Light

Question 1

The light from the sun………. Off and object and into our eye

Answer 1

Reflects

Question 2

How fast does light travel?

Answer 2

300,000,000 m/s

Question 3

How fast does sunlight take to reach earth?

Answer 3

8.3 minutes

Question 4

Light travels in?

Answer 4

Straight lines

Question 5

The law of reflection is…

Answer 5

Angle of incidence = angle of reflection

Question 6

In a basic mirror, our image is…

Answer 6

Laterly inverted, the right way up, the same size, virtual, behind the mirror.

Question 7

A tiny upside down image forms in….

Answer 7

The retina

Question 8

It changes light energy into electrical signals called……

Answer 8

Impulses

Question 9

Impulses travel to the brain through the….

Answer 9

Optic nerve

Question 10

Light waves change speed when passing between the boundry of 2 substances with different….

Answer 10

Density

Question 11

When passing between two boundaries it causes the light waves to change direction. An effect called…..

Answer 11

Refraction

Question 12

When light hits the glass block it slows down and….

Answer 12

Bends towards the normal line.

Question 13

The rainbow is in order of…

Answer 13

Lowest to highest frequency.

Question 14

Red and green

Answer 14

Black

Question 15

Filters absorb what?

Answer 15

All colours but the one which is the same as itself.

Question 16

How far away is the sun?

Answer 16

15,000,000 km