Waves

Question 1

(no answer for this q) Waves transfer energy and information without transferring matter

Question 2

Define the terms frequency and wavelength

Answer 2

Frequency : number of waves passing a point each second ( measured in hertz (Hz))
Sound Frequency : determines the pitch
Light Frequency : determines colour

Wavelength : distance from a point on one wave, to a point in the same position on the next wave (measured in metres)

Question 3

Use the terms amplitude, period, wave velocity

Answer 3

amplitude = distance from the middle to the top or bottom ( in metres)
the greater the amplitude the louder the sound

period= length of time it takes one wave to pass a given point

wave velocity = speed of the wave in the direction it is travelling - travel at different speeds in diff materials

Question 4

What is a transverse wave?

Answer 4

A wave where the vibrations are 90 degrees to the direction it is travelling in

Question 5

What is a longitudinal wave?

Answer 5

A wave where the vibrations are parallel to the direction it is travelling in

Question 6

what’s the normal?

Answer 6

line at 90degrees of surface

Question 7

what’s the angle of incidence?

Answer 7

angle that hits the mirror
equal to the angle of reflection

Question 8

p waves can..

Answer 8

travel through liquids and solids

Question 9

s waves can..

Answer 9

cannot travel through liquid bc it’s transverse