Properties of Light and Sound

How does sunlight travel to Earth? 

• vibration

• radiation

• conduction

• convection

Which of the following is an example of dispersion?

• twinkling star

• bouncing of light

• appearing rainbow

What happens when we do not see colors?

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Why do we see objects as black?

• They absorb all the light.

• They reflect all the light.

• They refract all the light.

• They absorb then reflect some light.

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NGSS.MS-PS4-2

Why does the ruler with one end in the air and one end underwater appear bent?

• Light in the air is brighter than light in the water.

• The light reflected from the ruler moves in a curved path.

• Light moves through air faster than it moves through the water.

• Light moves through water at the same speed as it moves through air.

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NGSS.MS-PS4-2

What property of light is observed when a white light strikes a prism or droplets of water?

• dispersion

• refraction

• reflection

• speed

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NGSS.MS-PS4-2

In what medium does the sound travel the slowest?

• liquid

• gas

• solid

Air is needed for a steel to rust. What other substances can make a steel rust faster? 

I.water

II. oil

III. acid

IV. paint

• I only

• I and III

• II and III

• I, II and IV

This frying pan is made of thick copper. The handle is made of plastic.

Why is a copper pan good for cooking food?

• Copper does not rust.

• Copper is not magnetic.

• Copper conducts heat well.

• Copper conducts electricity.

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NGSS.MS-PS3-3

NGSS.MS-PS3-4

In which situation will sound travel the fastest?

• When someone is shouting at one another.

• When someone is simply talking to you from a distance.

• When someone is striking two stones while you are under a pool.

• When someone is knocking at a wall and your ear is on the other side of the wall.

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NGSS.MS-PS4-2