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Sound Waves and Vibrations — Free MYP1 Sciences Practice Questions
1QuestionEchoes and ReverberationConcept Practice
2 marks~3 minCriterion A
A person shouts near a large cliff. Arrow A shows the sound travelling from the person to the cliff. Arrow B shows the sound travelling from the cliff back to the person.
a
Identify which arrow represents the echo. [1]
b
Describe what happens to the sound to create an echo. [1]
Solutions
2QuestionHow Sound is Produced and TransmittedConcept Practice
4 marks~6 minCriterion D
A student tests three materials to see which blocks sound best. She puts a phone playing music inside a box made of each material and measures the loudness outside.
| Material | Loudness outside (dB) |
|---|---|
| Foam | 45 |
| Cardboard | 60 |
| Cotton | 52 |
a
Name the material that blocks sound the most. [1]
b
Describe what the data shows about how well foam blocks sound compared to cardboard. [1]
c
Identify one thing the student should keep the same in each test to make the results fair. Explain why it matters. [2]
Solutions
3QuestionEchoes and ReverberationConcept Practice
2 marks~3 minCriterion B
A student claps once in four different rooms — a small room, a hallway, a gymnasium, and a large empty hall — and measures how long the echo lasts each time.
a
Identify the independent variable and the dependent variable in this investigation. [1]
b
Identify one variable the student should keep the same to make this a fair test. [1]
Solutions
4QuestionEchoes and ReverberationConcept Practice
4 marks~6 minCriterion C
A student claps her hands near a cliff. The speed of sound in air is 340 m/s. She hears the echo after the times shown below.
Time delay (s): 0.5 — 1.0 — 1.5 — 2.0
Use the formula:
Time delay (s): 0.5 — 1.0 — 1.5 — 2.0
Use the formula:
a
Identify the distance to the cliff when the time delay is 0.5 s. Show your working. [1]
b
Describe how the distance to the cliff changes as the time delay increases. Use the values in the table to support your answer. [2]
c
A friend says: "Standing further from the cliff means you hear the echo sooner." Describe whether your friend is correct or incorrect, and explain why. [1]
Solutions
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