Topics: Hurricane Katrina, Tropical cyclone, Earth Pages: 5 (1363 words) Published: February 11, 2013

Task 1 Section 1

Many ancient cultures believed the Earth was flat and surrounded by water. Scientific discoveries through the course of history has proven this false.

Flat Earth Image (2012) Retrieved 4/20/2012 from:

Task 1 Section 1

Ancient cultures did not believe the Earth to be the spherical object we know Earth to be today. The ancient Chinese people believed the sky was a round dome surrounded by a square Earth. Ancient Egyptian’s believed the world to be a flat disk floating in the ocean. Many followers of the writings in the bible interpreted the angels standing in the four corners of the Earth as a reference to a flat Earth. (Russel, 1997)

Over the course of centuries, our understanding of the solar system and what part our planet plays in the galaxies expanded. Although some of the theory's were not readily accepted by the masses, overtime, scientific discoveries could not be refuted and the round earth concept could not be refuted.

^ Russel (1997) The Myth of the Flat Earth Retrieved from

Task 1 Section 1

Around 500 BC, Pythagoras theorized that the Earth was round because the moon was round. He observed the moon as it moved through its orbital cycle. Specifically the line between the part of the moon in the light and in the dark. (Unknown Author, 1999)

The concept that the Earth was not flat, but a sphere dates back to the 6th century by the Greek. Aristotle, who was a Greek philosopher, advocated the Earth was a sphere. He came to this conclusion by observing the circular shadow cast on the moon during a lunar eclipse. (Fowler, 2008) Eratosthenes calculated the Earth circumference in 240 BC using trigonometry. His knowledge of the angle of elevation of the sun at noon. He based the calculations on the assumption the Earth was a sphere and the suns rays were parallel. (Rubins, 2003)

^ Unknown Author (1999) Greek Anatomy retrieved from ^ Fowler (2008) Aristotle retrieved from ^ Rubins (2003) Eratosthenes retrieved from

Task 1 Section 1

As more and more early scientists made discoveries within our Milky Way galaxy and beyond, the mass’s accepted the theory that the Earth was a sphere. In 1492, Columbus and his three commissioned ships made a voyage heading west to lay claim to the land in the east. By traveling west to make land fall to the east would provide significantly improved trade routes, saving a lot of time. Although the trip lasted a lot longer than expected and the land he reached wasn’t where he was expecting to end up, this epic adventure paved the way for many more explorers to reach new land without the fear of falling off the edge of the Earth. If the Earth was not round, how would:

 Satellites and other man made space vehicles would have a impossible time orbiting the earth?

 Efficient air travel across the continents and oceans?

Task 1 Section 2

August 29, 2005 hurricane Katrina made landfall in southeast Louisiana. What started as a category 1 storm over the Bahamas, strengthened over the warm Gulf waters and made landfall as a category 3 storm. The catastrophic failure of the levee system allowed the surge of sea water to flood the city of New Orleans making this storm the most costliest nature disaster as well as making the list of the top 5 deadliest hurricanes in the history of the United States. (Shah, 2005) President Bush declared a state of emergency two days after making landfall. FEMA and other government and...
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