need it soon
2007-09-28 04:27:29 · 8 answers · asked by Tommy V 1 in Science & Mathematics ➔ Astronomy & Space
True.
2007-09-28 04:30:34 · answer #1 · answered by campbelp2002 7 · 0⤊ 0⤋
True and false. It depends how you read the question.
The "glow" of the Sun is caused by the fact that the Sun's surface has a temperature of 5780 K (= 6050 C = 10,900 F).
Any object heated to that temperature would emit the same kind of light (the "glow") as the surface of the Sun does. Same flux (Watts per square metres), same color distribution (spectrum).
The heat needed to keep the Sun's surface at that temperature comes from the Sun's lower layers in the form of convection currents (hot gas move up, dumps its excess heat onto the surface; cooled gas moves back down to take the place of the ascending hot gas).
At some layer, deep into the Sun's interior, the cool gas is heated by absorbing photons that are emitted by extremely hot atoms and particles.
They are being kept that hot by gamma rays emitted by the nuclear fusion going on at the centre of the sun (hydrogen atoms being fused into helium atoms).
So, the glow is caused by the temperature, the temperature is caused by the central heat. The heat is caused by the nuclear reaction.
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It is like asking: is the glow of streetlights caused by the city's coal-fired electrical plant?
Coal fire causes heat, heat boils water into steam, steam drives turbine, turbine turns generator, generator generates electricity, electricity causes the light to glow.
2007-09-28 06:02:58 · answer #2 · answered by Raymond 7 · 1⤊ 0⤋
yes it is true that glow of the sun is caused by a nuclear reaction.fusion reaction occurs on the sun between the helium atom,neutrino,positron,deutron,etc which give rise in temp. upto 10000000000K and sun glows.
2007-09-28 04:41:16 · answer #3 · answered by dabu 1 · 0⤊ 0⤋
True. The Sun's energy comes from fusing hydrogen in to helium. It is, in effect, a natural hydrogen bomb.
2007-09-28 04:30:58 · answer #4 · answered by laurahal42 6 · 0⤊ 0⤋
True.
The radiates both heat and light by nuclear fusion, converting hydrgen into helium by nuclear reaction.
2007-09-28 04:45:57 · answer #5 · answered by Bobby 6 · 0⤊ 0⤋
True. (I wouldn't call it glow though) Hidrogen atoms fuse together and in the process release photons... and other stuff, but the "glow" is photons ^_^
2007-09-28 04:32:29 · answer #6 · answered by lachlaan2004 3 · 0⤊ 0⤋
TruE
2007-09-28 04:38:59 · answer #7 · answered by Anonymous · 0⤊ 0⤋
yeah like a bomb
2007-09-28 04:39:40 · answer #8 · answered by dora-san 2 · 0⤊ 0⤋