Loading presentation...

Present Remotely

Send the link below via email or IM

Copy

Present to your audience

Start remote presentation

  • Invited audience members will follow you as you navigate and present
  • People invited to a presentation do not need a Prezi account
  • This link expires 10 minutes after you close the presentation
  • A maximum of 30 users can follow your presentation
  • Learn more about this feature in our knowledge base article

Do you really want to delete this prezi?

Neither you, nor the coeditors you shared it with will be able to recover it again.

DeleteCancel

Make your likes visible on Facebook?

Connect your Facebook account to Prezi and let your likes appear on your timeline.
You can change this under Settings & Account at any time.

No, thanks

Physics of the Sun

The Center of our Solar System
by

H P

on 14 June 2013

Comments (0)

Please log in to add your comment.

Report abuse

Transcript of Physics of the Sun

Sun
What is the Sun?
Inner Domain
Inner Domain
Outer Domain
Core:
Radiative Zone:
Convective Zone:
Interface (Tachocline) Layer:
The Center of our Solar System
• G-type main-sequence star
• Earth's source of heat, sustaining life
• Completely made up of gases
Outer Domain
Outer Domain:
Atmosphere
Outer Domain:
Atmosphere
• Composed mainly of hydrogen:
approximately 72%
• Temperature: 15,000,000 K
• Creates almost all of the sun's energy
• Made up of plasma: hot, dense gas
• Nuclear fusion occurs: hydrogen nuclei collide forming helium nuclei
Inner Domain
• Photons, particles of light, travel through dense material (at the speed of light)
• Emits radiation that disperses outward
as gamma rays and x-rays
• Temperature: 7,000,000 K
dropping to 2,000,000 K
• Photons take millions of years to reach
the next, outer layer
Inner Domain
• Radiative zone's calm motions transition to
the convective zone's fluid motions
• Thin layer between the radiative zone and the convective zone
• Energy carried by motion in the gases
transports to the exterior by convection
• Temperature: 2,000,000 K
• Convection currents develop when hot gas
from the radiative zone rises and then sinks
as the convective zone cools it
• Heat is trapped here, making fluid convect
Photosphere:
• Visible surface of the sun where visible
white light is emitted
•Limb darkening: the sun's edges are dimmer because the temperature decreases as the distance from the center increases
• Temperature: 6,000 K
• Granules: rising and falling gas
Photosphere's
Sun Spots:
• Powerful magnetic fields around sunspots cause “solar storms” like solar flares
• Sun spots: cooler areas
that appear dark because of
their interaction with the
sun’s magnetic field
• Temperature: 4,000 K which is lower than their surroundings
of about 5,800 K

Umbra: darker,
inner section
Penumbra: lighter,
outer section
• Cycle takes an average of
eleven years

• Form to be bigger than Earth
and sometimes Jupiter
• Sun's magnetic field is thought to be
generated here
Chromosphere:
Outer Domain
• High temperatures cause hydrogen to
emit white light as a pink or red color
• Only seen during total eclipses when the photosphere’s light is blocked
• Temperature: 6,000 K increasing
to 20,000 K
Corona:
• Only seen during total eclipses when
photosphere’s light is blocked
•Temperature: 1,000,000 K to 3,000,000 K
• Has a larger volume than the sun but is about a million times less bright
• Heat's source is unknown
Solar Structure
Weather
Sunspots
Corona's Solar Wind:
the Earth's magnetic field working
against a
solar wind
a solar wind
reaching as far
as the Earth
• Solar Wind: collection of
charged electrons and protons
that eject into space from the corona
• Particles escape the sun's gravity because of their high kinetic energy/temperature
• Sun's loss of material is greater than 1 million tons per second, which is insignificant to the total mass
• Travels about 400 km/s
• Produce the Aurora Borealis ("The
Northern Lights") and the tails of comets

• Sunlight takes around 8.3 minutes to reach the Earth
• The sun drives the water cycle
• The sun allows the Earth to have seasons
Outer Domain
Outer Domain
Inner
Domain
Works Cited
Physics and Chemistry: Sun
Solar Physics
Space Station Info ::
Space Solar System :: Layers Of Sun
http://www.eoearth.org/article/Sun?topic=49557#gen7
http://solarscience.msfc.nasa.gov/interior.shtml
http://www.spacestationinfo.com/layers-sun.htm
• c
6/10/13
H.P.
The Structure of the Sun
http://www.swpc.noaa.gov/Curric_7-12/Chapter_2.pdf
Full transcript