Aurora Lights Gabriela Arellano Mrs. Reed Physical Science Period 5 Spring 2010 http:// uscw.canada.travel/northernlights?...
What are they? <ul><li>Auroras, also known as northern and southern (polar) lights or aurorae, are natural light displays ...
How they form: <ul><li>When charged protons and electrons emitted from the sun penetrate earths magnetic shield and collid...
When & Where They Occur: <ul><li>Aurora borealis occurs in an oval area located above the magnetic poles.  </li></ul><ul><...
Historical Occurrences: <ul><li>The auroras which occurred as a result of the great geomagnetic storm on August 28 and Sep...
Pictures (: <ul><li>http:// en.wikipedia.org/wiki/File:Aurora_Timelapse.ogv   </li></ul>http://fairbanks-alaska.com/images...
Works Cited: <ul><li>&quot;Aurora Borealis : Auroral Events Of Historical Significance.&quot;  Serving History : . Web. 27...
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Aurora lights

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Gabriela Arellano
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Aurora lights

  1. 1. Aurora Lights Gabriela Arellano Mrs. Reed Physical Science Period 5 Spring 2010 http:// uscw.canada.travel/northernlights?s_kwcid =TC|8522|aurora%20lights||S||5293021629
  2. 2. What are they? <ul><li>Auroras, also known as northern and southern (polar) lights or aurorae, are natural light displays in the sky, usually observed at night, particularly in the polar regions. </li></ul><ul><li>They typically occur in the ionosphere. </li></ul><ul><li>In northern latitudes, the effect is known as aurora borealis, named after the roman goddess of dawn, Aurora, and the Greek name for north wind. Boreas. </li></ul><ul><li>Auroras occur frequently and are able to be seen with the naked eye if the sky is dark enough. </li></ul>http://upload.wikimedia.org/wikipedia/commons/thumb/a/aa/Polarlicht_2.jpg/800px-Polarlicht_2.jpg
  3. 3. How they form: <ul><li>When charged protons and electrons emitted from the sun penetrate earths magnetic shield and collide with atoms and molecules in our atmosphere auroras are formed. </li></ul><ul><li>Photons, which result from the collisions, are little bursts of lights which make up the aurora. </li></ul><ul><li>Red and green auroras are produced with oxygen collisions. </li></ul><ul><li>Pink and Purple colors are emitted through nitrogen collisions. </li></ul><ul><li>Auroras encircle the polar regions of Earth, 40-400 miles in altitude; these zones are called the “Aurora Ovals”. </li></ul>http://aurorahunter.com/images/science/How-the-Auroras-From.gif
  4. 4. When & Where They Occur: <ul><li>Aurora borealis occurs in an oval area located above the magnetic poles. </li></ul><ul><li>The best sightings occur within the oval away from artificial light and moonlight. </li></ul><ul><li>They are unpredictable, but in the northern hemisphere the season runs October to March. </li></ul><ul><li>Nordic Countries, Alaska, Canada, and Russia are the best locations to see the display of aurora lights. </li></ul>http://www.alaska-in-pictures.com/northern-lights-over-igloo-694-pictures.htm
  5. 5. Historical Occurrences: <ul><li>The auroras which occurred as a result of the great geomagnetic storm on August 28 and September 2, 1859 are thought to be the most spectacular sightings ever witnessed. </li></ul><ul><li>Bright aurora over New England and China in 1719. </li></ul><ul><li>First written description in  Bamboo Album of Chronology , 2600 BC. </li></ul>http://upload.wikimedia.org/wikipedia/commons/thumb/9/9a/Aurora_australis_20050911.jpg/220px-Aurora_australis_20050911.jpg http://upload.wikimedia.org/wikipedia/commons/thumb/6/63/Aurora_Borealis.jpg/800px-Aurora_Borealis.jpg
  6. 6. Pictures (: <ul><li>http:// en.wikipedia.org/wiki/File:Aurora_Timelapse.ogv </li></ul>http://fairbanks-alaska.com/images/aurorium.jpg http://www.visitnorway.com/ImageVault/Images/conversionFormat_12/id_511/ImageVaultHandler.aspx http://www.extremeinstability.com/stormpics/04-11-7-2224.jpg
  7. 7. Works Cited: <ul><li>&quot;Aurora Borealis : Auroral Events Of Historical Significance.&quot;  Serving History : . Web. 27 May 2010. < http://www.servinghistory.com/topics/Aurora_Borealis::sub::Auroral_Events_Of_Historical_Significance >. </li></ul><ul><li>&quot;Aurora.&quot;  Wikipedia, the Free Encyclopedia . Web. 27 May 2010. < http:// en.wikipedia.org/wiki/Aurora_(astronomy )>. </li></ul><ul><li>&quot;Aurorae.&quot;  University at Albany - SUNY . Web. 27 May 2010. < http://www.albany.edu/faculty/rgk/atm101/aurora.htm >. </li></ul><ul><li>&quot;How the Auroras Form.&quot;  AuroraHunter.com - Your Guide to the Northern Lights and Aurora Borealis Photos . Web. 27 May 2010. < http:// aurorahunter.com/aurora.php >. </li></ul>
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