Created from Youtube video: https://www.youtube.com/watch?v=UpXKKEbCByAvideoConcepts covered:sound energy, wave propagation, frequency, amplitude, NCERT syllabus
The video by Prashant Kirad covers the complete chapter on sound for Class 9th Science, focusing on NCERT syllabus. It explains key concepts such as sound as a form of energy, the law of conservation of energy, sound propagation, types of waves, and characteristics like frequency, amplitude, and pitch, using practical examples and demonstrations.
Sound Complete Chapterš„| CLASS 9th Science | NCERT covered | Prashant Kirad
Concepts covered:sound energy, wave propagation, frequency, amplitude, NCERT syllabus
The video by Prashant Kirad covers the complete chapter on sound for Class 9th Science, focusing on NCERT syllabus. It explains key concepts such as sound as a form of energy, the law of conservation of energy, sound propagation, types of waves, and characteristics like frequency, amplitude, and pitch, using practical examples and demonstrations.
Question 1
Sound is a form of energy.
Question 2
What is a characteristic of transverse waves?
Question 3
The law of conservation of energy states that energy can neither be _____ nor destroyed.
Question 4
CASE STUDY: A teacher is explaining sound propagation using a pendulum.
Identify the incorrect statement about sound propagation.
Question 5
CASE STUDY: Students are conducting an experiment with a vacuum jar and a bell.
Select three correct observations about sound in a vacuum.
Question 6
Sound waves are longitudinal waves.
Question 7
How does sound propagate through air?
Question 8
Longitudinal waves have areas of high pressure called _____.
Question 9
CASE STUDY: A teacher uses a tuning fork to demonstrate sound production.
Identify the incorrect statement about sound production.
Question 10
CASE STUDY: A group of students is discussing mechanical and electromagnetic waves.
Select three correct differences between mechanical and electromagnetic waves.
Question 11
Sound can travel in a vacuum.
Question 12
What is the relationship between frequency and pitch?
Question 13
Mechanical waves require a _____ to transfer energy.
Question 14
CASE STUDY: A science class is learning about wave types using a slinky.
Identify the incorrect statement about wave types.
Question 15
Frequency is the number of oscillations per second.
Question 16
What is the role of vibrations in sound?
Question 17
The unit of frequency is _____.
Question 18
CASE STUDY: A class is discussing the law of conservation of energy in sound.
Identify the incorrect statement about energy conservation in sound.
Question 19
Sound travels through a medium as waves.
Question 20
What is the unit of frequency?
Question 21
Sound is produced by _____, which is a rapid back and forth movement.
Question 22
Higher frequency means higher pitch in sound.
Question 23
What is required for mechanical waves to travel?
Question 24
Sound is a form of _____ that creates a sensation of hearing.
Question 25
Vibrations are rapid back and forth movements.
Question 26
What is sound in terms of energy?
Question 27
Transverse waves have particles moving _____ to the direction of wave propagation.
Question 28
Sound follows the law of conservation of energy.
Question 29
What is the time period of a wave?
Question 30
Sound travels through a medium by _____ of particles.
Question 31
Mechanical waves require a medium to travel.
Question 32
What is an example of a longitudinal wave?
Question 33
Frequency is the number of _____ that pass a point in one second.
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