Additional Specifics about Behaviors of Lights

Question 1

What are the 2 laws of reflection

Answer 1

1. The angle of incidence is always equal to the angle of reflections
2. The incident ray, the normal, and the reflected ray all fall on the same plane

Question 2

What are the 2 types of reflection?

Answer 2

Spectacular reflection and diffuse reflection

Question 3

When does spectacular reflection occur?

Answer 3

Spectacular reflection occurs when a perfectly smooth surface reflects light, forming an image of its surroundings

Question 4

When does diffuse reflection occur?

Answer 4

Diffuse reflection occurs when a smooth but not perfectly smooth surface reflects light, and allows you to see what is on the surface but does not produce a clear reflective image because the light rays are being reflected in random directions

Question 5

Why is reflection relevant to the colours that we see?

Answer 5

Reflection is relevant to the colours that we see in the same since the colour of light that is reflected off of an object is the colour that your eyes will see, because of our cones

Question 6

When does refraction occur?

Answer 6

Refraction occurs when light travels from one medium to another, causing it to slow down or speed up, and change direction

Question 7

What happens when light enters a denser medium?

Answer 7

When light enters a denser medium it slows down and refracts toward the normal.

Question 8

What happens when light enters a less dense medium?

Answer 8

When light enters a less-dense medium, it speeds up and refracts away from the normal

Question 9

What happens when light transmits through a medium at a 90 degree angle?

Answer 9

No refraction occurs

Question 10

What is a prism?

Answer 10

A prism is a small glass triangular prism that refracts light and has many different faces

Question 11

How many times does light refract when it enters a prism?

Answer 11

Twice - once when it goes in, once when it goes out

Question 12

What happens to the EM spectrum when light enters a prism?

Answer 12

When light enters a prism, the reflection causes each different wavelength in the EM spectrum to separate. This creates a visual spectrum/rainbow.

Question 13

TRUE or FALSE - the non-visible wavelengths are still there but we just cant see them

Answer 13

TRUE

Question 14

TRUE or FALSE? Red always travels the shortest and the colour refracts the least is violet

Answer 14

FALSE - Red always travels the longest and the colour violet refracts the most is violet

Question 15

What are the colours we see in the visible light spectrum that a prism creates?

Answer 15

Red, orange, yellow, green, blue, indigo, violet (same colours we see in a rainbow)