Answer the following questions : (a) Optical and radio telescopes ar

1.	Answer the following questions : (a) Optical and radio telescopes are built on the ground while X-ray astronomy is possible only from satellites orbiting the Earth. Why? (b) The small ozone layer on top of the stratosphere is crucial for human survival. Why?
Answer» (a) The visible radiations and radiowaves can penetrate the earth's atmosphere but X-rays are absorbed by the atmosphere. (b) The ozone layer absorbs ultraviolet and other low wavelength radiations which are harmful to living cells of human bodies and plants; hence ozone layer is crucial for human survival.

Answer the following questions : (a) Optical and radio telescopes are built on the ground while X-ray astronomy is possible only from satellites orbiting the Earth. Why? (b) The small ozone layer on top of the stratosphere is crucial for human survival. Why?

Answer»

(a) The visible radiations and radiowaves can penetrate the earth's atmosphere but X-rays are absorbed by the atmosphere.

(b) The ozone layer absorbs ultraviolet and other low wavelength radiations which are harmful to living cells of human bodies and plants; hence ozone layer is crucial for human survival.

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Answer the following questions : (a) Optical and radio telescopes are built on the ground while X-ray astronomy is possible only from satellites orbiting the Earth. Why? (b) The small ozone layer on top of the stratosphere is crucial for human survival. Why?

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