Visible Light and Electromagnetic Spectrum

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.

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NGSS.MS-PS4-2

What is the correct order of the visible light spectrum starting with the longer wavelength?

• Red, yellow, orange, blue, violet, indigo

• Violet, indigo, blue, green, yellow, orange, red

• Green, yellow, blue, indigo, red, orange

• Red, orange, yellow, green, blue, indigo, violet

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NGSS.MS-PS4-1

Which color has the longest wavelength?

• Yellow

• Red

• Green

• Purple

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-PS4-2

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

The statements below compare the similarities of ultraviolet light and microwaves. Which choice does NOT belong in this list?

• Neither can be seen by the human eye.

• . Scientists use both to study the structure of galaxies.

• They both have wavelengths that are longer than visible light

• They are both types of radiation emitted by the Sun.

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NGSS.MS-PS4-1

Examine the diagram of the electromagnetic spectrum shown above. Which category of electromagnetic waves has a wavelength of 10-8 m?

• Ultraviolet

• Radio waves

• Microwaves

• Red