Light

Question 1

How does light travel? {as in pattern}

Answer 1

Light travels in straight lines

Question 2

Why do we see light?

Answer 2

We see light because light is reflected into our eyes

Question 3

What does LASER stand for?

Answer 3

L ight
A mplification
S timulation
E mission
R addiation

Question 4

What type of wave is a light wave?

Answer 4

Transverse

Question 5

What type of waves are sound waves?

Answer 5

Longitudinal

Question 6

What is refraction?

Answer 6

Refraction is when light is bent and fractures into lots of colours

Question 7

What type of solids can light travel through?

Answer 7

Light can travel through translucent solids

Question 8

How long does it take light from the sun to reach the earth?

Answer 8

It takes light from the sun 8.5minutes to reach the earth

Question 9

What is a plane mirror?

Answer 9

A plane mirror is wherever you put the mirror, the plane of reflection of it

Question 10

How does light react to something transparent?

Answer 10

Light can completely pass through something transparent

Question 11

How does light react with something translucent?

Answer 11

Light can partially pass through something translucent

Question 12

How does light work with something opaque?

Answer 12

Light cannot pass through something that is opaque

Question 13

What does Luminous mean?

Answer 13

Luminous means ‘emits light’

Question 14

Are most surfaces even or even?

Answer 14

Most surfaces are uneven

Question 15

In what direction are parallel rays reflected in and why?

Answer 15

Parallel rays are reflected in different directions, because services are uneven

Question 16

What is it called when the parallel rays are reflected in different directions?

Answer 16

We call this diffuse reflection

Question 17

Which type of surfaces reflect better?

Answer 17

Smooth, shiny surfaces reflect much better than uneven surfaces

Question 18

In reflection, how will the angles of incidence and refraction compare to each other?

Answer 18

The angle of incidence and the angle of reflection will always be the same

Question 19

What is the scientific name for the colours of the rainbow?

Answer 19

A spectrum of light

Question 20

In refraction, how will the angles of incidence and refraction compare to each other?

Answer 20

In refraction the angle of refraction will always be bigger than the angle of incidence

Question 21

As light rays move into a more dense material does the ray move towards or away from the normal line?

Answer 21

As light rays move into a more dense material the rays move towards the normal line

Question 22

As light rays move into a less dense material does the ray move towards or away from the normal line?

Answer 22

As light rays move into a more dense material the rays move away from the normal line

Question 23

In the spectrum, which colour of light is refracted the most?

Answer 23

The violet light is refracted the most

Question 24

In refraction, which colour of light is refracted the least?

Answer 24

The red light is refracted the least

Question 25

What are the colours of the spectrum? {in the correct order!}

Answer 25

Red
Orange
Yellow
Green
Blue
Indigo
Violet

Question 26

What does black do?

Answer 26

Black absorbs all colours

Question 27

What does white do?

Answer 27

White reflects all colours