34 Quiz Standing Wave

What is a standing wave?

• A wave that travels continuously in one direction

• A wave that reflects back on itself and appears to be stationary

• A wave that dissipates energy quickly

• A wave that only exists in open spaces

Which of the following is a condition necessary for the formation of standing waves?

• The medium must be infinite

• The wave must be absorbed completely

• The wave must reflect back on itself

• The wave must travel faster than the speed of light

What are nodes in a standing wave?

• Points of maximum amplitude

• Points of zero amplitude

• Points where waves are absorbed

• Points where waves are emitted

What are antinodes in a standing wave?

• Points of zero amplitude

• Points of maximum amplitude

• Points where waves are absorbed

• Points where waves are emitted

Tags

NGSS.HS-PS4-1

Which of the following best describes harmonics in strings?

• The fundamental frequency only

• Frequencies that are multiples of the fundamental frequency

• Random frequencies that occur in a string

• Frequencies that decrease over time

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NGSS.HS-PS4-1

What is resonance in air columns?

• The absorption of sound waves

• The amplification of sound at specific frequencies

• The cancellation of sound waves

• The reflection of sound waves

Which of the following is an application of standing waves?

• Noise cancellation

• Musical instruments

• Radio signal transmission

• All of the above

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NGSS.HS-PS4-5

How do nodes and antinodes form in a standing wave on a string?

• Nodes form at points of destructive interference, and antinodes form at points of constructive interference

• Nodes form at points of constructive interference, and antinodes form at points of destructive interference

• Nodes and antinodes form randomly

• Nodes and antinodes form only at the ends of the string

Explain how harmonics are related to the length of a string.

• Harmonics are independent of the string length

• The length of the string determines the possible wavelengths and thus the harmonics

• Harmonics decrease as the string length increases

• Harmonics increase as the string length decreases

Describe the relationship between the frequency of a standing wave and its harmonics.

• The frequency of a standing wave is always lower than its harmonics

• The frequency of a standing wave is the same as its harmonics

• Harmonics are integer multiples of the fundamental frequency of the standing wave

• Harmonics are always half the frequency of the standing wave

Tags

NGSS.HS-PS4-1