Wave Properties

Question 0

2) In whatever substance they’re travelling in, how does a wave travel?

Answer 0

In a straight line

Question 1

1) All waves can be ….., ….. and …..?

Answer 1

Reflected, refracted and diffracted

Question 2

3) What can change the direction of travel of a wave?

Answer 2

An obstacle or new material

Question 3

4) Changing the direction of a wave can occur via…?

Answer 3

Reflection, refraction and diffraction

Question 4

5) What allows us to see objects?

Answer 4

Reflection of light

Question 5

6) When a beam of light reflects from an uneven surface, the light reflects off…?

Answer 5

At different angles

Question 6

7) When a beam of light reflects from an even surface, the light reflects off…?

Answer 6

At the same angle

Question 7

8) What is the ‘normal’ in relation to angles of incidence? (Where the light hits the surface)

Answer 7

The normal is an imaginary line that’s perpendicular to the surface at the point of incidence

Question 8

9) What is the law of reflection?

Answer 8

Angle of incidence = Angle of reflection

Question 9

10) When can total internal reflection occur?

Answer 9

When light travels through a dense material towards a less dense substance

Question 10

11) What is the critical angle?

Answer 10

The angle in which must be less than the angle that light enters a median for total internal reflection to occur

Question 11

12) What happens when the angle of incidence is bigger than the critical angle?

Answer 11

No light comes out. It’s all internally reflected

Question 12

13) What happens when the angle of incidence is smaller than the critical angle?

Answer 12

Most of the light is refracted into the outer layer, but some of it is internally reflected

Question 13

14) What happens when the angle of incidence is equal to the critical angle?

Answer 13

The ray would go along the surface (with some internal reflection)