and are moving in the same direction. • http://funwaves.wikispaces.com/4.+Transverse+wave Amplitude – maximum displacement Wavelength – distance between 2 consecutive particles in phase

  5. Examples

  6. More Terms! • Pulse - The pictures shown have been continuous waves, but there can also be waves caused by a single disturbance. • Period – time it takes for a single wave to go by • Frequency – how many waves pass in a second Period and frequency are reciprocals

  7. Practice problems • Period and frequency http://www.physicsclassroom.com/Class/waves/u10l2b.cfm

  8. Longitudinal Waves In a longitudinal (or compression) wave, the particles move _______________ to the direction of the wave. parallel

  9. Terms to Know In phase, amplitude, frequency, pulse and period all apply to both wave types! • http://funwaves.wikispaces.com/5.+Longitudinal+wave

  10. Examples

  11. So what is a water wave?Transverse or Longitudinal?

  12. Both! • http://faculty.gvsu.edu/videticp/waves.htm

  13. Wave Speed • Wave Speed = wavelength x frequency • V = x f • Wave speed depends on the medium • Practice! http://www.physicsclassroom.com/Class/waves/u10l2e.cfm

  14. Properties of sound waves • Amplitude • Frequency • Volume • Pitch • Which of these terms goes together?

  15. So if wave speed depends on the medium, what happens when a wave encounters a different medium? • reflection • refraction http://www.gpb.org/chemistry-physics/physics/1103 3:30-6:00

  16. Forced vibrations and natural frequencies

  17. Interference aka Resonance http://www.acs.psu.edu/drussell/demos/superposition/superposition.html http://serc.carleton.edu/NAGTWorkshops/deepearth/activities/40826.html

  18. AM and FM radio

  19. Doppler Effect • The perceived pitch is different due to waves getting squished together or spread out by the movement of either the thing making the noise or receiving it.

  20. Doppler effect

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