Purpose Statement: To inform my audience about solar flares
INTRO
I. Solar flares are violent eruptions of gases that release ultra-violet radiation, x-rays and gammy rays. It's an enormous explosion of hydrogen and helium above the sun surface.
A. It's a sudden rapid and intense variation in brightness that happens every eleven years
B. They usually last an average of 20 minutes and are a remarkable phenomenon.
C. Imagine gigantic blobs of materials held together by powerful magnetic forces. All of a sudden they launch into earth's magnetosphere.
D. The first one that was record was on Sept. 1, 1859
BODY
I. There is three stages, which are precursor, impulsive and decay stage.
A. The precursor stage- the magnetic energy begins to release and soft rays x-ray emission is detected.
B. Impulsive stage- protons and electrons are accelerated and radio waves, hard x-rays and gamma rays are
C. Decay stage- shows gradual build up and decay of the soft x-rays
1. The duration of these stages can last for just three seconds or as long as an hour.
II Solar flares have a direct effect on the earth's atmosphere. The intense radiation from it travels to earth in eight minutes and as a result.
A. The earth's upper atmosphere becomes more ionized and expands.
B. Long distance radio signals can be disrupted by the resulting change in the earth's ionosphere.
C. A satellites orbit around the earth can be disturbed by the enhanced drag on the satellite from the expanded atmosphere.
D. Satellites electronic competent can be damaged.
E. Examples of what have happened.
1. The July 1996 a solar flare was considered fairly moderate. Twenty minutes after the flare ripples appeared on the sun surface looking like ripples in a pool of water.
2. In Los Angeles an earthquake accompanied a solar flare that spewed a huge bubble of sure heat gas.
CONCLUSION
I. Solar flares are studied because they are such powerful explosions that are little understood and cannot be predicted.
b) The electrons of transition metal ions are easily excited and consequently absorbed in the visible region i.e. these ions give colored compounds.
At 5:12 a.m. on April 18th, 1906, the California city of San Francisco was awoken by a 7.8 magnitude earthquake. Chaos erupted with the earthquake leading to fire break outs throughout San Francisco (Cameron and Gordon. Pgs 69-73).The earthquake and the resulting fires caused destruction to majority of the city with buildings crumbling and igniting into flames. Many people died along with thousands and thousands of people being left homeless. This devastating earthquake left the city and United States in a financial crisis. Although the 1906 earthquake was one of the worst natural disasters in U.S. history, the city of San Francisco was able to overcome these substantial physical, social and economic impacts it had.
One of the worst natural disasters in United States history to this date occurred almost 109 years ago. On April 18, 1906 at 5:15am in San Francisco, California, the earthquake of San Francisco occurred hitting between 7.9 and 8.3M on the Richter scale. The San Andreas Fault, which is about 600 miles long, running from the Gulf of California to Cape Mendocino and is an active strike-slip fault, cut through the continental lithosphere to cause the San Francisco Earthquake of 1906. An earthquake is a trembling or shaking of the ground produced by movements along a fault (Strahler, 2012). After the tension is released at a critical point, the fault or tectonic plate slips and relieves the strain and creates the seismic waves, which radiates out in all directions causing the shaking of the surface.
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Flying debris caused many injuries like tornadoes. A fire storm of winds followed the detonation
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"Space Weather, Solar Flares & Sun Storms: Latest News." Space.com. N.p., n.d. Web. 20 Dec. 2013. http://www.space.com/topics/solar-flares-space-weather-latest-news/
On the night of April 18, 1906, the whole town was woken by erratic shaking. Although the earthquake lasted under a measly minute, it caused significant damage. Many fires started all throughout the city; San Francisco burned in turmoil.
During ancient times very little was know about. Some of the ancient Greek philosophers connected earthquakes to
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Katrina and the huge lightning strike fires that happened in California during 2008 that left many
Hello everyone! Today I will be speaking about global warming but before I begin, how many of you believe that global warming exists and that the human population is the primary cause of global warming? I ask this because there are people who believe that global warming does not exist or that it’s “a hoax created by China”. But that’s not true and global warming is in fact one of the biggest problems facing the world today. There is a significant amount of negative effects for the environment and for all living beings due to global warming. And maybe some of you are not be interested in global warming, but the truth is, global warming is a big part of our world and it affects each and every one of us.
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