Light and the Electromagnetic Spectrum

The diagram shows the relative positions of a light source, apple, paper, and person. The person can’t see the apple. Which of the following correctly describes the light interactions taking place in the diagram?

• Light is absorbed by, not transmitted through, the paper.

• Light is reflected off the apple, but absorbed by the light source.

• Light from the light source is reflected only off the apple.

• Light is transmitted through the paper and then reflected off the apple.

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NGSS.MS-PS4-2

The idea that light is not matter is supported by which of the following evidence?

• Light bounces off most objects.

• Light can be separated into colors

• Light can be absorbed by objects.

• Light does not have mass or volume.

The diagrams provided here represent two light waves. Which conclusion is supported by the data provided in the diagrams?

• Light Wave #1 will appear brighter than Light Wave #2.

• Light Wave #1 will be a different color than Light Wave #2.

• Light Wave #1 will reflect more easily than Light Wave #2.

• Light Wave #1 will travel in a straight line, but not Light Wave #2.

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NGSS.MS-PS4-1

NGSS.MS-PS4-2

A rainbow happens when sunlight passes through water droplets in the air. Which of the following best explains why?

• Water droplets of different sizes filter out light of different colors.

• Different chemicals in the water get energy and give off light of different colors.

• Light of different colors travels at different speeds through different-sized water droplets.

• Light of different wavelengths is bent at different angles.

Humans see different colors because our eyes are responding to light that is different in which characteristic?

• Speed

• Amplitude

• Angle

• Wavelength

A student places a pencil in a glass of water and observes that the pencil appears to be broken. Which of these provides the best explanation for why the pencil appears broken?

• The pencil absorbs all the light rays that hit it.

• Water reflects light rays away from the pencil.

• Light rays are bent by the water in the glass

• The surface of the water reflects light rays.

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NGSS.MS-PS4-2

The illustration shows the path of a laser leaving a laser pointer. At what point is the laser being absorbed?

• Point A

• Point B

• Point C

• Point D

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NGSS.MS-PS4-1

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The distance from Earth to the moon can be accurately calculated by pointing high-powered lasers onto the moon’s surface. The time it takes for the light to return is used to find the distance. To make this possible, astronauts on the Apollo 11 moon mission had to place a device on the moon that would–

• store the laser light for future use.

• bounce the laser light back to Earth.

• allow the laser light to pass through.

• change the frequency of the laser light.

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NGSS.MS-PS4-2

Which of the following is the best example of an object absorbing light?

• A black sweater in the sun

• A clean window in the sun

• A curved mirror in the sun

• A long shadow in the sun

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NGSS.MS-PS4-2

Solar panels generate electricity using photovoltaic cells that receive sunlight. To protect these cells from moisture while allowing sunlight to pass through, engineers must design a cover for the solar panel that is–

• waterproof and transmits light

• very flexible and reflects light.

• stronger than steel and bends light.

• cold to the touch and absorbs light.

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NGSS.MS-ETS1-1

NGSS.MS-ETS1-2