Question

the earth receives heat from the sun by radiation true or false​

Answer 1

The given statement is true - The earth receives heat from the sun by radiation

Explanation:

• Solar radiation is created by nuclear fusion reactions in the core of the sun, thereby emitting a large amount of electromagnetic radiation, mostly in the form of visible light.
• This is the radiation that heats the Earth.
• The sun's surface emits about $63$ million watts of energy per square meter.
• Since the earth being located at a farthest distance of around $150$ million kilometers from the sun, it receives only a small part of heat radiation from the sun.
• By the time the heat energy reaches the Earth, it will be reduced to $1,370$ watts per square meter at the top of the atmosphere which is facing the sun directly.
• The Earth also radiates heat back into space, just to prevent the planet from overheating.