Lesson 3 Refraction

If a light ray enters a glass medium from air, what is likely to happen?

• It will speed up and bend away from the normal.
• It will change color.
• It will continue in a straight line.
• It will slow down and bend towards the normal.

Tags

NGSS.MS-PS4-2

What happens to light when it passes from air into water?

• It slows down and changes direction.
• It disappears completely.
• It travels at the same speed and direction.
• It speeds up and changes direction.

Tags

NGSS.MS-PS4-2

Which of the following best describes refraction?

• The reflection of light off a mirror.
• The absorption of light by a surface.
• The change in direction of light as it changes speed in different media.
• The bending of light as it travels through a vacuum.

Tags

NGSS.MS-PS4-2

How does the index of refraction affect light?

• It determines how fast light travels in a vacuum.
• It indicates how much a medium can change the direction of light.
• It measures the brightness of light.
• It affects the color of light.

Which lens type causes light rays to spread apart?

• Concave lens.
• Biconcave lens.
• Convex lens.
• Biconvex lens.

How does the curvature of a lens affect light refraction?

• It has no effect on light refraction.
• More curvature causes light to diverge more.
• Less curvature causes light to converge more.
• More curvature causes light to converge more.

What is the focal point of a lens?

• The point where light rays are absorbed.
• The point where light rays converge after passing through the lens.
• The point where light rays reflect off the lens.
• The point where light rays diverge.

What type of image does a convex lens form when the object is placed closer than one focal length?

• Inverted and larger.
• Virtual and larger.
• Inverted and smaller.
• Real and the same size.

If an object is placed more than one focal length from a convex lens, what type of image is formed?

• Virtual and larger.
• Upright and the same size.
• Real and larger.
• Inverted and smaller.

What is a virtual image?

• An image formed when light rays converge.
• An image that is always larger than the object.
• An image that can be projected on a screen.
• An image formed when your brain interprets refracted rays as moving in straight lines.