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प्रश्न
Fill in the blank and explain.
Sound does not travel through ______.
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उत्तर
Sound does not travel through vacuum.
Explanation:
- Sound waves need to travel through a medium such as a solid, liquid, or gas.
- The sound waves move through each of these mediums by vibrating the molecules in the matter.
- Sound cannot travel through a vacuum.
- A vacuum is an area without any air, like space. So sound cannot travel through space because there is no matter for the vibrations to work in.
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संबंधित प्रश्न
Cite an experiment to show that sound needs a material medium for its propagation.
Fill in the blank.
Sound can travel in a ______
Fill in the blank.
Sound requires a ________ for propagation.
Can two person hear each other on moon’s surface ? Give reason to support your answer.
Name one solid, on liquid and one gas through which sound can travel.
In which medium sound travels fastest : air, water or steel?
Explain why, a ringing bell suspended in a vacuum chamber cannot be heard outside.
A body vibrating with a time-period of `1/256` s produces a sound wave which travels in air with a velocity of 350 m/s. Calculate the wavelength.
The sound waves travel fastest :
Give scientific reasons:
As the sound wave propagates from one place to the other in air, the air itself is not required to move from one place to the other.
Describe in brief, with the aid of a lebelled diagram, an experiment to demonstrate that a material medium is necessary for propagation of sound.
Complete the following sentences :
When sound travels in a medium, the particles of medium ___________ but the disturbance ___________.
The time interval between a lightning flash and the first sound of thunder was found to be 5 s. If the speed of sound in air is 330 m s-1, find the distance of flash from the observer.
A boy fires a gun and another boy at a distance hears the sound of fire 2.5s after seeing the flash. If the speed of sound in air 340 m/s, find distance between the boys.
The propagation of sound does not occur through a ______.
Can we hear sounds of frequencies:
Less than 20 Hz
State three characteristics of the medium required for the propagation of sound.
______ is the distance between two consecutive particles.
______ is the number of vibrations of a particle in the medium, in one second
The small to and fro motion is called vibration.
