8K Light

Question 1

How does light travel

Answer 1

In a straight line

Question 2

What is light

Answer 2

A way of transferring energy from one place to another

Question 3

Can light travel through a vacuum

Answer 3

Yes

Question 4

Light travels through

Answer 4

Transverse waves

Question 5

Light can pass straight through a transparent material . We say light is what through these materials

Answer 5

Transmitted

Question 6

When a light hits an opaque object what happens

Answer 6

Some of it reflects and some of it is absorbed .

Question 7

Sometimes you can only see the glow of an object through it . What is this called

Answer 7

A translucent object

Question 8

What are opaque objects

Answer 8

Objects that do not let light travel through

Question 9

How do we see non luminous objects

Answer 9

They reflect light

Question 10

Which objects absorb more light darker or paler

Answer 10

Darker

Question 11

Why do most objects no reflect anything

Answer 11

Because rough surface reflect light unevenly

Question 12

What objects reflect light evenly and why

Answer 12

Mirrors produce an image because the have a smooth surface

Question 13

What is the incident ray

Answer 13

The ray of light that goes toward a mirror

Question 14

What is The reflected ray of light called

Answer 14

Reflected ray

Question 15

What is the normal

Answer 15

A dotted line perpendicular to the mirror and helps is measure the angles

Question 16

What’s refraction

Answer 16

When light travels from one medium to another it bends .this is called refraction

Question 17

Where does refraction take place

Answer 17

Where two substances meet their interface

Question 18

When light travels from air to am material which way does it bend and why

Answer 18

It changes direction toward the Normal because it goes from a rare medium to a dense medium

Question 19

When light travels out into the air i5 travels from

Answer 19

A dense medium to a rare medium

Question 20

When light travels from a dense medium to a rare medium what happens

Answer 20

It changes direction away from the normal

Question 21

What is white light

Answer 21

All the colours red orange yellow green blue indigo violet

Question 22

Coloured light can be made by

Answer 22

Using a filter over white light

Question 23

How does red filter work

Answer 23

Because it absorbs all the other colours and only transmits the red colour

Question 24

What are the primary colour of light

Answer 24

Green blue red

Question 25

What is a convex lens

Answer 25

Convex lens is a converging lens which converges the parallel rays of light passing through it to meet at a point called the focus

Question 26

What is a concave lens

Answer 26

Diverging lens so the parallel rays of light diverge when they pas through

Question 27

Explain what happens when a white light goes through a prism

Answer 27

Dispersion which happens due to the refraction of colours at different angle