p5.3 wave interactions

Question 1

why do waves travel at different speed in different mediums

Answer 1

because different mediums have different densities

Question 2

the higher the density the ….. (faster/slower) the travel

Answer 2

slower the travel

Question 3

what will happen if the wave is travelling perpendicular to the boundary between the two materials

Answer 3

the wave will continue in a straight line

Question 4

what happens if the wave hits the boundary at an angle

Answer 4

refraction

Question 5

if the wave is passing at an angle into a more dense material it will travel ……. (towards / away from) the normal

Answer 5

towards

Question 6

what is the normal

Answer 6

a line perpendicular to the surface

Question 7

what is the name of the incoming ray

Answer 7

the incident ray

Question 8

what is the point of incidence

Answer 8

the point where the incident ray hits the surface

Question 9

what part of the equation wavelength = frequency*wavelength stays the same?

Answer 9

the frequency