The diagrams show oscilloscope measurements of four different sounds. Look at wave D. What is the period of wave D?

The period of wave is 0 . 4 s . The wave period is the time it takes to complete one cycle. The standard unit of a wave period is in seconds, and it is inversely proportional to the frequency of a wave, which is the number of cycles of waves that occur in one second. In other words, the higher the frequency of a wave, the lower the wave period.

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?

In the given table the name Lily with the age 24 will be recommended for further tests to check whether she might have a disease or other problem affecting her hearing. Note: As we age, it’s the upper frequencies we lose first. So by the time we hit middle-age, we can expect to hear up to around 14 , 000 Hz . Age-related hearing loss (or presbycusis) naturally develops as we age and our hearing can begin to deteriorate as a result of external factors, including the environment and existing medical conditions.

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.

Important Questions on Sound

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.

EASY

Lower Secondary Stage 8

IMPORTANT

Cambridge Lower Secondary Science Stage 8 : Workbook>Chapter 8 - Sound>Test-style questions>Q 1

The diagrams show oscilloscope measurements of sounds made by different animals. Match the sound to the animals in the list. (Choose from: bat, bluewhale, starling, human)

Question Image

A = _____

EASY

Lower Secondary Stage 8

IMPORTANT

Cambridge Lower Secondary Science Stage 8 : Workbook>Chapter 8 - Sound>Test-style questions>Q 1

The diagrams show oscilloscope measurements of sounds made by different animals. Match the sound to the animals in the list. (Choose from: bat, blue whale, starling, human)

Question Image

B = _____

EASY

Lower Secondary Stage 8

IMPORTANT

Cambridge Lower Secondary Science Stage 8 : Workbook>Chapter 8 - Sound>Test-style questions>Q 1

The diagram show oscilloscope measurements of sounds made by different animals. Match the sound to the animals in the list. (Choose from: bat, blue whale, starling, human)

Question Image

C = _____

MEDIUM

Lower Secondary Stage 8

IMPORTANT

Cambridge Lower Secondary Science Stage 8 : Workbook>Chapter 8 - Sound>Test-style questions>Q 2

The diagrams show oscilloscope measurements of four different sounds.
Question Image

Look at wave D. What is the period of wave D?

HARD

Lower Secondary Stage 8

IMPORTANT

Cambridge Lower Secondary Science Stage 8 : Workbook>Chapter 8 - Sound>Test-style questions>Q 3

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

MEDIUM

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	$17$	$20000$

Describe any pattern you can see in the results

HARD

Lower Secondary Stage 8

IMPORTANT

Cambridge Lower Secondary Science Stage 8 : Workbook>Chapter 8 - Sound>Test-style questions>Q 4

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?

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

Important Questions on Sound

Learn and Prepare for any exam you want !