Waves (topic 3)

Question 1

Amplitude

Answer 1

maximum displacement of a wave from its undisturbed position

Question 2

Critical angle

Answer 2

angle of incidence beyond which all the wave is totally internally reflected when it meets a boundary

Question 3

Doppler effect

Answer 3

change in a waves observed wavelength and frequency when there is relative motion between its source and an observer

Question 4

Diffuse reflection

Answer 4

reflection of a wave from a rough surface that results in the wave being scattered