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Informative Speech

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by

Sarah Stickley

on 19 February 2013

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Transcript of Informative Speech

photo credit Nasa / Goddard Space Flight Center / Reto Stöckli Informative Speech Aurora Borealis What Does Aurora
Borealis Look Like? A stream of different colored lights that flow through the sky. How does it form? Starts from sun
Pressure buid's up
Hydrogen atoms squeezed into Helium atoms
Gas pushed to surface and breaks off
Substance from sun is plasma
Process of plasma moving through universe is a solar storm
Plasma travels past Murcury past Venus
Takes 18 hrs for plasma to travel from the sun to earth What happens when
plasma gets to earth? Earth's magnetic field deflects the solar storm
Two fields combine
Creates a funnel
Gas streams down on daylight side
Daylight aurora
Magnetic fields stretch back and join together
Gas streams along magnetic lines on the night side
Nighttime aurora Important Facts about Aurora Borealis Only happens on the northern and southern hemispheres
Labeled as a natural phenomenon
Mainly happens in the winter time
Northern lights
People travel from around the world to see this light show
Lasts 60-90 minutes at a time Aurora Borealis Beautiful, but Disruptive Lights beautiful but disruptive
International team of scientists are building a rocket
Rocket will examine northern lights
Examine space weather
Find out why GPS signals are interrupted
Find a solution to fix interruptions
Rocket is designed to fly through aurora
Fly around 217 miles high
Rocket launched Februrary 18, 2012
No information on what they have found yellows
greens
reds
purples
blues In Conclusion Even though aurora borealis can be disruptive, it can also be beautiful
Why should you see it? Well, how often do you get to see a natural phenomenon? Salat, Todd. "How the Aurora Borealis Form." AuroraHunter.com. Todd Salat, 2013. Web. 19 Feb. 2013.
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