auroras: natures light show
DESCRIPTION
Auroras: Natures Light Show. Casey Johnson Science Mr. Shepard. What Are They?. Auroras Can Be Described As Light Phenomenon Combination of light and colors Dance around the sky Also called the Northern Lights. Auroras Are Caused By. Suns Solar Winds Earths Magnetic Field - PowerPoint PPT PresentationTRANSCRIPT
Auroras: Natures Light Show
Casey JohnsonScienceMr. Shepard
What Are They?Auroras Can Be Described As
Light PhenomenonCombination of light and colors
Dance around the skyAlso called the Northern Lights
Info: How StuffWorks, www.howstuffworks.com, 1998- 2013 Pic:Austrailas, www.cheifscientist.gov
2013
Auroras Are Caused By Suns Solar Winds
Earths Magnetic Field These 2 things have to interact
Info: How Stuff Works, www.howstuffworks.com, 1998-2013 Pic: NASA, www.nasa.gov,
2011, Stephane Vetter
How Long Do They Go On??? They last 15-40 minutes Reoccur every 2-3 hours
Info: Antartic Connection, www.antarcticconnection.com, 1998-2013 Pic:NASA, www.nasa.gov, 2008, Jeffrey R. Haprman
Info: Antartic Connection, www.antarcticconnection.com, 1998-2013
When Are They Most Frequent?
• Mostly from Late Autumn to Early Spring
• Usually every year
Info: Antartic Connection, www.antarcticconnection.com, 1998-2013
What Damage Can They DoCost No Cost
Damage Disrupt Radio Communications
Damage Satellites Disrupt Power
Stations/ Power lines
Fun Facts1. Vikings thought the Auroras where
reflections of armor of the Mythical Valkyries
2. Native Eskimos thought the Auroras where communications from the dead
3. American Indians thought Auroras where HUGE campfires
Info: How Stuff Works, www.howstuffworks.com, 1998- 2013