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Grade 4 Science · Light and Sound

Grade 4 Light and Sound Practice Test

Build Grade 4 Science skills with five 10-question practice tests on light sources, shadows, reflection, refraction, sound vibrations, pitch, volume, and hearing safety.

Light and Sound Practice Tests

These Grade 4 Science practice tests help students explain how light and sound carry energy and interact with materials. Students identify light sources, shadows, transparent and opaque materials, reflection, refraction, sound vibrations, pitch, volume, echoes, and hearing safety.

Skills covered

  • Identifying light sources and materials that transmit or block light
  • Explaining shadows, reflection, and refraction
  • Describing sound as a result of vibrations
  • Comparing pitch and volume
  • Explaining echoes and sound paths
  • Applying light and sound ideas to instruments, communication, and safe designs

How to use these practice tests

For light questions, identify the source and notice whether light is blocked, reflected, or bent. For sound questions, identify what vibrates, how the vibration travels, and whether the sound is high or low in pitch or loud or soft in volume.

For more Grade 4 Science practice, return to the Grade 4 Science category.

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4. Test

Grade 4 Light and Sound Practice Tests

A 10-question Grade 4 Science practice test on light sources, shadows, transparent materials, reflection, refraction, sound vibrations, pitch, volume, and hearing safety.

Read each situation and choose the answer that best explains how light or sound behaves.

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

What happens when a guitar string is plucked?

Please select an answer first.

Correct answer: A

The correct answer is The string vibrates and makes sound..

  1. Observe the situation: Look for a light source, a blocked or reflected ray, a vibration, or a sound path.
  2. Apply the science rule: The plucked string vibrates and transfers energy to the surrounding air.
  3. Confirm the answer: The correct choice is The string vibrates and makes sound..

The plucked string vibrates and transfers energy to the surrounding air.

2. QuestionMultiple choice

What part of a drum vibrates to make sound?

Please select an answer first.

Correct answer: B

The correct answer is The stretched drumhead.

  1. Observe the situation: Look for a light source, a blocked or reflected ray, a vibration, or a sound path.
  2. Apply the science rule: The drumhead vibrates when struck and produces sound.
  3. Confirm the answer: The correct choice is The stretched drumhead.

The drumhead vibrates when struck and produces sound.

3. QuestionMultiple choice

How does a flute produce sound?

Please select an answer first.

Correct answer: C

The correct answer is Vibrating air inside the instrument produces sound..

  1. Observe the situation: Look for a light source, a blocked or reflected ray, a vibration, or a sound path.
  2. Apply the science rule: Blowing makes the air column inside the flute vibrate.
  3. Confirm the answer: The correct choice is Vibrating air inside the instrument produces sound..

Blowing makes the air column inside the flute vibrate.

4. QuestionMultiple choice

What energy change happens in a speaker?

Please select an answer first.

Correct answer: D

The correct answer is Electrical energy changes into sound energy..

  1. Observe the situation: Look for a light source, a blocked or reflected ray, a vibration, or a sound path.
  2. Apply the science rule: Electrical signals make the speaker parts vibrate and produce sound.
  3. Confirm the answer: The correct choice is Electrical energy changes into sound energy..

Electrical signals make the speaker parts vibrate and produce sound.

5. QuestionMultiple choice

What does a microphone usually do?

Please select an answer first.

Correct answer: A

The correct answer is Changes sound vibrations into electrical signals..

  1. Observe the situation: Look for a light source, a blocked or reflected ray, a vibration, or a sound path.
  2. Apply the science rule: A microphone detects sound vibrations and converts them into signals.
  3. Confirm the answer: The correct choice is Changes sound vibrations into electrical signals..

A microphone detects sound vibrations and converts them into signals.

6. QuestionMultiple choice

How does a string telephone carry a voice?

Please select an answer first.

Correct answer: B

The correct answer is Vibrations travel through the tight string from one cup to the other..

  1. Observe the situation: Look for a light source, a blocked or reflected ray, a vibration, or a sound path.
  2. Apply the science rule: The voice makes vibrations that travel along the string and vibrate the other cup.
  3. Confirm the answer: The correct choice is Vibrations travel through the tight string from one cup to the other..

The voice makes vibrations that travel along the string and vibrate the other cup.

7. QuestionMultiple choice

Which material would help make a room quieter?

Please select an answer first.

Correct answer: C

The correct answer is Soft foam on the walls.

  1. Observe the situation: Look for a light source, a blocked or reflected ray, a vibration, or a sound path.
  2. Apply the science rule: Soft foam can absorb some sound energy and reduce reflections.
  3. Confirm the answer: The correct choice is Soft foam on the walls.

Soft foam can absorb some sound energy and reduce reflections.

8. QuestionMultiple choice

Which signal could be used to communicate across a dark field without sound?

Please select an answer first.

Correct answer: D

The correct answer is A flashing light.

  1. Observe the situation: Look for a light source, a blocked or reflected ray, a vibration, or a sound path.
  2. Apply the science rule: A flashing light can carry a visible message across a distance.
  3. Confirm the answer: The correct choice is A flashing light.

A flashing light can carry a visible message across a distance.

9. QuestionMultiple choice

What part of the ear receives vibrations from sound?

Please select an answer first.

Correct answer: A

The correct answer is The eardrum.

  1. Observe the situation: Look for a light source, a blocked or reflected ray, a vibration, or a sound path.
  2. Apply the science rule: Sound vibrations make the eardrum vibrate so the ear can process the sound.
  3. Confirm the answer: The correct choice is The eardrum.

Sound vibrations make the eardrum vibrate so the ear can process the sound.

10. QuestionMultiple choice

Which change would usually make a string instrument produce a lower pitch?

Please select an answer first.

Correct answer: B

The correct answer is Use a looser or longer vibrating string..

  1. Observe the situation: Look for a light source, a blocked or reflected ray, a vibration, or a sound path.
  2. Apply the science rule: A looser or longer string generally vibrates more slowly and produces a lower pitch.
  3. Confirm the answer: The correct choice is Use a looser or longer vibrating string..

A looser or longer string generally vibrates more slowly and produces a lower pitch.

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Frequently asked questions about Grade 4 Light and Sound

What makes a shadow?

A shadow forms when an opaque object blocks light from reaching a surface behind it.

What makes sound?

Sound is produced when an object vibrates and transfers energy through a medium such as air, water, or a solid.

How many questions are on this page?

The page includes five mini tests with 10 questions each, for 50 Grade 4 Light and Sound questions in total.