where does the haet from the sun come from ?

Answer 1

We know that the sun is a sphere of diameter 1,400,000 km, that its outer regions are hot gases, mostly hydrogen and helium, and that its surface temperature is about 6,000 degrees Celsius (about 11,000 degrees Fahrenheit). Any surface at that temperature will generate heat and light. The burners of an electric stove or a toaster oven, for example, are not at 6,000 C., but when they're turned on they are "red hot"; they emit heat and light and the light is red. If we could raise the temperature to 6,000 C. they would become "white hot", and emit light very much like the sun's. Similarly, a fire is a region of gases at a temperature high enough to generate heat and light.
So the question becomes not so much why is there heat and light, but where does the energy come from to keep the surface temperature of the sun at 6,000 degrees?

Answer 2

From the core of the sun. It's a 250,000 mile diameters hydrogen bomb that's been continuously "exploding" for the last 4.5-billion years. In the core, 600-million metric tons of hydrogen are changed into helium every SECOND! This nuclear fusion process releases great amounts of energy. The central temperature of the sun is at least 27-million degrees Fahrenheit.

Answer 3

The heat of the sun comes from gravitational collapse.

All stars collapse and heat up, other things being equal.

However, when the core of a start becomes hot enough nuclear reactions begin (initially fusion of hydrogen to helium). This creates energy that temporarily halts the gravitational collapse.

Our sun is currently in such a stage.

Answer 4

Wow the guy who first answered your answer is crazy about science. He's answered nearly every science question. Weird but brilliant! The answer to your question is indeed from Nucleur Fusion but if you want to be more 'scientific' here's the real story:

The sun has produced energy for billions of years. Solar energy is the solar radiation that reaches the earth.

Solar energy can be converted directly or indirectly into other forms of energy, such as heat and electricity. The major drawbacks (problems, or issues to overcome) of solar energy are: (1) the intermittent and variable manner in which it arrives at the earth's surface and, (2) the large area required to collect it at a useful rate.

Solar energy is used for heating water for domestic use, space heating of buildings, drying agricultural products, and generating electrical energy.

In the 1830s, the British astronomer John Herschel used a solar collector box to cook food during an expedition to Africa. Now, people are trying to use the sun's energy for lots of things.

Electric utilities are trying photovoltaics, a process by which solar energy is converted directly to electricity. Electricity can be produced directly from solar energy using photovoltaic devices or indirectly from steam generators using solar thermal collectors to heat a working fluid.

Out of the 14 known solar electric generating units operating in the US at the end of 2004, 10 of these are in California, and 4 in Arizona. No statistics are being collected on solar plants that produce less than 1 megawatt of electricity, so there may be smaller solar plants in a number of other states.

Answer 5

Nuclear fusion of Hydrogen into Helium.

Answer 6

The sun is a star and all stars are made of fire. The fire creates UV rays that burn the skin. This is where the heat comes from

Answer 7

due to nuclear fusion ...four hydrogen atoms combine to form a helium.......this takes place at high temperatures and pressure...thus not possible on the earth(at least not yet..........)

Answer 8

did you mean heat if so i think it comes from the sun

Answer 9

Your answer= words #5to 8 of your question itself. OK ?