waves / light

Question 1

what is Amplitude

Answer 1

The maximum distance a point on a wave moves from its rest
position (measured in metres)

Question 2

what is Wavelength

Answer 2

The distance from a point on one wave to a point on the next wave
(measured in m)

Question 3

what is Frequency

Answer 3

The number of waves passing a point each second (measured in
hertz (Hz))

Question 4

name the 2 reflective waves

Answer 4

specular
reflection and diffuse reflection

Question 5

Cornea function (eye part)

Answer 5

The transparent front part of the eye that covers the iris and the pupil and refracts light as it enters the eye

Question 6

Iris function (eye part)

Answer 6

The coloured part of the eye (blue, brown, green etc.) that controls how much light enters the pupil

Question 7

Lens function (eye part)

Answer 7

Further refracts light to focus it onto the retina at the back of the eye.

Question 8

Pupil function (eye part)

Answer 8

The circular opening of the iris where light enters the eye

Question 9

Retina function (eye part)

Answer 9

The back of the eye which contains the light receptor cells (rod cells and cone cells).
Rod cells – detect low levels of light but cannot distinguish colour.
Cone cells – 3 different types, one for each primary colour of light. Work best in bright light