EVERYDAY SCIENCE

Detailed explanation-1: -Radiation is the transfer of heat energy through space by electromagnetic radiation. Most of the electromagnetic radiation that comes to the earth from the sun is invisible. Only a small portion comes as visible light. Light is made of waves of different frequencies.

Detailed explanation-2: -All of the energy from the Sun that reaches the Earth arrives as solar radiation, part of a large collection of energy called the electromagnetic radiation spectrum. Solar radiation includes visible light, ultraviolet light, infrared, radio waves, X-rays, and gamma rays. Radiation is one way to transfer heat.

Detailed explanation-3: -Energy is transferred from the sun to Earth via electromagnetic waves, or radiation. Most of the energy that passes through the upper atmosphere and reaches Earth’s surface is in two forms, visible and infrared light. The majority of this light is in the visible spectrum.

Detailed explanation-4: -So, it is clear that the heat from the Sun can’t be transferred to the earth by the process of conduction and convection. But, radiation doesn’t require a medium to transfer energy. So, the heat of the Sun is transferred to the Earth without any material medium, by radiation.