Light Waves Visible and Invisible

Select the statement below that demonstrates a cause and effect.

• Scientists call the entire range of all light the electromagnetic spectrum.

• Scattering is when light bounces off an object. The light goes in different directions.

• Reflection is when light hits an object.

• When a light wave hits an object, they are reflected.

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NGSS.MS-PS4-2

The article mentions: "REFLECTION is when light hits an object. Then, the light bounces off." Which ONE of the words below could be a synonym for REFLECTION?

• likeness

• absorption

• disappearance

• transparent

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NGSS.MS-PS4-2

DIFFRACTION means:

• when light hits another object and bounces off.

• when photons hit other molecules.

• when light bounces off an object.

• the bending of light.

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NGSS.MS-PS4-2

One type of invisible light is:

• ultraviolet

• photon

• electromagnetic

• scatter

A straw looks bent in water because:

• light travels slower in water than through air.

• light travels faster in water than through air.

• your eyes play tricks on you.

• you are seeing it in a vacuum.

Select all the TRUE statements:

• Darker colored objects absorb light energy.

• Lighter colored objects absorb less energy.

• Black pavement would be hotter than white side sidewalk.

• Lighter clothes would keep you cooler than darker clothes.

What detail in the article shows HOW scientists group different kinds of light energy?

• The electromagnetic spectrum includes light we can see. It also includes light we cannot see.

• Visible light is the type of light we can see. It includes the colors that we can see with our eyes.

• Darker colored objects absorb light energy. Lighter colored objects absorb less energy.

• Diffraction is the bending of light. Shining light through a prism diffracts light.

Which sentence from the section "Scatter" explains WHY the sky looks blue?

• Scattering is when light bounces off an object.

• Wavelength affects the amount of scattering.

• Sunlight hitting the ground looks colorless.

• These gas molecules scatter shorter wavelengths of light.

Which answer choice is a section title?

• How do waves behave?

• By NASA, adapted by Newsela staff

• "Absorption"

• A spectrometer is a tool.

What can a reader learn by looking at the article's section titles?

• the reason prisms create a rainbow out of light

• different ways that light can interact with objects

• the tools that scientists use to measure light energy

• different parts of the electromagnetic spectrum

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NGSS.MS-PS4-2