Fundamentals of light

If the frequency of a wave decreases, the wave’s

• displacement decreases

• speed increases

• period decreases

• wavelength increases

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NGSS.HS-PS4-1

Allows little to no light through.

• Transparent
• Translucent
• Opal
• Opaque

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NGSS.MS-PS4-2

What happens when light hits an object you can see?

• The light turns corners.
• The light curves around the object.
• The object reflects the light.
• The light and the object do not form a shadow.

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NGSS.MS-PS4-2

Through what kind of matter does light move fastest?

• liquids
• air
• matter that is lighter in color
• matter that is in larger objects 

What happens to blue light when it hits a shirt that appears blue?

• The light is reflected.
• The light is absorbed.
• The light is refracted.
• The light is blocked.

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NGSS.MS-PS4-2

What is a property of a transparent object?

• Almost all of the light rays that reach it are scattered.
• Almost all of the light rays that reach it are absorbed.
• Almost all of the light rays that reach it are reflected.
• Almost all of the light rays that reach it pass through it.

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NGSS.MS-PS4-2

Which is translucent?

• tissue paper
• air
• wood
• clear plastic

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NGSS.MS-PS4-2

Which is transparent?

• a wooden fence
• clean water
• aluminum foil
• a purple balloon

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NGSS.MS-PS4-2

If you wanted a gift to be a surprise, what kind of container would you put it in?

• transparent
• thick
• opaque
• translucent

The moon is a source of light.

• True
• False