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Waves and Sound Practice Tests

These Grade 11 Science practice tests examine wave properties, frequency, wavelength, amplitude, sound, resonance, the Doppler effect, interference, standing waves, electromagnetic waves, and experimental analysis.

Skills covered

  • Using \(v=f\lambda\) and \(T=1/f\) to connect wave speed, frequency, wavelength, and period
  • Explaining sound pitch, loudness, intensity, echoes, resonance, and the Doppler effect
  • Analyzing reflection, refraction, diffraction, interference, polarization, nodes, antinodes, and harmonics
  • Distinguishing mechanical and electromagnetic waves and applying boundary conditions
  • Interpreting wave experiments, graphs, repeated trials, uncertainty, and systematic error

How to use these practice tests

Identify the wave type and medium first. Write the relevant relationship, keep units consistent, and connect the mathematical result to the physical behavior of the wave.

For more Grade 11 Science practice, return to the Grade 11 Science category.

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Grade 11 Waves and Sound Practice Tests

Practice Grade 11 Science questions about wave properties, sound, resonance, interference, standing waves, electromagnetic waves, and experimental analysis.

Choose the best answer. Identify the medium and wave type, use v=fλ, track units, and explain interference, resonance, and experimental evidence.

10 Questions
0/10 Questions0 %
Correct 0
Incorrect 0
Unanswered 10
1. QuestionMultiple choice

Which type of wave can travel through a vacuum?

Please select an answer first.

Correct answer: A

The correct answer is An electromagnetic wave.

  1. Identify the wave model: Determine the medium, wave type, frequency, wavelength, amplitude, and direction described in the question.
  2. Apply the wave relationship: Electromagnetic fields can propagate through vacuum, while mechanical waves require interacting particles.
  3. Check units and physical meaning: The correct answer is An electromagnetic wave.

Electromagnetic fields can propagate through vacuum, while mechanical waves require interacting particles.

2. QuestionMultiple choice

What is the approximate speed of electromagnetic waves in vacuum?

Please select an answer first.

Correct answer: B

The correct answer is 3.00×108 m/s3.00\times10^8\,\text{m/s}.

  1. Identify the wave model: Determine the medium, wave type, frequency, wavelength, amplitude, and direction described in the question.
  2. Apply the wave relationship: In vacuum, electromagnetic waves travel at (c\approx3.00\times10^8\,\text{m/s}).
  3. Check units and physical meaning: The correct answer is 3.00×108 m/s3.00\times10^8\,\text{m/s}.

In vacuum, electromagnetic waves travel at (c\approx3.00\times10^8\,\text{m/s}).

3. QuestionMultiple choice

What is a harmonic in a resonating system?

Please select an answer first.

Correct answer: C

The correct answer is A frequency that is an integer multiple of a fundamental frequency.

  1. Identify the wave model: Determine the medium, wave type, frequency, wavelength, amplitude, and direction described in the question.
  2. Apply the wave relationship: Harmonics occur at integer multiples of the fundamental and can form allowed standing-wave patterns.
  3. Check units and physical meaning: The correct answer is A frequency that is an integer multiple of a fundamental frequency.

Harmonics occur at integer multiples of the fundamental and can form allowed standing-wave patterns.

4. QuestionMultiple choice

For a string fixed at both ends, what must occur at each end?

Please select an answer first.

Correct answer: D

The correct answer is A displacement node.

  1. Identify the wave model: Determine the medium, wave type, frequency, wavelength, amplitude, and direction described in the question.
  2. Apply the wave relationship: Fixed ends cannot move, so the standing-wave displacement must be zero there.
  3. Check units and physical meaning: The correct answer is A displacement node.

Fixed ends cannot move, so the standing-wave displacement must be zero there.

5. QuestionMultiple choice

What is the fundamental wavelength on a string fixed at both ends of length L?

Please select an answer first.

Correct answer: A

The correct answer is λ1=2L\lambda_1=2L.

  1. Identify the wave model: Determine the medium, wave type, frequency, wavelength, amplitude, and direction described in the question.
  2. Apply the wave relationship: The fundamental has one half-wavelength across the string, so (L=\lambda_1/2) and (\lambda_1=2L).
  3. Check units and physical meaning: The correct answer is λ1=2L\lambda_1=2L.

The fundamental has one half-wavelength across the string, so (L=\lambda_1/2) and (\lambda_1=2L).

6. QuestionMultiple choice

What determines the speed of a wave on a stretched string?

Please select an answer first.

Correct answer: B

The correct answer is The string's tension and linear mass density.

  1. Identify the wave model: Determine the medium, wave type, frequency, wavelength, amplitude, and direction described in the question.
  2. Apply the wave relationship: For an ideal string, speed is (v=\sqrt{T/\mu}), so tension and mass per length determine it.
  3. Check units and physical meaning: The correct answer is The string's tension and linear mass density.

For an ideal string, speed is (v=\sqrt{T/\mu}), so tension and mass per length determine it.

7. QuestionMultiple choice

What happens to a pulse reflected from a fixed end?

Please select an answer first.

Correct answer: C

The correct answer is It returns inverted.

  1. Identify the wave model: Determine the medium, wave type, frequency, wavelength, amplitude, and direction described in the question.
  2. Apply the wave relationship: A fixed boundary reverses the displacement of the reflected pulse, producing an inverted pulse.
  3. Check units and physical meaning: The correct answer is It returns inverted.

A fixed boundary reverses the displacement of the reflected pulse, producing an inverted pulse.

8. QuestionMultiple choice

What happens to a pulse reflected from a free end?

Please select an answer first.

Correct answer: D

The correct answer is It returns upright without inversion.

  1. Identify the wave model: Determine the medium, wave type, frequency, wavelength, amplitude, and direction described in the question.
  2. Apply the wave relationship: A free boundary permits the end to move, so the reflected displacement is not inverted.
  3. Check units and physical meaning: The correct answer is It returns upright without inversion.

A free boundary permits the end to move, so the reflected displacement is not inverted.

9. QuestionMultiple choice

Why does a resonance tube produce louder sound at certain lengths?

Please select an answer first.

Correct answer: A

The correct answer is The air column supports a standing wave that reinforces the driving sound.

  1. Identify the wave model: Determine the medium, wave type, frequency, wavelength, amplitude, and direction described in the question.
  2. Apply the wave relationship: At resonant lengths, reflected waves form a compatible standing-wave pattern and amplify the sound.
  3. Check units and physical meaning: The correct answer is The air column supports a standing wave that reinforces the driving sound.

At resonant lengths, reflected waves form a compatible standing-wave pattern and amplify the sound.

10. QuestionMultiple choice

What happens to the wavelength of a sound wave when it enters a medium where sound travels faster but frequency is unchanged?

Please select an answer first.

Correct answer: B

The correct answer is The wavelength increases.

  1. Identify the wave model: Determine the medium, wave type, frequency, wavelength, amplitude, and direction described in the question.
  2. Apply the wave relationship: With fixed frequency, (\lambda=v/f), so a larger speed gives a larger wavelength.
  3. Check units and physical meaning: The correct answer is The wavelength increases.

With fixed frequency, (\lambda=v/f), so a larger speed gives a larger wavelength.

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