Lesson 3 Refraction and lenses

The reason the pencil looks broken is because of refraction.

• True

• False

A lens that is thicker in the middle than at the edges is a __________lens.

• Concave

• Convex

Tags

NGSS.MS-PS4-2

Light enters the eye through the ___________.

• Pupil

• Iris

• Sclera

• Cornea

Which is not an example of a device that uses a lens?

• binoculars

• glasses

• camera

• mirror

What type of lenses are in the human eye?

• concave

• convex

Which medium would cause light to bend the LEAST after traveling through air?

• Diamond

• Crown Glass

• Water

• Turpentine Oil

Tags

NGSS.MS-PS4-2

If you look through a magnifying glass at an object that is more than one focal length away, the image you see will be ______ than the object.

• upright and larger

• inverted and smaller

• inverted and larger

• upright and smaller

___ is when light travels through a material and bends.

• Diffraction
• Dispersion
• Mirage
• Refraction

Which describes a convex lens?

• triangular in shape
• more transparent in the middle
• thicker on the edges than in the middle
• thicker in the middle than on the edges

When light waves move from passing through air to passing through a glass lens when happens to them?

• They slow down and change direction

• They speed up and change direction

• They maintain the same speed and change direction

• They maintain their same speed and direction

Tags

NGSS.MS-PS4-2