1.Carbon and oxygen
3.Water
Wednesday, January 16, 2013
Wednesday, January 2, 2013
Threshold 1: Is the big bang and the creation of everything.
In the beginning everything was
compacted in a small molecule.
Cause: some unknown thing it was very hot and dense in the space then it started to expand then it got got cold then everything expanded in a explosion.
Effect: then everything got cold and then it made protons and electrons they didn't equal out and everything was still atoms started to form and expansion of the universe again, it formed everything.
Alternate: The creation story is said that god created everything. Many religious people believe this.
Threshold 2: This is the stars.
Cause: The Big Bang gases an dust compressed together and after 50 million years or so stars began to form.
Effect: We have elements and makes night more distinctive in the night sky there are more stars than there are grains of sand on every beach on the earth.
Alternate: ASTRAIOS was the Titan god of the stars and planets, and the art of astrology. By Eos he was the father of the seasonal Winds and the Stars. The arrival of these Winds was heralded by the rising of certain constellations. Eos created the stars in the night sky.
Threshold 3: these are the elements
Cause: When stars were made from the Big Bang. Threshold 3 was caused from the stars blowing up it would take thousands of years for electrons to combine with them and create electrically neutral atoms. The first element produced was hydrogen, along with traces of helium and lithium. Giant clouds of these primordial elements would coalesce through gravity to form stars and galaxies, and the heavier elements would be synthesized either within stars or during supernovae.
Alternate:Once the child, Zeus, had reached manhood his mother instructed him on how to trick his father to give up his brothers and sisters. Once this was accomplished the children fought a mighty war against their father. After much fighting the younger generation won. With Zeus as their leader, they began to furnish Gaia with life and Uranus with stars.Soon the Earth lacked only two things: man and animals. Zeus summoned his sons Prometheus (fore-thought) and Epimetheus (after-thought). He told them to go to Earth and create men and animals and give them each a gift when he created the earth he made elements
Pangea
Bryce VanLangen
Mrs.Keehn
Pangea
was the super continent on the planet during the Mesozoic period. It consisted of all of today’s continents all
pushed together on one side of the earth.
It is inevitable that Pangea will form again whether man is there to see
it or not. The continents are still
moving. For example, Hawaii is moving
away from the lower 48 at a rate of approximately 2 inches per year.
The climate of Pangea
was very different from today’s climate. The temperature on Pangea would swing
wildly between seasons. In the summer
the temperature could reach highs of over 150 degrees. This was due to a super green house effect. Estimates say that C02 levels were as high as
10 times the levels seen today. If you
could travel back in time to the Mesozoic period, you would see massive plant
life and dinosaurs. At the center of Pangea,
it was believed to be a huge dessert with a swinging climate. The general rule
of thumb with climate is the farther away you get from the ocean or a large
body of water the more of a variation in temperature you get between seasons. The weather on Pangea would be brutal. Since
all the land mass of earth was on one side, storms would be super powered. Storms gain strength when they travel over
the ocean, so with storms traveling over oceans for half the earth, hurricanes would
make landfall and destroy everything in their path. Tornadoes would be ten
times more powerful from what we see today.
We don’t know much
about plate tectonics, but what we do know is that when plates rub together
they make earthquakes and volcanoes. With
all the continental plates so close together we can imagine that earthquakes
and volcanoes would be a weekly occurrence. Based on where the ring of fire
lies today (around the Pacific Ocean), this would be approximately around the outside of where Pangea was located. This could mean that volcanoes and
earthquakes would be much more frequent on Pangea than of what we see today. Alfred Wenger suggests that the continents were like puzzle pieces and that the plate tech tonics were constantly in motion this is what I got out of the video.
Bibliography
https://course.bighistoryproject.com/Part1/Unit04-EarthSolarSystem/U4-Main-YoungEarth/Main-Part2
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