Question

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Answer 1

Answer:

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Answer 2

Explanation:

Q3

We cannot talk in space because sound travels only in medium and space does not have medium.

Q5

Music is a sound that produces a pleasing sensation. It is produced by nature, musical instruments, human voice, etc. Noise is an unwanted and unpleasant sound produced by horns of vehicles, by machines, etc. If a musical sound is made too loud, it becomes a noise.

Q6 1 The shape of the outer part of the ear is like a funnel. The other part of the ear is called Pinna and is attached to about 2 to 3 centimetre long passage called ear Canal. 2)At the end of ear canal a thin, elastic and circular membrane called a eardrum is stretched tightly.

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