P3- waves

Question 1

wave equation

Answer 1

v = f λ

v- speed/velocity
f-frequency
λ- wavelength

Question 2

describe in terms of oscillations and energy transfer what is meant by a longitudinal wave

Answer 2

waves where oscillations are parallel to the direction of energy transfer

Question 3

explain why the ray of light is able to stay in the optical fibre.

Answer 3

-total internal reflection of the light
-angle of incidence is greater than critical angle

Question 4

examples of longitudinal waves

Answer 4

seismic p wave

sound wave

Question 5

transverse wave

Answer 5

seismic s wave

water wave

EM waves

Question 6

describe dispersion in terms of wave frequency

Answer 6

• different colours have different frequencies

-the higher the frequency the greater the refraction