Unit 6 Final Exam Review

Using the model, what do observer A and observer B experience?

• Observer A experiences a sound wave that is increasing in frequency and pitch, whereas observer B experiences a sound wave that is decreasing in frequency and pitch.

• Observer A experiences a sound wave that is decreasing in frequency and pitch, whereas observer B experiences a sound wave that is increasing in frequency and pitch.

• Observer A experiences a sound wave that is increasing in frequency and decreasing in pitch, whereas observer B experiences a sound wave that is decreasing in frequency and increasing in pitch.

• Observer A experiences a sound wave that is decreasing in frequency and increasing in pitch, whereas observer B experiences a sound wave that is increasing in frequency and decreasing in pitch.

What effect does increasing the energy of a sound wave have on its amplitude?

• Increasing the energy causes the amplitude to decrease, making the sound softer.

• Increasing the energy causes the amplitude to increase, making the sound louder.

• Increasing the energy causes the amplitude to remain unchanged, keeping the sound constant.

• Increasing the energy causes the amplitude to stop, resulting in no sound.

Tags

NGSS.MS-PS4-1

In longitudinal waves, the motion of the vibration is ________ to the direction in which the wave travels.

• parallel

• perpendicular

• transverse

• circular

Sound waves, ocean waves, and water waves are _________.

• electromagnetic

• mechanical

• circular

• polarized

Tags

NGSS.MS-PS4-2

To find amplitude, measure from

• crest to crest

• crest to trough

• trough to trough

• crest to rest/normal position

Tags

NGSS.MS-PS4-1

Using the diagram below, what is point B referring to?

• Crest

• Trough

• Amplitude

• Wavelength

Which of the following best explains how longitudinal and transverse waves transfer energy?

• In both longitudinal and transverse waves the energy is transferred horizontally.

• In both longitudinal and transverse waves the energy is transferred in an up and down direction.

• In longitudinal waves the energy is transferred in an up and down direction, and in transverse waves the energy is transferred horizontally.

• In longitudinal waves the energy is transferred horizontally, and in transverse waves the energy is transferred in an up and down direction.

Using the diagram below of a wave traveling through a slinky. What is point A referring to?

• Rarefaction

• Compression

• Wavelength

• Frequency

Tags

NGSS.MS-PS4-1

As the frequency of sound waves increases, the wavelength of the sound waves __________ and energy __________.

• increases, increases

• decreases, decreases

• decreases, increases

• increases, decreases

Tags

NGSS.MS-PS4-1

Why is lightning visible before thunder is heard?

• Sound travels slower than light can travel.

• Light needs a medium to travel through.

• Sound cannot reflect off of surfaces as easily as light.

• Sound is not processed by the brain as fast as light.