Lenses

Question 0

The type of lens that is thicker in the middle that it is on the edges.

Answer 0

Convex

Question 1

A concave lens causes light rays to ________.

Answer 1

Converge

Question 2

The type of lens that is thinner in the middle than it is on the edges.

Answer 2

Concave

Question 3

Which lens could be used to start a fire?

Answer 3

Convex because it can focus light rays to one point.

Question 4

Light travels in ________ beams that lenses can focus.

Answer 4

Parallel

Question 5

The thickest part of a concave lens.

Answer 5

Edges

Question 6

The thickest part of a convex lens

Answer 6

Middle

Question 7

The distance from the lens to the focal point is called the _____ ______.

Answer 7

Focal length

Question 8

One unit that the focal length can be measured in.

Answer 8

Centimetres

Question 9

An important use of a lens is to create one of these.

Answer 9

Image

Question 10

Another word for upside down.

Answer 10

Inverted

Question 11

An enlarged image is also called a _________ image.

Answer 11

Magnified

Question 12

A convex lens causes light rays to ________.

Answer 12

Converge

Question 13

A concave lens is causes light rays to _______.

Answer 13

Diverge

Question 14

The focus of a concave lens is on the ____ side that the light rays have come from.

Answer 14

Same

Question 15

The focus of a convex lens is on the ________ side that the light rays have come from.

Answer 15

Opposite

Question 16

All lenses must be ___________ for light to pass through them.

Answer 16

Transparent