When you are on platform you can see train but Cannot hear the sound of train Why?

Sound propagating in the air is traveling in all directions from the source, and thus the energy dissipates rapidly. Originally Answered: One can hear the sound of a far approaching train by putting his ears on the rails. But he cannot hear the sound in air unless the train reached close to him.

When we put our ear to a railway line we can hear the sound of an approaching train even when the train is far off but its sound Cannot be heard through the air Why?

When we put our e Answer : Because the track is made of metals and sounds travel faster in solids than air. Thus, we can hear the sound of an approaching train even when the train is far off but its sound cannot be heard through the air.

What do you call the sound of a train?

Choo, chug and chuff are onomatopoeic words for the sound a steam train makes. In BE, choo-choo and (less commonly) chuff-chuff are onomatopoeic words for “train” (or more specifically, the engine) – they are used when speaking to very young children and thus, by very young children.

Why are two sounds heard on placing one’s ear close to a railway track when a train is approaching from a distance?

So, if we put our ears on a railway track where a train is approaching from a far distance, we hear two sounds – first one is transmitted in the tracks (solid medium) and the other is transmitted through the air (gaseous medium) which is the second sound.

Why is it possible to detect the approaching of a distant train by placing the year very close to the railway line?

We can detect a train approaching by placing the ear very close to the railway line because sound travels sixteen times faster in iron than in air. Sound is a mechanical wave which needs a material medium to travel.

Does a train rumble?

If you have ever been in a building in a city with an underground subway like Boston or New York, you have probably heard a low-frequency rumble noise when a train passes by. The contact forces at the wheel/rail interface induce vibrations in the track which then travel through the ground to nearby buildings.

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.

What does it mean when you hear a train in the air?

To hear a train in the air, you’re looking at a LOT of vibrating air – potentially miles of it, if the train is really far away. The train is vibrating more then just the air – the train itself is vibrating from the engine, rocking back and fort, etc. These vibrations also carry t “Sound” as we know it is vibrations that travel through the air.

Why do trains squeak when you put your ear on the rail?

If you put your ear on the rail, you are hearing a vibration made by the train moving along the rails. The vibration from the rail moves the air molecules around it. Those molecules hit other air molecules until they hit your ear drums. Its like a chain reaction of sound waves.

How far away is it possible to detect a train?

While it is extremely dangerous to put your head on a railroad track (since you don’t know how far away a train might be, or what direction it’s going), I’ve heard of some informal tests where you could detect a train up to 6 miles away.