Concave Convex Lenses

When refraction occurs, light waves __.

• change color

• change direction

• change wavelength

Tags

NGSS.MS-PS4-2

Aila is creating a model of a double convex lens. She draws horizontal lines to show light rays traveling toward the lens. How should Aila draw the light rays after they move through the lens?

• Aila should draw them converging to a point.

• Aila should draw them diverging without intersecting.

• Aila should draw them diffracting and moving upward.

• Aila should draw them continuing in the same direction.

Tags

NGSS.MS-PS4-2

A student must create a mode of a lens. The lens must be able to focus light into a small space. Which best describes the type of lens the student should model?

• The student should model a concave lens because it directs light toward the center of the lens.

• The student should model a convex lens because it directs light toward the center of the lens.

• The student should model a concave lens because it gathers bands of color together to form white light.

• The student should model a convex lens because it gathers bands of color together to form white light.

Tags

NGSS.MS-PS4-2

A student is creating a model of a convex lens. Which quality of a convex lens should the student include in the model?

• light is reflected

• light is focused

• light is spread out

• light is broken into bands of different colors

A student is building a model of a lens that will spread light over the biggest space. Which best describes the type of model the student should make?

• The student should make a convex lens model because it breaks light down into bands of color.

• The student should make a concave lens model because it breaks light down into bands of color.

• The student should make a convex lens model because it directs light away from the center of the lens.

• The student should make a concave lens model because it directs light away from the center of the lens.

Tags

NGSS.MS-PS4-2

Which statement best describes how light and lenses work together?

• Lenses change the direction of light rays by bending them.

• Lenses break up white light into the spectrum.

• Lenses cause light rays to spread apart.

• Lenses cause objects to appear larger.

Tags

NGSS.MS-PS4-2

A telescope is a tool that helps people observe distant objects. In the simplest telescope design, incoming light hits a lens and is focused to a single point. This focused image is then magnified by a second lens so that it is roughly the same size as an observer's pupil. Which of the following wave behaviors plays the most important role in the functioning of this type of telescope?

• refraction

• interference

• resonance

• reflection

Tags

NGSS.MS-PS4-2

Which of these describes a concave lens?

• focuses light

• breaks light down into bands of color

• spreads light out

• reflects light

The time line below shows how the use of lenses to magnify objects has changed over the last 2,000 years. What does the time line suggest about scientific knowledge throughout the years?

• It suggests that scientific knowledge began when the first convex lens was developed, since complex lenses opened the door to all scientific studies.

• It suggests that scientific knowledge changes over time, as shown by the new discoveries made about lenses leading to changes in their uses.

• It suggests that scientific knowledge does not change, as scientists work independently of each other and do not build on each other's ideas.

• It suggests that scientific knowledge is replaced and not modified, as exemplified by the single lens replacing multiple lenses.

Tags

NGSS.MS-ETS1-3

NGSS.MS-ETS1-4

Camden constructs a model of a double convex lens using two clear plastic circles that are round on one side and flat on the other. He attaches the circles at the edges. How does his model look?

• It is thinner in the middle and thicker on the edges.

• It is thicker on the left side and thinner on the right side

• It is thicker in the middle and thinner at the edges.

• It is completely flat from the middle to the edges.