The Sun

The most important star in the milky way

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The sun and it's layers

This presentation is going to tell you about he sun and its layers
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The sun has layers, just like earth

The layers of the sun from the outer most layer to the inner most layer is...

  • corona
  • chromosphere
  • photosphere
  • convection zone
  • radiation zone
  • core


There are other things that happen/are on the sun like...


  • sunspots
  • prominence
  • flares
  • it's aurora
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The corona

The corona is the aura of plasma that surrounds the the sun and other celestial bodies.

The sun's corona extends millions of kilometers into space and is most easily seen during a total solar eclipse, but it is also observable with a coronagraph.

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The chromospere

The chromosphere is an irregular layer above the photospere.

At the higher temperatures of this layer, hydrogen emits light that gives off a reddish color.

This colorful emission can be seen in prominences that project above the limb of the sun during total solar eclipses.

This is what gives the chromosphere its name (color-sphere).

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The photosphere

The photosphere is the visible surface of the Sun that we are most familiar with. Since the Sun is a ball of gas, this is not a solid surface but is actually a layer about 100 km thick very, very, thin compared to the 700,000 km radius of the Sun.
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The convection zone

A region of turbulent plasma between a star's core and its visible photosphere at the surface, through which energy is transferred by convection.

In the convection zone, hot plasma rises, cools as it nears the surface, and falls to be heated and rise again.

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The radiation zone

A radiation zone, radiative zone or radiative region is a layer of a star's interior where energy is primarily transported toward the exterior by means of radiative diffusion and thermal conduction, rather than by convection.

Energy travels through the radiation zone in the form of electromagnetic radiation as photons.

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The core

The Sun's core is the central region where nuclear reactions consume hydrogen to form helium.

These reactions release the energy that ultimately leaves the surface as visible light.

These reactions are highly sensitive to temperature and density

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Sunspots

Sunspots are temporary phenomena on the photosphere of the Sun that appear visibly as dark spots compared to surrounding regions.

They correspond to concentrations of magnetic field flux that inhibit convection and result in reduced surface temperature compared to the surrounding photosphere.

(the dark spots on the sun)

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Prominence

A prominence is a large, bright, gaseous feature extending outward from the Sun's surface, often in a loop shape.

Prominences are anchored to the Sun's surface in the photosphere, and extend outwards into the Sun's corona.

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Flares

A brief eruption of intense high-energy radiation from the sun's surface, associated with sunspots and causing electromagnetic disturbances on the earth, as with radio frequency communications and power line transmissions

(the bright lights)

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Aurora

An atmospheric phenomenon consisting of bands, curtains, or streamers of light, usually green, red, or yellow, that move across the sky in polar regions.

It is caused by collisions between air molecules and charged particles from the sun that are trapped in the earth's magnetic field.