Communication

Question 1

What is a ray of light?

Answer 1

A narrow beam, a column of light (as from a beacon)

Question 2

What is reflection?

Answer 2

Light reflecting back off a surface

Question 3

What is refraction?

Answer 3

Light bending as it passes through a lense

Question 4

How are sound waves and light waves different?

Answer 4

Sounds wave longitudinal, light waves transverse

Question 5

How does the length of the wavelength effect frequency?

Answer 5

Longer wavelength = less frequent

Question 6

What do the following words mean? Transparent, translucent, opaque.

Answer 6

Transparent: Allowing light to pass through so that objects behind can be distinctly seen.
Translucent: Allowing light, but not detailed shapes, to pass through; semi-transparent.
Opaque: Not able to be seen through; not transparent

Question 7

What are the cells called in the retina that absorb colour?

Answer 7

Rod and cone

Question 8

What are the cells called in the retina that absorbs black and white?

Answer 8

Rod and cone