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Nicole Viernes

on 2 March 2015

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Transcript of sun

The Sun is the star at the center of the Solar System. It is by far the most important source of energy for life on Earth. The Sun is a nearly perfect spherical ball of hot plasma, with internal convective motion that generates a magnetic field through a dynamo process. The diameter of the Sun is about 109 times of Earth, and it has a mass about 330,000 times of Earth, accounting for about 99.86% of the total mass of the Solar System. Chemically, about three quarters of the Sun's mass consists of hydrogen, whereas the rest is mostly helium, and much smaller quantities of heavier elements, including oxygen, carbon, neon and iron.
The core is the hot,
dense central region in
which the nuclear reactions
that powers the Sun takes
place.It comprises about
25% of the interior
The radiative zone
of the sun starts at about 25%
of the radius, and extends to about
70% of it. In the radiative zone, energy
is transferred by a process called thermal radiation. During this process, photons that were released in the core travel a short distance, are absorbed by a
close-by ion,released by that ion, and
absorbed again by another.
Sun’s visible surface, is the next layer of
the Sun.The bubbling motion of the
convection layer makes the granular patterns
we see on the photosphere. The granules may
look small in pictures, but scientists estimate
they are really about the size of the Moon.
Sunspots ,indicating giant
magnetic storms ,are also visible
on the photosphere. Most of the
time sunspots come in pairs like the
poles of a magnet.This layer of the
Sun has cooled off to 10,000 degrees
Fahrenheit and the Sunspots are
even cooler—about 7,800 degrees

Just above the photosphere
is the chromosphere with
huge solar flares and loops of hot
gases shooting up thousands of
miles. The temperature is
estimated to be 50,000 degrees
The corona is the wispy outermost layer of the solar atmosphere, and can extend millions of kilometers into space. Gases in the corona burn at about 1 million K (1 million° C, 1.8 million° F), and move about 145 kilometers (90 miles) per second.
Coronal holes are areas where the Sun's corona is darker, and colder, and has lower-density plasma than average because there is lower energy and gas levels.
Solar flare or Flares are
tremendous explosion on the Sun
that happens when energy stored in 'twisted' magnetic fields (usually
above sunspots) are suddenly
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.
The Sun’s next layer is the
CONVECTION ZONE. Convection is
how energy moves from the inner parts
of the Sun to the outer part of the Sun
that we see. We can see convection when
we look at a pot of boiling water. The
Sun’s convection zone is a bubbling 2
millions degrees Fahrenheit
Full transcript