https://padlet.com/alexm5_8/fesvq73coahs Made with ♥ en-us 2020-01-30 18:15:49 UTC 2025-11-08 16:24:43 UTC hello@padlet.com alexm5_8 https://padlet.com/alexm5_8/fesvq73coahs/wish/438351432
Alfred Wegener, born in 1880, was a meteorologist and explorer. In 1910, he noticed that South America and Africa appeared to fit together like puzzle pieces. Wegener also found rocks of the same type and age on both sides of the Atlantic Ocean. He thought that it could not be a coincidence. He wondered if they were both once joined and then moved apart.]]> 2020-01-30 18:15:59 UTC https://padlet.com/alexm5_8/fesvq73coahs/wish/438351432 alexm5_8 https://padlet.com/alexm5_8/fesvq73coahs/wish/438351737
The seafloor has a large mountain range running through it. Deep trenches are found far from the ridges. Guyots have eroded tops that are deep below sea level. The magnetic polarity of the seafloor changes. The center of the ridge is of normal polarity. Stripes of normal and reverse polarity are found symmetrical on both sides of the ridge. In some places, the oceanic crust comes up to a continent.]]> 2020-01-30 18:16:21 UTC https://padlet.com/alexm5_8/fesvq73coahs/wish/438351737 alexm5_8 https://padlet.com/alexm5_8/fesvq73coahs/wish/438351897
There are a dozen major and several minor plates. Each plate is named for the continent or ocean basin it contains. Some plates are made of all oceanic lithosphere. A few are all continental lithosphere. But most plates are made of a combination of both. ]]> 2020-01-30 18:16:33 UTC https://padlet.com/alexm5_8/fesvq73coahs/wish/438351897 alexm5_8 https://padlet.com/alexm5_8/fesvq73coahs/wish/438352214
Scientists have determined the direction that each plate is moving. Convection within the Earth’s mantle cause the plates to move. Mantle material is heated above the core. The hot mantle rises up toward the surface As the mantle rises, it cools. At the surface, the material moves horizontally away from a mid-ocean ridge crest.]]> 2020-01-30 18:16:55 UTC https://padlet.com/alexm5_8/fesvq73coahs/wish/438352214 alexm5_8 https://padlet.com/alexm5_8/fesvq73coahs/wish/438352471
The theory of plate tectonics is what brings together continental drift and seafloor spreading. Plates are made of lithosphere topped with oceanic and/or continental crust. The theory of plate tectonics explains most of the features of Earth’s surface. It explains why earthquakes, volcanoes and mountain ranges are where they are.]]> 2020-01-30 18:17:14 UTC https://padlet.com/alexm5_8/fesvq73coahs/wish/438352471 alexm5_8 https://padlet.com/alexm5_8/fesvq73coahs/wish/438359136 1.https://cdn.pixabay.com/photo/2019/05/26/00/26/earth-quake-4229438_960_720.png
2.https://upload.wikimedia.org/wikipedia/commons/1/12/U.S._Seismic_Hazard_Maps.gif
(Copy and Paste because I couldn't find out how to paste it and its the same with the videos.)]]> 2020-01-30 18:25:03 UTC https://padlet.com/alexm5_8/fesvq73coahs/wish/438359136 alexm5_8 https://padlet.com/alexm5_8/fesvq73coahs/wish/438361090 1.https://www.youtube.com/watch?v=kwfNGatxUJI
2.https://www.youtube.com/watch?v=ryrXAGY1dmE]]> 2020-01-30 18:26:57 UTC https://padlet.com/alexm5_8/fesvq73coahs/wish/438361090