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What do we know about the sun?

                    http://www.nasa.gov/multimedia/imagegallery/image_feature_21.html
 The Sun is a STAR!
 It would take over 1,000,000 (1 million) Earth’s to fit inside of the Sun.
 The Sun is over 5 billion years old.
 The Sun is very hot, about 27 million degrees Fahrenheit at its core!
 The Sun is the center of our solar system. The Earth and the other
  planets travel around the Sun.
 The Earth is made up of mostly helium and hydrogen.
 The Sun is 93 million miles from Earth! It is the closest star to Earth!




                                                           http://www.flickr.com/photos/hobbesken/235438038/
         Why is sunlight important?
 If you place your hand on a window
  where the sun is shining in, you will
  feel the Sun’s heat. The Sun’s heat
  keeps the ground and air warm.
 Plants need sunlight to make food
  that keeps them growing. When
  plants make food they give off
  oxygen, a gas that people and
  animals breathe. We also eat
  plants to live.
 The sun helps you when you are
  lost! If you face the Sun in the
  morning, your direction is east. In
  the after noon, you face the Sun to
  the west. How can this help you if
  you are lost?
 The Sun can also help you to tell
  what time of day it is.



                                          http://fc03.deviantart.net/fs30/f/2008/119/6/c/summer_sun_by_neuthreeno.jpg
Solar Flares
 Huge events take
  place on the Sun’s
  surface, this is called
  solar activity.
 Solar flares are one
  kind of activity in
  which streams of
  superheated gas leap
  thousands of miles off
  the Sun’s surface into
  space!




                            http://www.lpl.arizona.edu/undergrad/classes/spring2009/Hubbard_206-2/Lectures1/Jan27.htm
                            Sundials!
 You will each get your own paper plate, one
  straw, a pair of scissors, one ruler and some
  tape.
 Using a ruler, make a mark at the center of the
  plate.
 Mark on your plate, where you want north, east,
  south and west to be.
 Using the scissors, make four cuts in your straw
  (wait for me to demonstrate how to do it).
 Tape the straw perpendicular to the plate.
 Using your ruler, measure the straw from the
  base, and cut it to two inches in height.



                                                     http://farm3.static.flickr.com/2661/3744021999_cb362dfa47_o.jpg

				
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posted:8/1/2012
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