9.5 - Light Energy

Question 1

Rays

Answer 1

Narrow beams of light.

Question 2

Beam

Answer 2

Wide streams of light rays, all moving in the same direction.

Question 3

Reflection

Answer 3

Bouncing off the surface of a substance

Question 4

Luminous

Answer 4

Releasing its own light.

Question 5

Scattering

Answer 5

Describes light sent in many directions by small particles within a substance.

Question 6

Transparent

Answer 6

Describes a substance that allows most light to pass through it. Objects can see through transparent substances.

Question 7

Translucent

Answer 7

Allowing light to come through the imperfectly, as in frosted glass.

Question 8

opaque

Answer 8

Describes a substance that does not allow any light to pass through it.

Question 9

Concave

Answer 9

Curved inwards

Question 10

Convex

Answer 10

Curved outwards

Question 11

Focal Point

Answer 11

The focus for a beam of light rays.

Question 12

Lateral inversion

Answer 12

Reversed sideways

Question 13

Refraction

Answer 13

Change in the speed of light as it passes from 1 substance into another. It usually involves direction change.

Question 14

Normal

Answer 14

A line draw perpendicular to the surface at the point where a light ray meets it.

Question 15

Image

Answer 15

Picture of an object.