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

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

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

9. Examples

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

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

12. Practice problems Period and frequency http://www.physicsclassroom.com/Class/wav es/u10l2b.cfm http://www.physicsclassroom.com/Class/wav es/u10l2b.cfm

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 http://www.physicsclassroom.com/Class/waves /u10l2e.cfm

14. Interference http://www.acs.p su.edu/drussell/d emos/superpositi on/superposition.html http://serc.carlet on.edu/NAGTWo rkshops/deepear th/activities/408 26.html aka Resonance

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

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

17. Forced vibrations and natural frequencies

18. AM and FM radio

19. http://www.lon-capa.org/~mmp/applist/doppler/d.htm

20. 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. http://www.gpb.org/chemistry- physics/physics/1201 http://www.gpb.org/chemistry- physics/physics/1201 18:30 – 30:00

21. Doppler effect