Light

Question 1

What is the law of reflection?

Answer 1

i=r

Angle of incidence = angle of reflection

Question 2

What is refraction?

Answer 2

Refraction is the bending of light as it enters a different material.

Question 3

How is refraction caused?

Answer 3

Refraction is cause by the light changing speed

As it goes through a different densities of material

Question 4

What is diffraction?

Answer 4

Diffraction is the bending of waves around an obstacle or through a gap.

Question 5

Long sightedness meaning?

Answer 5

The person can see distant objects clearly but they cannot ot focus on near objects.

Question 6

Short sightedness meaning?

Answer 6

The person can see near objects clearly, but cannot do us on distant objects.

Question 7

What are transverse waves?

Answer 7

Waves where particles move up and down but the wave travels at 90° to the particle movement.

Question 8

Examples of transverse waves

Answer 8

• radio
• water
• x- Ray’s
• light

Question 9

What are longitudinal waves?

Answer 9

Waves where particles move in the same direction as the wave energy direction.

Question 10

Example of a longitudinal wave

Answer 10

• sound