Does the sun have a surface?

Question

You learn in school that the sun is a ball of gas or a continuous nuclear furnace, yet many references speak of a "surface" ie. the temp on the surface of the sun...etc. Now recent images of the sun reveal volcanic activity? What gives?

Answer 1

Yes. The sun's surface is the upper limit of where the gases are still dense, before they leave the sun's surface and form the sun's corona, an envelope of superheated gases millions of degrees hot. It is convenient to refer to the sun's "surface" because there is a temperature associated with it. Our sun's surface temperature is about 5,500 degrees. The sun's center (core), however, is millions of degrees, so when you speak of the sun's temperature, it is convenient to indicate whether you talking about the "surface" or the core. The core is denser than any rock found on earth, but it is still considered "liquid" because the extreme heat keeps anything from solidifying. In this small sense, there is nothing "solid" about the sun.

As far as "volcanic" activity goes, that process is known as convection, where hot materials from the core rise up to the surface, cool, and flow back down towards the core. I guess you could consider that volcanic, since some of these rising gases certainly "erupt" from the sun's surface, causing large solar flares and prominences.

Answer 2

Yes Sun is a hot gas ball. Surface temp of Sun is around 6000DegC. As we move inwards the temperature starts increasing reaching to millions/billions of degreesC aat the centre where fusion reactiond take place converting Hydrogen to Helium and releasing energy.
The 'surface" phenomenon comes about because of special property of gases which at very high temperatures behave like Liquids called "plazma" and hence have a surace.

Answer 3

The sun being a ball of gas has a surface like a ball has . it is burning on all sides and we receive the heat from the side that is visible to us or exposed to us.Thre are no volcanoes thre on the sun and but when the burning causes some eruptions at specific spots the flames ar shot out from the surface to thousands of miles and this looks like the flames sent out by vocanoes .

Answer 4

The sun has a variety of densities, so it's a matter of subjectivity that decides what the "surface" is. There are also heavier elements like iron in the sun. There is no volcanic activity. What is seen are solar flares.

Answer 5

The "floor" of the solar is the position the position the gases develop into opaque (no longer clear) at the same time as considered from the exterior. it truly is because hydrogen, at temperature larger than (about) 6000 ok is ionized -- it can't proceed to be impartial (the electron can't proceed to be around the proton at that temperature). Ionized hydrogen isn't clear. this signifies that the potential popping out from the centre can't destroy out freely (it can't destroy out interior the style of sunshine), so as that it can be carried from the centre to the exterior by technique of convection modern (like soup in a pot, merely earlier it begins to boil). The flow of those convection currents is what's called the conveyor-belt bypass. once the potential reaches "the exterior", the potential of the nice and cozy temperature can destroy out as mild (it is what we see: mild it extremely is emitted by technique of a floor heated to easily below 6000 ok (= 10,000 F, type of) the same definition is used for the exterior of Jupiter: that is actual the finished of the atmospheric clouds, the position the ambience stops being clear -- as considered from the exterior. considered from the interior, of direction, we may say that it truly is the position the sky suddenly will develop into clear... because the clouds of Jupiter are made from larger molecules, they're opaque at a lot decrease temperature.

Answer 6

sun is mostly gas as u are rightly taught but their density is really really high

i mean core if i recall was around 150 times denser than water which would be almost solid but in liquid state....

its almost like .... u know Glass the normal house glass windows etc is also very very dense liquid. its not a solid thing.... if you visit and ol ancient house you would find glass at lower end of windows is slightly thick coz with gravity glass has over generations flown down....

same is the case with the gases and liquids that make up sun

when they say surface they mean the outter covering of the sun or the PHOTOSPHERE....

and what u talk about volcanic activty is called as SOLAR FLARES... they are all together different than magma.... for them and rest about sun

i think wikipedia would be good source...
http://en.wikipedia.org/wiki/Sun

Answer 7

The sun's surface is made up of gas molecules excited into the state of plasma.

Answer 8

If by surface, you mean a solid boundary, well it does not.
However, it is layered with plasma which offers a kind of contrast between the sun and the space which surrounds it.

Answer 9

The surface is like exploding plasma and energy, but it contrasts with space.

Answer 10

nope it's energy, sure if you have to get down to it a nuculas, but no physical center. It's energy hot energy.