CBSE Class 8 Science Worksheet - Sound Part C

Scroll down for PDF

CBSE Class 8 Science Worksheet - Sound Part C - Practice worksheets for CBSE students. Prepared by teachers of the best CBSE schools in India.


GSc. Class - VIII




Q1. Fill in the blanks:

1. Sound is produced by ________________ bodies.

2. In humans, the sound is produced by the ____________.

3. Sound always travels through a ___________. It cannot travel in a ____________.

4. The thin membrane called _____________ present in our ears, senses the vibrations and sends them as signals to the _____________.

5. The no. of vibrations per second is called ______________. It is expressed in _____________.

6. Loudness of sound is proportional to the square of the ____________

7. Larger is the amplitude of vibration, the __________ is the sound.

8. Higher the frequency of vibration, the higher is the ____________.

9. A bird makes ____________ sound whereas a lion makes ___________ sound. (low pitched/high pitched)

10. For human ears, the range of audible frequency is from _____________Hz. to ______________ Hz.

Q2. Answer in one word:

1. Two important properties of any sound.

2. Time taken by a vibrating body to complete one vibration.

3. Vibrations of frequency higher than 20,000Hz.

4. Vibrations of frequency lower than 20 Hz.

5. The frequency of a vibrating body that makes 512 vibrations in a second.

6. Unwanted and unpleasant sounds.

7. It determines the shrillness or pitch of a sound.

8. Length of vocal chords in men.

9. Name any four causes of noise pollution our surroundings.

10. Name any two health related problems caused due to noise pollution.

Q3. Answer the following:

1. Describe how is sound produced by humans?

2. Explain how the human ear drum helps them to hear.

3. Define: a) Amplitude b) Time period c) Frequency

4. How is loudness of sound related to amplitude?

5. How is frequency of sound related to pitch?

6. What is noise pollution? How can it be controlled?

Students must free download and practice these worksheets to gain more marks in exams. CBSE Class 8 Science Worksheet - Sound Part C


Click on the text For more study material for Science please click here - Science

Latest NCERT & CBSE News

Read the latest news and announcements from NCERT and CBSE below. Important updates relating to your studies which will help you to keep yourself updated with latest happenings in school level education. Keep yourself updated with all latest news and also read articles from teachers which will help you to improve your studies, increase motivation level and promote faster learning

CBSE exams postponed in Delhi

Due to the increased tension in some parts of Delhi, Delhi government has decided to postpone the CBSE boards exams for class 10 and class 12 in North East Delhi schools only. The dates on which the exams will be scheduled again has not been notified by CBSE till now....

CBSE Board Exams to be executed as per normal schedule

The Central Board of Secondary Education (CBSE) announced on Saturday, the 29th of February’2020 that the Board examinations for standard X and XII will be executed according to the decided schedule from 2nd March’2020 onwards. This announcement also includes the areas...

Checking of Boards Answer Sheets Notice

As you all are aware that the boards exams have been postponed due to Corona Virus. You can refer to the notification issued by CBSE too. While the board exams were going on the checking of answer sheets were also going on. CBSE took really good measures to increase...

Delhi Government orders closure of all Primary Schools

Delhi Government orders closure of all Primary Schools till 31stMarch due to the CORONAVIRUS A much needed announcement by the Government of Delhi. On Thursday, the Delhi Government instructed all the schools of the state to close operations for the students of Pre-...

CBSE chairman Anita karwal wrote a motivational letter to board candidates

CBSE chairman Anita karwal wrote a motivational letter to board candidates before the CBSE board Exam The CBSE (Central Board of Secondary Education) class 10th and 12th board exams are starting from 15 February 2020. Not only the students, their parents are also tense...

CBSE Board examination 2020 Admit card

The admit card for CBSE 10th & 12th 2020 has been released online by the CBSE Board at The admit card is available to private as well as regular students. Private applicants may access the CBSE admit card 2020 by submitting their application number,...

Studies Today