Unit 1 Light and Matter (23-24)

When light rays strike the surface of a concave mirror, they are reflected and _____.

• grow dimmer

• come closer together

• lose energy

• spread farther apart

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NGSS.MS-PS4-1

NGSS.MS-PS4-2

When light rays strike the surface of a convex mirror, they are reflected and _____.

• grow brighter

• come closer together

• gain energy

• spread farther apart

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NGSS.MS-PS4-2

What type of energy can you sense with your eyes?

• thermal energy

• light energy

• electric energy

• sound energy

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NGSS.MS-PS4-1

NGSS.MS-PS4-2

What happens when light energy passes through an object?

• reflection

• refraction

• transmission

• absorption

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NGSS.MS-PS4-2

How does light travel?

• by refracting through space until it is absorbed

• light does not travel

• by reflecting through space until it is absorbed

• in a straight line until it hits an object

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NGSS.MS-PS4-2

Alex holds a piece of cardboard in front of a bright light and notes that no light passes through it. He concludes that the cardboard is 

• transparent

• opaque

• translucent

• transmitted

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NGSS.MS-PS4-2

How does light obey the law of reflection when it shines on a surface such as brushed stainless steel

• Light bends as it goes through the brushed stainless steel.

• Light slows down as it reaches the rough surface.

• Light reflects off of the brushed stainless steel exactly the same way it reflects off of a mirror.

• Light reflects off the bumpy surface of the brushed stainless steel in different directions.

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NGSS.MS-PS4-2

Tom wants to show his friend his new magical trick He challenged his friend that he can make his pencil appear broken without actually breaking the pencil. To demonstrate this, Tom placed the pencil in a glass of water and told his friend to take a look through the glass and the water from the side. Tom felt disappointed when his friend said it was not a trick and that he knows exactly what happened. Which best described Tom’s “trick”?

• refraction

• absorption

• transmission

• scattering

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NGSS.MS-PS4-2

Which of the following materials would reflect the most light?

• a dark brown carpet square

• a flat sheet of aluminum foil

• a bumpy, black rock

• a piece of red construction paper

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NGSS.MS-PS4-2

When you look in a mirror, which of the following causes your eye to be able to see your image?

• absorption

• refraction

• transmission

• reflection

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NGSS.MS-PS4-2