The sun produces heat derived from energy through a variety of means, such as fusion, radiation and convection. Heat is the transfer of energy from one body to another, so the heat from the sun is the result of the energy produced in its core being transferred outward into space.Continue Reading
The sun produces a massive amount of energy due to the nuclear fusion reaction in its core, in which the element hydrogen is converted into helium. The temperature in the core is about 13,600,000 degrees Kelvin, and this heat is transferred into the next layer through thermal radiation. After that, the heat is carried to the surface of the sun through convection. From the surface, where the temperature is around 5,700 K, the energy from the sun travels throughout space in the form of light radiation. A portion of this light reaches Earth, and some of the energy is trapped by the atmosphere, heating Earth.
Substances on Earth are heated at the molecular level, as the light from the sun excites the atoms that make up the substance. The infrared portion of the sun's light resonates with some of the atoms in the substance, and these vibrating atoms collide with other atoms in the substance, dispersing the energy and producing heat.Learn more about Our Sun
Nuclear fusion plays a vital role in the continuance of life on Earth because it is the means of energy production employed the sun. If the sun was unable to fuse lighter elements into heavier elements through the thermonuclear fusion occurring within its core, there would be no light and heat traveling across space to Earth. The nuclear fusion taking place in the sun's core results in a core temperature of about 27 million degrees Fahrenheit.Full Answer >
Sunlight is the result of electromagnetic radiation being emitted from the sun. Ultraviolet, visible and infrared light are the result of this radiation, and they have a profound effect on the Earth.Full Answer >
Ultraviolet radiation from the sun is the primary cause of skin cancer, according to WebMD. Sun exposure also accelerates the age of the skin. Dr. Troy L. Bedinghaus notes that sun exposure may result in damage to the eyes.Full Answer >
The sun burns due to a nuclear fusion reaction that leads to the release of heat and light energy. It may seem paradoxical to some students that the sun can burn in space, an environment without oxygen, but it is burning thanks to a fusion reaction rather than combustion, so oxygen is not required for the sun to produce heat and light as if it were fire. Technically, the sun is not on fire as such but is a burning ball of nuclear fusion reactions.Full Answer >