optics

Question 1

what is the relationship between the angle of incidence and the angle of reflection?

Answer 1

the angle of incidence = the angle of reflection

Question 2

What way do convex lenses make the rays of light direct towards?

Answer 2

Towards the retina

Question 3

What way do concave lenses make the rays of light direct towards?

Answer 3

Around the retina

Question 4

What is the protective film around the eye?

Answer 4

Cornea

Question 5

What is the iris?

Answer 5

A coloured muscle that alters the size of the pupil and controls the amount of light entering the eye

Question 6

What is the function of the lens?

Answer 6

Focuses light on the retina

Question 7

What is the retina?

Answer 7

Converts light to electrical impulses

Question 8

What does the pupil do?

Answer 8

An opening that allows light into the eye

Question 9

What lens corrects short sight?

Answer 9

Concave

Question 10

What lens corrects long sight?

Answer 10

Convex

Question 11

What is the order of the electromagnetic spectrum?

Answer 11

Radio waves, Microwaves, Infrared, Visible, Ultraviolet, X/ray, Gamma ray

Question 12

What shape creates a rainbow?

Answer 12

Prism

Question 13

What is the line that is drawn through a shape at a 90degree angle called?

Answer 13

The normal

Question 14

Can X-rays be used to scan luggage at the airport?

Answer 14

Yes

Question 15

Can Gamma rays sterilise surgical instruments?

Answer 15

Yes

Question 16

Can Ultraviolet light treat vitamin D deficiency?

Answer 16

Yes

Question 17

Can Gamma rays remove birth marks?

Answer 17

No

Question 18

Do X-rays travel at the speed of sound?

Answer 18

No

Question 19

Does the moon give out its own light?

Answer 19

No

Question 20

True or False.

Light travels in straight lines

Answer 20

True

Question 21

What are the colours of the Visible spectrum?

Answer 21

Red
Orange
Yellow
Green
Blue
Indigo
Violet