Visible Light and Colour

Question 1

What is black

Answer 1

An absence of light

Question 2

What is white

Answer 2

A combination of all the wavelengths

Question 3

What does opaque mean

Answer 3

Doesn’t transmit any light
(All wavelengths of light are either absorbed or reflected)

Question 4

What does transparent and translucent objects both do

Answer 4

Transmit a lot of the light that hits them (passes straight through)

Question 5

What do only transparent objects do

Answer 5

Transmit nearly all the light (small fraction is absorbed or reflected)

Question 6

What do only translucent objects do

Answer 6

Only transmit some of the light
The proportion of the light they transmit determines how well we can see through

Question 7

What determines the colour of translucent objects?

Answer 7

Which wavelengths are transmitted the most (other wavelengths are being absorbed)

Question 8

How do you colour filters works?

Answer 8

Filter out particular colours so only certain wavelengths can pass through
(Only transmit certain wavelengths they absorb the rest)

Question 9

How does a primary colour filter work?

Answer 9

Only allows one of the three primary colours to be transmitted

Question 10

How do filters that Aren’t for primary colours work?

Answer 10

They let both the wavelength of the same colour as the filter through
as well as primary colours that can be added together to make that colour