Extra Things On Light

Question 1

What is a ray?

Answer 1

A straight line showing the direction in which light is travelling

Question 2

Name the 3 types of beams:

Answer 2

Converging, diverging, parallel

Question 3

3 examples of a luminous object

Answer 3

TV screens and light bulbs (on) and the sun

Question 4

4 pieces of evidence that light travels in straight lines:

Answer 4

Shadows, laser beam, pinhole camera, shaft of light through clouds

Question 5

The angle of incidence is equal to:

Answer 5

The angle of reflection

Question 6

What are the three properties of light?

Answer 6

It can travel through a vacuum, it travels in straight lines, it travels very quickly (300 000 000 m/s)

Question 7

The properties of an image formed by a plane mirror:

Answer 7

Erect, virtual, laterally inverted, the line joining the object and the image is at right angles to the mirror

Question 8

What is refraction?

Answer 8

The bending of a ray of light at the boundary where it travels from one material to another