HARD
Lower Secondary Stage 8
IMPORTANT
Earn 100

The diagram shows a kettle drum. Write a short explanation of How the drum produces a sound. Question Image

Important Questions on Sound

MEDIUM
Lower Secondary Stage 8
IMPORTANT
Cambridge Lower Secondary Science Stage 8 : Workbook>Chapter 8 - Sound>Exercise 1>Q 7

The diagram shows a metal ruler attached to a table, so that half of the ruler sticks out over the edge. Lily finds she can make a sound by bending the ruler at the end and releasing it.

Question Image

Describe the steps in the process that causes a sound to be made.

MEDIUM
Lower Secondary Stage 8
IMPORTANT
Cambridge Lower Secondary Science Stage 8 : Workbook>Chapter 8 - Sound>Exercise 1>Q 8

Look at the diagram. An electric circuit including a buzzer is set up inside a glass tank.

Question Image
Mia switches the circuit on so the buzzer makes a loud noise. She then switches on a pump that gradually pumps the air out of the tank. Mia observes that the sound gets quieter until she cannot hear the sound at all. Explain Mia’s observations.

MEDIUM
Lower Secondary Stage 8
IMPORTANT
Cambridge Lower Secondary Science Stage 8 : Workbook>Chapter 8 - Sound>Exercise 2>Q 1

Look at the diagram of a human ear. Complete the diagram by writing in the labels. Use words from the list below. The first label has been completed for you.

Question Image

[ear canal, eardrum, ossicles, nerve]

MEDIUM
Lower Secondary Stage 8
IMPORTANT
Cambridge Lower Secondary Science Stage 8 : Workbook>Chapter 8 - Sound>Exercise 2>Q 2
Explain how sounds can damage our ears.
EASY
Lower Secondary Stage 8
IMPORTANT
Cambridge Lower Secondary Science Stage 8 : Workbook>Chapter 8 - Sound>Exercise 2>Q 4
Choose the correct estimate of the speed of sound in air.
MEDIUM
Lower Secondary Stage 8
IMPORTANT
Cambridge Lower Secondary Science Stage 8 : Workbook>Chapter 8 - Sound>Exercise 2>Q 8
Engineers testing steel rails can use a microphone to record the sounds of an approaching train. The microphone records the sound of an approaching train for many seconds before the engineers can hear it themselves. The results are shown on an oscilloscope screen. Use your knowledge of the speed of sound to explain what the engineers observe.
MEDIUM
Lower Secondary Stage 8
IMPORTANT
Cambridge Lower Secondary Science Stage 8 : Workbook>Chapter 8 - Sound>Exercise 2>Q 6
Anastasia is pregnant and has been asked to go to the hospital for an ultrasound scan. Anastasia does not know what ultrasound is. She is worried about the test. Write a short explanation of ultrasound for her. Make sure you include an explanation of why the test will not damage her baby.
HARD
Lower Secondary Stage 8
IMPORTANT
Cambridge Lower Secondary Science Stage 8 : Workbook>Chapter 8 - Sound>Test-style questions>Q 4
Doctor Strange was visited by a family. Some of them were having problems hearing some sounds.
The doctor decided to test each family members' hearing by measuring the highest frequency sound they could hear. The loudness of each sound was kept the same. The results are shown in this table.
Name  Age Highest frequency that can be heard (Hz)
Gabriella 74 9000
Carlos 50 16500
Safia 44 18000
Lily 24 8000
Ahmed 17 20000
Imagine you are Doctor Strange. Who would you recommend have further tests to check whether they might have a disease or other problem affecting their hearing?