Skip to main content
Super TutorResources
Chapter 7 of 8
QuestionsNotesFlashcardsSummaryFormulasQuizConceptsSyllabusPlan
Flashcards

Sound

ICSE · Class 8 · Physics

Flashcards for Sound — ICSE Class 8 Physics. Quick Q&A cards covering key concepts, definitions, and formulas.

166 questions34 flashcards5 concepts

Interactive on Super Tutor

Studying Sound? Get the full interactive chapter.

Quizzes, flashcards, AI doubt-solver and a step-by-step study plan — built for flashcards and more.

Try Super Tutor — Free

1,000+ Class 8 students started this chapter today

34 Flashcards
Card 1Introduction to sound

What is sound?

Answer

Sound is a form of energy that produces a sensation of hearing. It is produced when a body vibrates.

Card 2Source of sound

Why is a vibrating body called a source of sound?

Answer

A vibrating body produces sound. Thus, each source of sound is a vibrating body. For example, a plucked string starts vibrating and produces sound.

Card 3Medium for sound

Why can two persons not hear each other on the moon?

Answer

Sound needs a medium for its propagation. It cannot travel in vacuum. The moon has no atmosphere, so sound cannot travel there.

Card 4Speed of sound

Which travels faster: sound in iron, water, or air?

Answer

Sound travels fastest in iron, then in water, and slowest in air. Speed of sound: - Iron = nearly 5000 m/s - Water = nearly 1500 m/s - Air = nearly 330 m/s…

Card 5Type of wave

What is a longitudinal wave in sound?

Answer

"This wave in which the particles of the medium vibrate about their mean positions, in the direction of propagation of sound, is called longitudinal wave." Sound in air travels as a longitudinal wave.

Card 6Compression and rarefaction

What forms one complete wave in sound propagation?

Answer

One complete to and fro motion of the strip forms one compression and one rarefaction. Together, they constitute one wave.

Card 7Frequency and time period

State the relation between frequency and time period.

Answer

Formula: f = 1/T Meaning: - f = frequency - T = time period Units: - f in hertz or s^-1 - T in second Quick example: If T = 2 s, then f = 1/2 = 0.5 Hz.

Card 8Numerical on frequency

A wave has time period 4 s. Find its frequency.

Answer

Given: - Time period, T = 4 s Formula: - f = 1/T Solution: - f = 1/4 s - f = 0.25 s^-1 - f = 0.25 Hz Answer: 0.25 Hz…

+26 more flashcards available

Practice All

Frequently Asked Questions

What are the important topics in Sound for ICSE Class 8 Physics?
Sound covers several key topics that are frequently asked in ICSE Class 8 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.
How to score full marks in Sound — ICSE Class 8 Physics?
Understand the core concepts first, then work through the 166 practice questions available for this chapter. Revise formulas and definitions regularly, and use flashcards for quick recall before the exam.
How many flashcards are available for Sound?
There are 34 flashcards for Sound covering key definitions, formulas, and concepts. Use them daily for 10–15 minutes for best results.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

More resources for Sound

All 8 chapters — ICSE Class 8 Physics Flashcards

For serious students

Get the full Sound chapter — for free.

Quizzes, flashcards, AI doubt-solver and a step-by-step study plan for ICSE Class 8 Physics.

Try Super Tutor Free
Try the full chapter — Free