Key Terms Chapter 11 - Refraction

Question 1

Refraction

Answer 1

The bending of light as it travels at an angle. Goes from a material with one refractive index to another

Question 2

Refracted Ray

Answer 2

The Ray that is bent upon entering a second medium

Question 3

Angle of refraction

Answer 3

The angle between the refracted Ray and the normal

Question 4

Index of refraction

Answer 4

The ratio of the speed of light in a vacuum to the speed of light in a given medium

Question 5

Dispersion

Answer 5

The process of separating colours by refraction

Question 6

Partial reflection and refraction

Answer 6

Some of the light that is travelling from one medium into another is reflected and some is refracted at boundary between media

Question 7

Critical angle

Answer 7

The angle of incidence that produces an angle of refraction of 90

Question 8

Total internal reflection

Answer 8

Incident light is not refracted but is reflected back from the boundary, occurs when light travels from a medium that is denser to less dense

Question 9

Rainbow

Answer 9

Arc of colours of visible spectrum, appears opposite sun, caused by reflection, refraction, and dispersion of the Suns rays as they pass though water drops

Question 10

Apparent depth

Answer 10

Optical effect where image of object appears closer than the object

Question 11

Shimmering

Answer 11

Apparent movement of objects in hot air over objects and surfaces

Question 12

Mirage

Answer 12

Optical effect caused by bending of light rays passing through layers of air that have extremely different temperatures