THE SUN
It’s big!It’s bright!It’s necessary!
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http://www.nasa.gov/images/content/665490main_20120705_114522-orig_full.jpg
3-2-1 THE SUN
In your notebook write the following: Three things you already know about the
Sun Two things you find interesting about the
Sun One question you still have about the Sun
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3-2-1 POSSIBLE ANSWERS
The Sun is a star. It is a large ball of gas. The provides energy for us on earth. The Sun is a yellow star. It is a main
sequence star. It is really hot. It produces energy through nuclear fusion Question- Why does it have
temperatures? How is the Sun similar to Earth?
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NASA SUN SONG
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https://c1.staticflickr.com/9/8249/8515999093_0b07ef52ed_z.jpg
REVIEW HEAT TRANSFER
Radiation-energy transfer as particles or waves Hand wiggles like a snake or wave up and
down Conduction- energy transfer by touching
Clap hands together Convection- energy transfer by
circulation or movement in a liquid or gas Hand moves in a circular path
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STRUCTURE OF THE SUN (LAYERS)
1. Core2. Radiative zone3. Convective zone4. Photosphere5. Chromosphere6. Corona7. Sunspot8. Granules9. Prominence
http://upload.wikimedia.org/wikipedia/commons/7/76/Sun_diagram.svg
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STRUCTURE OF THE SUN (LAYERS)
Core- center of the Sun 15,000,000º C Nuclear fusion occurs here
What is nuclear fusion again?
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http://openclipart.org/image/300px/svg_to_png/40357/applecore.png
http://upload.wikimedia.org/wikipedia/commons/4/4d/Nuclear_fusion.gif
STRUCTURE OF THE SUN (LAYERS)
Radiative zone- layer in which energy is radiated away from the core Heat moves out from the center
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Core
Convective zone
http://upload.wikimedia.org/wikipedia/commons/3/38/Heating-Radiator.svg
STRUCTURE OF THE SUN (LAYERS)
Convective zone-Layer of the Sun in which energy travels by convection Energy flows from radiative zone to the
photosphere
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http://upload.wikimedia.org/wikipedia/commons/0/08/Convection.gif
STRUCTURE OF THE SUN (LAYERS)
Photosphere (photo means light)- visible surface of the Sun Average temperature 5,527º C Layer in which energy escapes to space
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http://upload.wikimedia.org/wikipedia/commons/3/37/Sun_projection_with_spotting-scope.jpg
STRUCTURE OF THE SUN (LAYERS)
Chromosphere-The middle layer of the Sun’s atmosphere Temperatures reach 6,000º C
(C) Copyright 2014 - all rights reserved www.cpalms.org http://upload.wikimedia.org/wikipedia/commons/d/d4/Sun_poster.svg
STRUCTURE OF THE SUN (LAYERS)
Corona- the outermost layer of the Sun Temperature reaches 2,000,000º C
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http://upload.wikimedia.org/wikipedia/commons/0/06/469368main_Sun_layers_unlabeled_full.jpg
STOP AND PROCESS
Take your notes and draw a picture of the Sun. Include each of the layers.
Leave space to add solar activity
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REVIEW ROTATION VERSUS REVOLUTION Does the Sun rotate or revolve?
Let’s act it out! Stand in one spot and spin in a circle. Is
this rotation or revolution? Now walk around the classroom in a circle.
Is this rotation or revolution?
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SOLAR ACTIVITY
Sunspots- dark areas on the Sun’s surface They are 1,500ºC Last days to months Activity occurs on an 11 year cycle Caused by Sun’s magnet field
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http://upload.wikimedia.org/wikipedia/commons/thumb/2/28/Sunspot_Numbers.png/800px-Sunspot_Numbers.png
SOLAR ACTIVITY
Solar Flares- an explosion of energy from the photosphere Can extend as far as Corona
Watch quick videohttp://www.youtube.com/watch?v=Jy-LTMjVFCw
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http://xdem.free.fr/uploaded_images/TRACE_SolarFlare-742697.jpg
SOLAR ACTIVITY
Prominences- Huge loops of cool gas that go out from the photosphere
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http://i.ytimg.com/vi/J1rs7CTlOP8/0.jpg
LET’S ACT IT OUT
Solar Flare- Make a Y with your arms
Solar Prominence- Make an O with your arms above your head.
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https://openclipart.org/image/300px/svg_to_png/191801/Happy_Boy_.png
FINISHING YOUR DIAGRAM
Add examples of the solar activities to your model( Sunspots, solar flares, prominences)
Get with your group and compare your diagrams. Fix them until they are all perfect.
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NAME THAT FEATURE
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