2007-08-12 20:49:44 · 15 answers · asked by nagar n 1 in Science & Mathematics ➔ Physics
The Sun is the star at the center of the Solar System. By itself accounts for about 99.8% of the solar system's mass.
Energy from the Sun—in the form of sunlight—supports almost all life on Earth via photosynthesis, and drives the Earth's climate and weather.
2007-08-12 20:52:51 · answer #1 · answered by Damian S 3 · 2⤊ 0⤋
I really hope this is a serious question....
The sun is a star, a ball of plasma; that is gas that has been superheated and is reacting violently with itself. The sun is made out of mostly hydrogen and some helium. Energy comes from the sun by nuclear fusion. That is, the sun is so hot and pressurized, that hydrogen atoms are fused together to make helium atoms, and this causes the release of a huge amount of heat and light.
2007-08-13 03:54:28 · answer #2 · answered by TheHonorableReese 6 · 0⤊ 0⤋
The sun is an ordinary star, it supply Earth with all the light and hear needed for life to exist on this planet. It gets its energy from the fusion of hydrogen into helium, it has been doing this for five billion years and it will do it for at least a few billion more years.
2007-08-16 21:33:59 · answer #3 · answered by johnandeileen2000 7 · 0⤊ 0⤋
sun?The Sun is by far the largest object in the solar system. It contains more than 99.8% of the total mass of the Solar System
It is often said that the Sun is an "ordinary" star. That's true in the sense that there are many others similar to it. But there are many more smaller stars than larger ones.
2007-08-13 03:54:49 · answer #4 · answered by hikari takishima 1 · 0⤊ 0⤋
Sun is a big star present in the solar system closest to the earth
which is the only source of heat and energy to us.
2007-08-13 05:24:16 · answer #5 · answered by Anonymous · 0⤊ 0⤋
The Sun is composed of hydrogen (about 74% of its mass, or 92% of its volume), helium (about 25% of mass, 7% of volume), and trace quantities of other elements. The Sun has a spectral class of G2V. G2 implies that it has a surface temperature of approximately 5,500 K (or approximately 5,315 degrees Celsius / 9,600 Fahrenheit), giving it a white color which, because of atmospheric scattering, appears yellow as seen from the surface of the Earth. This is a subtractive effect, as the preferential scattering of blue photons (causing the sky color) removes enough blue light to leave a residual reddishness that is perceived as yellow. (When low enough in the sky, the Sun appears orange or red, due to this scattering.)
2007-08-13 18:10:19 · answer #6 · answered by Anonymous · 0⤊ 0⤋
Sun is a star, containing hydrogen, helium and other elements but mostly it is the hydrogen - helium fusion reaction which provides the energy to the Sun.
2007-08-13 04:22:13 · answer #7 · answered by Swamy 7 · 0⤊ 0⤋
Sun is belong to star category. it has helium ,hydrogen and other gases . The temperature vary from centre to outer 8000 K to 2000 K . It has many black spot inside varying depent upon time. The black spots are low in temparture compared to its outside bright area.
wide range of radiation is from sun X-ray, radio freq, visible , Ir all... etc.,
The sun is Plasma in state.
2007-08-13 06:22:04 · answer #8 · answered by dhananjeyan m 1 · 0⤊ 0⤋
Sun is a normal main - sequence star. Its spectral type is G2.
It is half way in its lifetime. It is in center of our solar system.
For images & videos about sun :
Visit www.spacetelescope.org
2007-08-14 01:33:05 · answer #9 · answered by Anonymous · 0⤊ 0⤋
Sun is a star and is not different than the other stars.
only it appaers so big and so bright because it is very near to our earth.
2007-08-13 06:01:15 · answer #10 · answered by devanshu 1 · 0⤊ 0⤋