Lenses Check-in Quiz 2025

Lenses work because of the way they interact with light waves. No matter what the shape of the lens when light waves pass through the lens, they ____________, and in this case they ________ on the focal point.

• bend, diverge

• reflect, converge

• refract, converge

• resonate, diverge

Tags

NGSS.MS-PS4-2

A convex lens bulges outward in its center. and it refracts light rays towards its center. Which represents a convex lens?

• A

• B

• A and B

• neither A or B

Tags

NGSS.MS-PS4-2

A concave lens is shown here. According to the model, a lens disperses rays after passing through it. Which item below most likely uses a concave lens to perform its typical function?

• a flashlight that emits light over a large surface

• a microscope that focuses an image for easy viewing by the observer

• a camera lens that focuses the light onto a magnetic or digital plate

• a laser pointer that allows a single point of light to light up a surface

A camper forgot to bring matches or flint to start a fire for the campout. They remember a trick that their physics teacher taught them where a magnifying lens can be used to start fires. Which statement describes how the magnifying lens successfully starts a fire?

• The magnifying glass acts as a convex lens that makes light converge on a point.

• The magnifying glass acts as a concave lens that disperses light across a wide area.

• The magnifying glass acts as a concave lens that converts light energy into heat energy.

• The magnifying glass acts as a mirror that reflects light into a single point.

Tags

NGSS.MS-PS4-2

A model of a convex lens and the behavior of light through the lens are shown here. Based on the model, which statement explains how light moves through the lens?

• The light diffracts through the lens and spreads out.

• • The light refracts through the lens and spreads out.

    The light refracts through the lens and spreads out.

• The light refracts through the lens and comes to a focal point.

• The light diffracts through the lens and comes to a focal point.

Why does light refract when it encounters the glass in a lens?

• because it speeds up, which causes it to bend

• because it slows down, which causes it to bend

• because it hits a dense medium, which causes it to bounce off

• because it gets absorbed, which causes it to lessen in intensity

  because it gets absorbed, which causes it to lessen in intensity

Tags

NGSS.MS-PS4-2

Microscopes can be used to magnify specimens that would otherwise be too small to see. Light passes through a series of lenses and a magnified image is observed by the viewer. Which model best represents the types of lenses used in a microscope to create a magnified image?

• Converging lenses are used to create a clear image at the focal point beyond the lens.

• Diverging lenses are used to disperse the light to form a larger image by scattering the light.

A near-sighted person uses glasses to create an image that is clearer for them to see. Which model of a lens best represents how glasses works and is matched with the appropriate description?

• Converging lenses will bring the focal point of the image sharper in the eye of the nearsighted person.

• Diverging lenses will allow the focal point to be in front of the eye so the person can see the object with more clarity.

Refraction is the bending of light as it changes in speed and direction when entering a medium. After light enters the substances (medium) listed; in which order will light travel the slowest to fastest?

• air, water, diamond, glass

• air, water, glass, diamond

• diamond, glass, water, air

• diamond, water, glass , air

Tags

NGSS.MS-PS4-2

The experiment set-up shown in the picture has a light-proof box with a small hole on one side. What will be the shape of the image of the arrow on the opposite wall?

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