Download
1 / 12
120 likes | 373 Views
A Volcano. Plate Tectonics PowerPoint. By: Daniel Luddeke. Earthquake Damage. Section #1 History of Pangaea.
E N D
A Volcano Plate Tectonics PowerPoint By: Daniel Luddeke Earthquake Damage
Section #1 History of Pangaea • The theory of Pangaea was originated by Alfred Wegener who was a German Scientist. He lived from 1880-1930 and was also an a accomplished Astronomer and Meteorologist. During this time he came up with a theory. The theory was called Pangaea or a super continent. Pan” means all and “Gaea” means earth so all together it means “all of the earth”. Pangaea occurred during the Carboniferous period which happened about 3 million years ago. He originally came up with this theory in 1912 but it was not accepted by other scientists. It was not until 1950 (20 years after Wegener died) that they finally began accepting it. His studies of meteorology and astronomy helped with this discovery because they could see if space and gravity could have played a role in the making of Pangaea and also if weather contributed. During this period of time the contraction theory was being discussed. The Contraction theory is where they said that the sun could not be more than 20 million years old. It also said that the suns energy was coming from gravitational contraction. P.M.S. Blackett and S.K. Runcorn assisted in Wegener’s theory. They came from two colleges and provided data that helped Wegener's theory and convinced scientists to accept it.
Section 2 Convergent Boundaries • It is where 2 plates collide and cause mountains to form, Volcanoes to erupt (and form), earthquakes to occur, and Trenches and Mudslides to happen. There are 3 possibilities that can occur between oceanic and continental plates. They are oceanic- continental, oceanic- oceanic and continental- continental. They all result in the same basic things (listed in the 1st sentence). oceanic- continental continental- continental oceanic- oceanic
Section 2 Questions and Answers • In your own words thoroughly define a convergent Boundary. Answer: It is the meeting place or boundary where 2 plates (oceanic or continental or both) collide and cause a series of natural disasters. • Which of these hazards are characteristic of a convergent boundary: Earthquakes? Volcanoes? Mountains? Trenches? Mud/landslides? Other? Answer: All of these natural disasters can occur when 2 plates collide at a convergent boundary. Also Tsunamis can occur from this.
