How does the sun supply energy to earth?

Answer 1

The earth receives energy from the Sun in the form of radiation. The Earth reflects about 30% of the incoming solar radiation. The remaining 70% is absorbed, warming the land, atmosphere and oceans. For the Earth's temperature to be in steady state so that the Earth does not rapidly heat or cool, this absorbed solar radiation must be very nearly balanced by energy radiated back to space in the infrared wavelengths. Since the intensity of infrared radiation increases with increasing temperature, one can think of the Earth's temperature as being determined by the infrared flux needed to balance the absorbed solar flux.

The visible solar radiation mostly heats the surface, not the atmosphere, whereas most of the infrared radiation escaping to space is emitted from the upper atmosphere, not the surface. The infrared photons emitted by the surface are mostly absorbed in the atmosphere by greenhouse gases and clouds and do not escape directly to space.

Thus Solar radiation heat the earth

Answer 2

Sunlight, as with all light, exhibits properties of a particle as well as a wave. Sunlight energy originates as fusion energy in the sun's core and is transmitted to the earth as a wave/photon.

The heat is absorbed by the Earth in two ways:

• Short-wave visible light energy brings heat to the surface. The surface then radiates long-wave infrared energy. More energy is absorbed by darker surfaces. Light or reflective surfaces like ice and snow reflect the light energy back into space.
• Some of the energy is absorbed by the "greenhouse gases" because their bond sizes can absorb the energy. This absorbed energy is eventually shared with the rest of the atmospheric gases warming them up.

The energy from the sun is essentially constant. However the heat absorbing and releasing capacity of the Earth changes with its "shininess" (albedo) due to ice cover, soot deposition, cloud cover and particulate in the air, the amount of open water, and the amount of heat absorbing gases in the atmosphere. Eventually the heating effect of the sun is balanced by the cooling effect of radiating heat back into space. When any of the controlling parameters changes the temperature of the Earth changes.

Answer 3

• Earth contains envelop of air .

• Air contains many gases .

• Some of this gases like CO2 have tendency to absorb heat so they heat atmosphere which in turns heat earth .

Answer 4

The sun's ultraviolet rays directly strike the surface of the oceans and the earth, making them warmer. Heat also rises from the earth and oceans in the form of infra-red waves, which are captured by greenhouse gases in the atmosphere. This warms the atmosphere, which then warms the earth and oceans even further.

Answer 5

The sun supplies energy to Earth through a process called nuclear fusion. In the sun's core, hydrogen atoms combine to form helium, releasing a tremendous amount of energy in the form of heat and light. This energy travels through space as sunlight and warms the Earth's surface.

Answer 6

The sun heats the Earth using radiation. The Sun emits heat throughout our solar system. The closer you get to the Sun the hotter it is.

Answer 7

when sun rays touch a solid it becomes heat......

Answer 8

Without the sun there would not be any enery to help plants grow. The sun provides the food living things need to have in order to stay alive.