7P - Light Knowledge Test

Candidate Name:
1) What is the maximum displacement of a wave called?
2) How is the wavelength of a wave measured?
3) What do waves usually transfer?
4) Why are water waves and light waves described as 'transverse'?
5) What is refraction?
6) Why can light travel through a vacuum?
7) What is another name for light?
8) What happens when all the colours of light mix?
9) Why are the colours of white light separated in a rainbow?
10) Why do different colours of light bend different amounts?
11) How does the frequency of light affect how much is it bent by a prism?
12) How do light waves travel if not by particles?
13) How does frequency affect the energy of a wave?
14) How do the frequencies of red visible light and violet visible light compare?
15) What is the speed of light in a vacuum?
16) How do the energies of red visible light and violet visible light compare?
17) What happens when colours of paint are mixed?
18) What three things can happen to a wave when it encounters a material?
19) How do light waves travel?
20) What is the law of reflection off a plane surface?
21) What is the symbol of a mirror for ray diagrams?
22) What is it called when a wave hits a flat, shiny surface and bounces back?
23) How does specular reflection allow an image to be formed?
24) When does diffuse scattering occur?
25) Why does a red object look red in white light?
26) How can you split white light?
27) What are the components of the eye?
28) How does light enter the eye?
29) Why does the pupil change size?
30) How is a focused (clear) and bright image produced by the eye?
31) Why are the cornea and lens convex in shape?
32) What does a lens do to the image of an object?
33) How do they specialised cells detect changes in light energy in the eye?
34) How does the eye inform the brain what you see?
35) What does a ray model of a pinhole camera look like?
36) With photosensitive paper where does light transfer from and to?
37) What things can absorbed light energy do in a polaroid camera lead to?
38) What can absorbed light energy lead to in the eye?
39) How does a pinhole camera create a faint image that is in focus?
40) What can happen to a charged surface when light energy is absorbed?
41) Why does having three small holes in a pinhole give three faint images that are in focus?
42) Where is the light reflected in the eye?
43) How can a picture be made using a CCD?
44) How does a bigger hole effect the image produced?
45) How do the Big Ideas link to this topic?

a) Forces:

b) Particles:

c) Energy:

d) Cells: