PlEaSe PlEaSe HeLp TeSt ToMoRrOw On SpAcE?

Question

Here's the question, What causes the hugeunt of heat and light that a sun gives off?

Pleeeeeeeese Help!!!!

It's supposed to be What causes the huge amount of heat and light that a sun gives off.

Thanks so much!!!

Answer 1

Nuclear fusion.

Now go study some more as that was an easy one.

Answer 2

For your test tomorrow...

The sun is a huge, huge ball of gases. It has a diameter of 864,900 Miles (Almost a Million Miles wide; the Earth's diameter is 7,926 Miles). The gases are mostly hydrogen, helium, and some other trace gases. The ball of gas is so huge that the central core has immense pressure pushing down on it from all sides. This pressure causes utterly fantastic levels of heat. And extreme heat combined with extreme pressure in the right amounts start up nuclear fusion where Hydrogen is heated and swuashed so drasticly that it becomes helium (see atomic charts). This fusion of Hydrogen atoms into helium gives off huge amounts of radiation from heat through the light spectrum and on up into X Rays and Gamma Rays. The radiant light and heat are what most people see and understand about the Sun. What they don't know, normally, is that the Sun also gives of dangerous radiation in the X Ray spectrum and Gamma Rays similar to those within a nuclear power plant. Our atmosphere shields us from most of the effects of that radiation.

The surface tempersture of the Sun is 9,930 Degrees F. The core of the Sun where niuclear fusion is taking place is on the order of 127 Million Degrees F. That is hotter than anything known on Earth. At those temperatures, most of the gases on the Sun are molten liquids and may even be so dense that they are almost metallic down in the core.

Reference: ASTRONOMY, Ian Ridpath, DK Publishing, NY NY.

Answer 3

...its the nuclear fusion in the sun!!!...

...now, look...the Sun is made of atoms too..mostly they are ionized, so we should think of the Sun as being made of nuclei and electrons..but what kind of nuclei?..we can find out by analyzing sunlight, as we will see shortly..

The result

About 75% (by mass) H...
About 25% (by mass) He...
A small amount of heavier elements. ..

..the middle of the Sun is a very hot gas.it is ionized: all of the electrons have been ripped away from the nuclei because it is so hot..the nuclei available are mostly 1H, quite a lot of 4He, and a few 2H and 3He. (There are a few other types, but they are not so important for us.)..what is happening in the middle of the Sun is analogous to burning methane:

C H4 + 2 O2 --> C O2 + 2 H2 O

..in this reaction, the final molecules have less internal energy than the starting molecules..since energy is conserved, the extra energy is released as energy of motion of the molecules..that is the gas gets hotter..the amount of energy involved is 5.5 eV each time the reaction above happens..as we have seen, much more energy than that must be involved in the reactions inside the Sun and other stars..the evidence is strong that the overall reaction is "burning" hydrogen to make helium:

4 1H + 2 e --> 4He + 2 neutrinos + 6 photons

..the high energy photons produced by the nuclear process don't get far..they are absorbed and heat the gas..the helium remains in the middle of the Sun..the neutrinos easily zip out of the Sun.. (Neutrinos easily zip through most anything, reacting with matter only rarely.)..... ' ',)

Answer 4

Nuclear Fuision. Not to be confused with Fission.

Fuision is two or more atoms being forced together

Fission is two or more atoms being created from the particles of an original atom.

Both nuclear reactions produce huge amounts of light and heat, but the sun uses fuision.

Most of the more complex elements in the universe were created in the cores stars going from hydrogen all the way to iron.

Answer 5

Inside the sun, hydrogen gas is constantly being turned into helium gas. This happens by a process called fusion. Anyway, when the hydrogen converts to helium, a beta particle is absorbed to add the extra electron and convert the neutron into a proton, which makes it helium. This process is what releases the light and heat.

Answer 6

As the atoms in the sun get fused, they give off energy, and this energy travels all the way to the earth as electromagnetic waves. Just as atoms are different because they have different numbers of protons and electrons, waves are different because they are longer or shorter. The longest waves are radio waves, then microwaves, infra-red, then visible light, ultraviolet light, x-rays and the shortest waves of all, gamma rays. Light is just the tiny part of the spectrum we can see. All waves shorter than infra-red are strong enough to knock electrons right out of their valences.

Answer 7

Fire. Fire burns hot and gives off light. Unless it's night time, then the sun goes down and it's not hot or light anymore.

Answer 8

It is the fusion that is occurring as the Hydrogen gas is being converted to Helium.

Answer 9

Hydrogen fusion

Answer 10

Nuclear reactions produced by hydrogen fuseing to helium.

Answer 11

The neclear fusion of the Hydrogen.