Table of Contents
- 1 When Varun put his ear on the railway track he could hear the approaching train due to?
- 2 Why is the sound of a train approaching from far away clearly audible by putting the ear very close to the track?
- 3 Why did people put their ears on railway track to know about approaching train?
- 4 What changes occur in the speed of sound when it travels from iron to air?
- 5 How can a person can hear an approaching train?
- 6 What sound do you hear when a train passes by?
When Varun put his ear on the railway track he could hear the approaching train due to?
Metals are composed of highly dense packed particles, so sound can travel faster through metal than through air. This is the reason, we can hear train sound from far by keeping our ear on the rail track and not by air.
Why is the sound of a train approaching from far away clearly audible by putting the ear very close to the track?
It is more convenient to put the ear to the track to hear a train approaching from far away because sound travels faster in solids than in air because the speed of sound is directly proportional to the density of the material medium. In this case, the density of railway track is higher than air.
What difference will you hear in a sound if there is an increase in amplitude and frequency?
a) if there is an increase in the amplitude of vibration then the sound produced becomes louder. in the same way if the frequency is increased then the sound is high pitched and if the frequency decreases the sound is low pitched. Hope it helped.
What differences will you hear in a sound if there is an increase in amplitude?
The sound is perceived as louder if the amplitude increases, and softer if the amplitude decreases. As the amplitude of the sound wave increases, the intensity of the sound increases. Sounds with higher intensities are perceived to be louder.
Why did people put their ears on railway track to know about approaching train?
The rumbling sound indicates the arrival of train. But by putting our ear to the railway line, we can hear the sound of the coming train even if it is quite far away. This is Because sound waves travel very fast in Solids, Their speed is around 5100m/s , sound travels 15 times faster in steel than in air.
What changes occur in the speed of sound when it travels from iron to air?
Answer: Speed decreases. So when the sound travels from iron(solid) to air(gas), its speed decreases.
Why is it more convenient to put the ear to the track to hear a train approaching from far away Class 8?
Sound travels fastest through solids and slowest through air. So the sound waves sent by the train on the track reaches the human ear faster through the train track than the air. The sound reaches us more slowly through air.
When we put our ear on a railway track we can?
When we put our ear on a railway track, we can hear the sound of an approaching train even when the train is not visible but its sound cannot be heard through air. Why?
How can a person can hear an approaching train?
Related QuestionsMore Answers Below When we put our ear to a railway track, we can hear the sound of an approaching train, but it’s sound cannot be heard through air. A person can hear an approaching train when we press his ear to the railway tracks.
What sound do you hear when a train passes by?
You can hear the sound of the train coming at a distance. Since sound travels faster in solids (here track) than air, even before the train comes before you , you can hear the sound of the wheels moving on the track.. a hissing sound.
Can we hear a train rumbling on the track through air?
A train rumbling on the track produces a lot of vibration which makes us sense the arrival of the train easily.But these vibrations cannot be felt through air.. Originally Answered: One can hear the sound of a far approaching train by putting his ears on the rails.