refraction

Question 1

refraction:

Answer 1

waves changing direction as they pass from 1 medium to another.

Question 2

higher the density

Answer 2

= slower the wave will travel through it

Question 3

why does refraction happen?

Answer 3

change in speed of a wave dependent on density of the material.

Question 4

light travelling from a less dense material (AT AN ANGLE), to a more dense material will bend…

Answer 4

towards the normal.

(if it enters perpendicular, it will stay the same)

Question 5

when a wave travels into a denser material…

Answer 5

the frequency stays the same.

Question 6

triangular prism:

Answer 6

different wavelengths are refracted by different amounts.

so white light through a triangular prism = diff colours bend at diff degrees so they spread out into a rainbow.