what is the peak of a wave?
the highest point on a wave
state the definition of wavelength
the distance from one point on one wave to the identical point on the next wave
what is the meaning of amplitude?
the maximum distance of a point on the wave from its rest position
what’s the formula to calculate density?
density = mass / volume
what do waves do when they enter a new material, and what is this called?
they change speed and direction, this is called refraction
what is the law of reflection?
the angle of incidence is always equal to the angle of reflection
what is refraction?
when the direction of a wave changes because it has changed speed as it has travelled from one medium to another
when light moves from a more dense medium to a less dense medium, it bends. . . the normal
away from
what happens to wave fronts after refraction?
the wave fronts change direction, they change the distance from each other
when a wave enters a new medium, the wavelength and speed. . ., but the frequency. . .
the wavelength and speed change, but the frequency stays the same
what three things can happen to a wave when they arrive at a boundary between two different materials?
they can be reflected, absorbed or transmitted
if the frequency of a wave increases, the wavelength. . .
decreases
