Transcript The Sun http://stardate.org/images/gallery/sun5.jpg

The Sun
http://stardate.org/images/gallery/sun5.jpg
Round and Round
(www.windows.ucar.edu/.../ seasons_orbit.5x7.jpg)
• The Sun is the center
of our solar system.
• The Earth’s
movement around
the Sun is called it’s
orbit
• It takes one year to
complete an entire
orbit around the Sun.
• During Earth’s orbit
we experience
changes in climate
called “Seasons”.
Super Size Me!
(eearthk.com/website/ images/earth/E20.jpg)
• The Sun is
approximately
1.4 million
kilometers
(870,000 miles) in
diameter.
• Meaning that 109
earth’s could fit
across its middle.
• The Sun’s interior
could hold over
1.3 million Earths
(Wow!!)
• Our sun is a mid
size star, there are
some stars larger
and smaller than it
Hot and Hotter
(www.nasa.gov/.../161863main_ hinode_sun_516.jpg)
• The outer visible
layer called
photosphere and has a
temperature of
6,000°C (11,000°F).
• The inner layers reach
temperatures of
15,000,000° C;
(27,000,000° F).
What are you made of?
(www.adlerplanetarium.org/. ../convection02.jpg)
lower left pic (www.space.gc.ca/asc/ img/sts-097_kidstation_pr..)
 Outer glare,or glow is called
the Corona
 The Chromosphere is the
layer only observable during
eclipses (lower left)
 Outer visible layer called
Photosphere
 Below Photosphere is
Convection zone
 Below Convection zone is
the Radiation zone
 Center is called the core
What's My Age Again?
(www.cnn.com/.../ images/sun.earth.lrg.jpg)
Our Sun is about
middle age for a
star of its type,
which means it is
about 4.6 billion
years old. It is
estimated that the
Sun will be around
for about another
5 billion years.
What’s in it for me?
(ixhost.eu/avaxhome/ avaxhome/2007-03-02/Sunse…)
What do clocks, shadows, and the
Sun Have in common?
(www.padillabay.gov/ brant/eximages/QUESTION.jpg)
The SUNDIAL!!
(www.londonphoto.me.uk/ inside/sundial.jpg)
•
•
ST KATHARINES DOCK DIAL
This is a large equinoctial sundial in
the form of a massive, 3.66 meters,
stainless steel ring supported by
three rigid chain link cables. The
dial was designed by Wendy Taylor
in 1973 and delineated by
Christopher St J Daniels
(http://www.sundials.co.uk/~london.htm)
Parts of the Sundial
(.gif)
http://www.math.nus.edu.sg/aslaksen/projects/sundials/images/sundial_basic
Lets do an Activity !
 Things to think about.
 Are Sundials precision instruments for
measuring time? Why or Why not?
 Are Sundials useful during all types of
weather?
Cited Sources
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www.wikipedia.com
www.cnn.com/.../ images/sun.earth.
www.nasa.com
www.stardate.org
pixhost.eu/avaxhome/ avaxhome/2007-03-02/Sunse.
www.londonphoto.me.uk/ inside/sundial.