Light and Sound Waves Review

The image shows what we did in class with the object in the cup of water.  Because of the different speed light is ______________ (absorbed, reflected, refracted) and the pencil looks different.

• Reflected

• Absorbed

• Refracted

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Which travels faster: sound or light?

• light

• sound

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Sound waves can travel through all three states of matter. Which of the following best explains why sound travels most quickly through a solid?

• Solids always produce an echo, which makes the sound seem louder to the human ear.

• Only solids allow the vibrations to travel from one atom (particle) to another.

• In solids, the atoms (particles) are closest together, which allows the vibrations to travel rapidly from one to another through the object.

• Sound does not travel quickly through a solid. It travels most rapidly through a gas.

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Which letter shows reflection? 

• Pathway A

• Pathway B

• Pathway C

• Pathway D

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When ALL light can pass through an object such as a clean glass window we call it -

• transparent

• opaque

• translucent

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Sound is a

• mechanical, transverse wave

• electromagnetic, transverse wave

• electromagnetic, longitudinal wave

• mechanical, longitudinal wave

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If the sun were to disappear right now, we wouldn't know about it for 8 minutes because it takes 8 minutes

• to process this information through an average i. brain

• for light to travel from the sun to Earth.

• for the sun to disappear.

• all of the above

Compared to its speed in air, the speed of light in water is

• slower

• the same

• faster

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Electromagnetic waves with higher frequencies have wavelengths that are

• shorter

• longer

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Light waves are

• longitudinal waves.

• transverse waves.

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