2. Properties of Waves

3.  There are 4 basic properties  Amplitude  Wavelength  Frequency  Speed  There are 4 basic properties  Amplitude  Wavelength  Frequency  Speed Note taking example: Properties of waves Amplitude (**leave space**) Wavelength (**leave space**) Frequency (**leave space**) Speed (**leave space**)

4. Amplitude  Amplitude is the maximum distance the medium moves away from its rest position  How do you find amplitude?  Transverse waves- measure the distance from the rest position to a crest or trough  If a wave has really high crests and really low troughs, it has a large amplitude  Longitudinal waves- measure compressions or rarefactions  If a wave has really close compressions and loose rarefactions, it has a large amplitude  Amplitude is the maximum distance the medium moves away from its rest position  How do you find amplitude?  Transverse waves- measure the distance from the rest position to a crest or trough  If a wave has really high crests and really low troughs, it has a large amplitude  Longitudinal waves- measure compressions or rarefactions  If a wave has really close compressions and loose rarefactions, it has a large amplitude Note taking: Amplitude Max distance the medium moves away from its rest position  distance from rest position to crest/trough

5. Amplitude A= Amplitude

6. Amplitude Which has a larger amplitude A or B? Why?

7. Wavelength  How do you find wavelength?  Transverse wave- distance between two crests or two troughs  Longitudinal wave- distance from the beginning of one compression (or rarefaction) to the beginning of the next compression (or rarefaction)  How do you find wavelength?  Transverse wave- distance between two crests or two troughs  Longitudinal wave- distance from the beginning of one compression (or rarefaction) to the beginning of the next compression (or rarefaction) Note taking:

8. Frequency  Frequency is the number of complete waves per second  Measured in hertz (Hz)  A wave that occurs once per second, has a frequency of 1 Hz  Frequency is the number of complete waves per second  Measured in hertz (Hz)  A wave that occurs once per second, has a frequency of 1 Hz Practice: If 1 second passes, what is the frequency of Wave A? Wave B? A B Note taking: Frequency Number of waves per second  measured in hertz (Hz)

9. Speed  Speed (velocity) is how fast a wave travels  How do you find speed?  Speed= Wavelength Frequency  Speed (velocity) is how fast a wave travels  How do you find speed?  Speed= Wavelength Frequency

10. Mathematical Formulas  Speed= Wavelength Frequency  Frequency= Speed/Wavelength  Wavelength= Speed/Frequency  Speed= Wavelength Frequency  Frequency= Speed/Wavelength  Wavelength= Speed/Frequency