Question

The radiation of heat energy from the Earth's surface is called ___________.​

Answer 1

Answer:

The Earth's surface also emits energy, but because it is much cooler than the Sun, it does so in the infrared part of the spectrum. This is heat energy. Often, the Sun's energy is called short-wave radiation, whilst radiation from the Earth's surface is called long-wave radiation.

Answer 2

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${ \boxed{ \purple{incoming \ solar \ radiation}}}$

The earth's surface receives most of its energy in short wavelengths. The energy received by the earth is known as incoming solar radiation which in short is termed as insolation