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Informative Speech On Pangaea

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Informative Speech On Pangaea
Hello, I am Alfred Wegener, and I believe that 250 million years ago, the earth was at one point joined together in one massive super continent which I call Pangaea. I know it may sound crazy, but I have 3 reasons for you that support my theory. My first piece of evidence is, that I have discovered that some fossils, have been found on multiple continents all across the world. One of these fossils is one called Glossopteris. Glossopteris was a fern like plant which grew abundantly a long time ago. But why was it found on different continents? The seeds of glossopteris were too heavy to have drifted in the wind, and the plant itself is too fragile to actually float across the ocean. I believe that this plant might have grown across the continental borders, when Pangaea existed. My second piece of evidence is, that many land forms like mountain ranges, can fit together with other mountain ranges on different continents. In fact if you cut out a map, they would fit together perfectly. There are also coal deposits that have been found near Antarctica. Now, if you may not have already known, coal only forms in swampy areas, when dead plants are covered up, and then, because of enormous amounts of heat and pressure, those dead plants will go through a chemical change in which it turns into stone. Now, Antarctica is located …show more content…

Like I just stated, Antarctica would have had to be close to the equator in order to have coal. But, massive scratches in the earth found in Africa may suggest that there might have been some glacier activity. But, just like Antarctica today, Africa is has a very warm climate that could not have possibly been able have glaciers on it without them melting. But, I believe that Africa was once in a location much like Antarctica is today, where it was cold enough to support glaciers. So, I believe that instead of having climate zones shift around, It is in fact the continents that have shifted

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