EVERYDAY SCIENCE

Detailed explanation-1: -Since Earth is surrounded by the vacuum of outer space, it cannot lose energy through conduction or convection. Instead, the only way the Earth loses energy to space is by electromagnetic radiation.

Detailed explanation-2: -Because Earth is much cooler than the Sun, it re-radiates energy as longwave, lower-energy wavelengths than it absorbs. This absorbed energy is re-radiated as infrared radiation, which we feel as heat.

Detailed explanation-3: -Radiation is the transfer of heat by electromagnetic waves. Note that, unlike conduction or convection, heat transfer by radiation does not need any matter to help with the transfer.

Detailed explanation-4: -The main heat-transfer mechanism that takes internal energy from deep in the Earth’s mantle to the near-surface region is convection.