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What fraction of this solar energy is intercepted by Earth?
Roughly one billionth of the solar energy emitted by the sun is intercepted by Earth. This small fraction of solar energy is what powers Earth's climate system and sustains life on the planet.
Why does earth only receive a small fraction of the energy given off by the sun?
Most of the sun's energy is emitted as light in various wavelengths. Earth receives only a small fraction of this energy because it's located at a significant distance from the sun. Also, Earth's atmosphere scatters and absorbs some of the incoming solar radiation.
Is half of the suns energy is absorbed by earths surface?
No, not half of the Sun's energy is absorbed by Earth's surface. A small fraction of the Sun's total energy output reaches Earth, with most of it being reflected back into space or absorbed by the atmosphere. The amount that actually reaches and warms the Earth's surface is a relatively small portion of the Sun's total energy output.
What percent of earth water is found in lakes?
Lakes contain about 0.4% of the Earth's water. The majority of Earth's water is found in oceans, with only a small fraction in lakes, rivers, and streams.
Where does most of the earth's heat come from?
Most of Earth's heat comes from the Sun, which radiates energy in the form of sunlight. This energy is absorbed by the Earth's surface, leading to warming of the planet. Additionally, a small portion of the Earth's heat also comes from the radioactive decay of elements in the Earth's core.
