𝕎𝕒𝕧𝕖 𝔹𝕖𝕙𝕒𝕧𝕚𝕠𝕣 (Pre)

Scientists use electromagnetic waves to detect supernovas. Why are electromagnetic waves used instead of sound waves?

• Electromagnetic waves travel slower than sound waves.

• Electromagnetic waves can travel in vacuums.

• Electromagnetic waves are created by physical vibrations.

• Electromagnetic waves cannot be absorbed.

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NGSS.HS-PS4-3

NGSS.HS-PS4-5

Which of the following is a true statement about waves?

• Waves can transfer energy when they interact with matter.

• All waves travel longitudinally and compressionally at the same time.

• All waves require a medium through which they can travel.

• Waves are never affected when they interact with matter.

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NGSS.MS-PS4-1

NGSS.MS-PS4-2

Sunlight shining through a clear window hits Jeremy's face while he does his homework. He uses a large wooden block to cover the window. What do the wooden block and the clear window demonstrate?

• Visible light can be completely absorbed by all materials.

• Visible light can be completely reflected by all materials.

• Visible light can be transmitted only through certain materials.

• Visible light can be transmitted through all materials.

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NGSS.MS-PS4-2

Judging from the diagram, which of the following statements is true?

• A sound wave's wavelength shortens when it travels from cold air into warm air.

• Sound travels at the same speed through both cold and warm air.

• Sound travels faster through cold air than through warm air.

• Sound travels faster through warm air than through cold air.

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NGSS.MS-PS4-1

Sam is standing in an empty auditorium. He yells and hears his voice echo. What is happening to the sound to cause this echo?

• distribution of the sound waves through the auditorium

• transmission of the sound waves within his ears

• absorption of the sound waves by his voice

• reflection of sound waves off the walls

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NGSS.MS-PS4-2

When the light source is turned on, the scientist observes that no light is detected on the far side of the substance. What is the best interpretation for this observation?

• The light was both reflected and transmitted by the substance.

• The light was both absorbed and reflected by the substance.

• The light was either reflected or transmitted by the substance.

• The light was either absorbed or reflected by the substance.

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NGSS.MS-PS4-2

What scientific property is illustrated by these images?

• The angles at which both the beam and the waves reflect are always perfectly straight.

• The exact angle at which the beam and wave strike the surface is the same angle at which they are reflected.

• There is no way of predicting the angle at which a wave is reflected.

• The reflected beam and wave possess more electrical energy as they've each impacted an object.

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NGSS.MS-PS4-2

How is sound absorption different than light absorption?

• Sound absorption depends more on the thickness of a material than its color.

• Sound waves cannot be absorbed due to their structure.

• Sound absorption depends primarily on the distance the wave travels before it is absorbed.

• Sound absorption happens much faster than light absorption.

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NGSS.MS-PS4-1

NGSS.MS-PS4-2

What happens to the sound wave when it passes from the concrete into the mud?

• Its direction remains the same but speed changes.

• Its direction changes but speed remains the same.

• Its direction and speed changes.

• Its direction and speed remains the same.

Tags

NGSS.MS-PS4-2

A whale is swimming in the ocean. It communicates with another whale by sending out a sound. Which of the following best describes how the sound gets to the other whale?

• The sound is reflected in the water before it gets to the other whale.

• The sound is transmitted through water until it reaches the other whale.

• All of the sound is diffused in the water until only a faint sound reaches the other whale.

• All of the sound absorbed by water changes to heat before getting to the other whale.

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NGSS.MS-PS4-2