Homework 1 Light
1. A light ray hits a mirror a 40˚ as shown in the diagram.
40˚
a) Copy and complete the diagram showing the reflected ray.
(2)
b) What name is given to the dotted line at right angles to the mirror (1)
2. Copy and complete the paths of the rays of light as they pass through each
lens.
(4)
3. Match the part of the eye with its function
Lens
Part of the eye
cornea
optic nerve
(3)
iris
retina
function
Transparent window that lets light into
the eye
The screen where an image is formed
Carries signals to the brain
Focuses the light
Changes size to let more or less light in
through the pupil
(10 marks)
Homework 2: The EM Spectrum
1. State a use for each of the following regions of the EM spectrum
Part of the Spectrum
Radio & TV waves
Microwaves
Infrared
Ultra Violet
X- Rays
Gamma Rays
(6)
Use
2. The Sun emits Ultra Violet radiation (UV),Too much UV light can be
harmful. Suggest a way of protecting yourself from too much UV light. (1)
3. White light can be split up into a spectrum using a specially shaped piece of
glass.
a) What name is given to this shape of glass
(1)
b) Copy and complete the diagram showing all the colours produced
when white light is passed through the glass
(2)
Ray of white light
(10 marks)