Question

1. If you want to hear a train approaching from far away why is it more convenient to put the ear to the track?
2. Why a sound cannot be heard on the moon?
3. explain why the flash of lightning is seen first but the sound of thunder is heard a little later (though lighting and thunder takes place in the sky at the same time and same distance from us)?
4. Draw a neat and labelled diagram of the human ear.
5. Sound cannot travel in________.
6. A set of three tiny________in the middle part of ear passes on sound vibrations from the eardrum to the liquid in the cochlea.

please tell the answers...... ​

Answer 1

Answer:

don't know srrrrrrrrrryyyyyyyyy

Answer 2

Answer:

1).because iron is having more tendency to pass the sound

2).becauseoon doesnt have gravitional force