Unit 3 Waves

This illustration shows three different waves traveling through the same medium. How do the waves differ from one another?

• A The waves travel at different speeds.

• B The waves have different wavelengths.

• C The waves carry different amounts of energy.

• D The waves are a different distance from the source.

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NGSS.MS-PS4-1

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The images below show a transverse wave and a longitudinal wave.

• A Both have wavelengths.

• B Neither has wavelengths.

• C Neither uses energy to move.

• D Both can move in only one type of medium.

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NGSS.MS-PS4-1

Sound is produced by:

• A electrical signals in the brain

• B radiation from electromagnetic waves

• C The vibration of a medium

• D the presence of a vacuum

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A class made a solar cooker out of a large can. What color should they paint the can in order to collect the most heat?

• A black

• B green

• C pink

• D white

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What type of energy is transmitted from the Sun to Earth through space?

• A electrical energy

• B kinetic energy

• C electromagnetic energy

• D heat energy

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NGSS.MS-PS4-2

Which choice shows the path of sound traveling through the ear?

• A hammer-stirrup-anvil-eardrum-ear canal

• B ear canal-eardrum - hammer -stirrup anvil

• C ear canal-eardrum-hammer-anvil-stirrup

• D eardrum-ear canal-hammer-anvil-stirrup

Which statement best explains how music is converted into electrical signals in a person's brain?

• A Music makes the eardrum vibrate. The eardrum's vibrations are then transmitted to the outer which converts the vibrations into electrical signals that are sent to the brain.

• BMusic makes the outer ear vibrate. The outer ear's vibrations are then transmitted to the eardrum, which converts the vibrations into electrical signals that are sent to the brain.

• CMusic makes the inner ear vibrate. The inner ear's vibrations are then transmitted to the eardrum, which converts the vibrations into electrical signals that are sent to the brain.

• DMusic makes the eardrum vibrate. The eardrum's vibrations are then transmitted to the inner ear, which converts the vibrations into electrical signals that are sent to the brain.

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Which best explains the relationship between the speed of sound and the medium through which it passes?

• A Sound travels faster in air because of the decreased distance between air particles

• B Sound travels slower in solids because of the decreased distance between solid particles

• C Sound travels faster in solids because of the increased distance between solid particles

• D Sound travels slower in air because of the increased distance between air particles

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NGSS.MS-PS4-2

Which of the following is utilized by the eye to refract light, adjusting sight for both near and far objects?

• A cornea

• B pupil

• C lens

• D retina

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NGSS.MS-PS4-2

Which statement best describes the relationship between the frequency and the wavelength of waves?

• A As frequency increases, wavelength gets longer.

• B As frequency increases, wavelength gets shorter.

• C As wavelength decreases, frequency remains the same.

• D As wavelength changes, there is no change in frequency.

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