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Transcript of Continetal Drift
hypothesis of continental drift. This
idea that the continents move slowly
over millions of years, parallel to Earth's surface Drifting Continents Wegener proposed that millions
of years ago, the continents formed
one HUGE landmass. He named this
ancient supercontinent Pangaea Pangaea Breaks Apart Fit of the Continents Wegener collected fossil evidence
to support his continental
drift hypothesis. Fossil Evidence Geologists can identify groups
of rocks, like you match train tracks. Wegener showed that certain types of rocks and mountain ranges on the continent
would match up if the
continents were arranged to
form Pangaea. Wegener was a meteorologist who studied
weather and climate. He found that
ancient rocks carved by glaciers were
across Africa, India, and Australia.
These places are much too warm to
have had a glacier. Therefore, ancient climate evidence supports the existence
of Pangaea, a super continent. The most obvious evidence
for continental drift is the geographic fit of the continents. Imagine the continents
pieced back together, like
pieces of a puzzle * South America fits in the notch of West Coast of Africa
* Africa fits right in the space of North and South America He wanted to learn where plants and animals from the time of Pangaea lived. Glossopteris Wegener found that the glossopteris, a fern seed, was discovered in South America, Africa, India, Australia, and Antarctica. Cynognathus Mesosaurus Lystrosaurus It was a predator of the early Triassic period that was about 1 meter long. This mammal like creature had its bones located in South America and Africia. It is a reptile known
as "middle lizard" Its bones were located on the south ends of
South America and Africa It was a shovel lizard. It was the size of a pig that loved to dig. Its bones
were located on Africa, India,
and Antarctica Rock Types and Mountain Ranges Ancient Climate Evidence Write a summary with two to three sentences using Alfred Wegener's four evidences for continent drift Ticket out the door.