Chapter+4+Lesson+2

iii. Properties of waves A. basic properties of waves 1. amplitude 2.wavelength 3.frequency 4.speed B.amplitude- the maximum distance that the particles of the medium carrying the wave move away from their rest position. 1. more energy= greater amplitude 2. Amplitude of transverse waves is the maximum distance the medium moves up or down from its rest position i.measure distance from the rest potion to a crest or to a trough 3. Amplitude of longitudinal waves is a measure of how compressed or rarefied the medium becomes i. high energy - more compression and rarefaction than low energy ii. Dense compression= lg amplitude C.Wavelength_ distance between 2 corresponding parts of a wave 1.crest to crest 2. trough to trough 3. Distance between compression D. Frequency- the number of complete waves that pass a given point in a certain amount of time. 1. Measured in Hertz 2. 1 sec = 1 hz 3. Heinrich Hertz i. German scientist ii. radio waves E. speed - how far the wave travels in a given length of time Quiz 1. 4 Hz 2. 4 cm 3.8 cm/s 4.amplitude 5. wavelength 6.crest 7. trough Study Guide 3. the rest position to a crest 4.the compression are dense 5. 5 Hz 6. Except:Frequency = wavelength/speed 7. echo 13.amplitude 19.false-wavelength 21.amplitude is 6 cm, amplitude is distance from rest position to trough or crest 22.wavelength is 20 cm, wavelength is the distance from 1 crest to the next or from 1 trough to the next 23.Frequency is the number of complete waves that pass a given point in a certain amount of time. You find frequency by speed wave length 25. The amplitude of a wave is a measure of the wave has the larger the amplitude is 30. increasing the speed of a wave increase its wavelength. Increasing the frequency of a wave decreases its wavelength