6 pieces of evidence for continental drift

%PDF-1.4 Mountain Ranges. There are various examples of fossils found on separate continents and in no other regions. Africa and South America fit nearly perfectly. A discussion of some of the evidence supporting continental drift on Earth. Continents fit like Puzzle Pieces. <> Be on the lookout for your Britannica newsletter to get trusted stories delivered right to your inbox. Festival of Sacrifice: The Past and Present of the Islamic Holiday of Eid al-Adha. Fossils of the Mesosaurus, an ancient freshwater reptile found in the southern parts of South America and Africa, also indicate that the two continents could have once been one solid continent that drifted apart, since the reptile could not have swum across the ocean. One indication of this possibility is the appearance of the western African and eastern South American coasts, which look like two interlocking jigsaw puzzle pieces. <> n�3ܣ�k�Gݯz=��[=��=�B�0FX'�+������t���G�,�}���/���Hh8�m�W�2p[����AiA��N�#8$X�?�A�KHI�{!7�. 7 0 obj "F$H:R��!z��F�Qd?r9�\A&�G���rQ��h������E��]�a�4z�Bg�����E#H �*B=��0H�I��p�p�0MxJ$�D1��D, V���ĭ����KĻ�Y�dE�"E��I2���E�B�G��t�4MzN�����r!YK� ���?%_&�#���(��0J:EAi��Q�(�()Ӕ[email protected]���P+���!�~��m���D�e�Դ�!��h�Ӧh/��']B/����ҏӿ�?a0n�hF!��X���8����܌k�c&5S�����6�l��Ia�2c�K�M�A�!�E�#��ƒ�d�V��(�k��e���l ����}�}�C�q�9 According to National Geographic, sea floor spreading and plate tectonics indicate that the continents do move or shift, which supports continental drift theory. 1. Announcing our NEW encyclopedia for Kids. 4 pieces of evidence for continental drift by Alfred Wegener (An Analysis of – Evidence and Rejection of the Theory) During the second and third decades of the twentieth century, the notion of continental drift was revived, most notably by the German meteorologist and geophysicist Alfred Wegener.. Wegener put together the first comprehensive theory to describe and partially … 6. endobj If you take a look at a map of the earth today, you will see the current locations of broken land masses that constitute the earth. Another indication of continental drift is tectonic activity and seafloor spreading. <> Matching Rocks. ��w�G� xR^���[�oƜch�g�`>b���$���*~� �:����E���b��~���,m,�-��ݖ,�Y��¬�*�6X�[ݱF�=�3�뭷Y��~dó ���t���i�z�f�6�~`{�v���.�Ng����#{�}�}��������j������c1X6���fm���;'_9 �r�:�8�q�:��˜�O:ϸ8������u��Jq���nv=���M����m����R 4 � However, would you believe if someone told you that these broken land masses were once connected to each other as one huge supercontinent? When this occurs, the sea floor grows wider, pushing the two continents apart. 4. Another important piece of evidence in the Continental Drift theory is the fossil relevance. �V��)g�B�0�i�W��8#�8wթ��8_�٥ʨQ����Q�[email protected]�&�A)/��g�>'K�� �t�;\�� ӥ$պF�ZUn����(4T�%)뫔�0C&�����Z��i���8��bx��E���B�;�����P���ӓ̹�A�om?�W= Climaterefers to a pattern of wind, temperature, and rain or snow that occurs in a region over time. �x������- �����[��� 0����}��y)7ta�����>j���T�7���@���tܛ�`q�2��ʀ��&���6�Z�L�Ą?�_��yxg)˔z���çL�U���*�u�Sk�Se�O4?׸�c����.� � �� R� ߁��-��2�5������ ��S�>ӣV����d�`r��n~��Y�&�+`��;�A4�� ���A9� =�-�t��l�`;��~p���� �Gp| ��[`L��`� "A�YA�+��Cb(��R�,� *�T�2B-� H���yTSw�oɞ����c [���5la�QIBH�ADED���2�mtFOE�.�c��}���0��8�׎�8G�Ng�����9�w���߽��� �'����0 �֠�J��b� 8 0 obj stream endobj 3. What Evidence Is There of the Continental Drift Theory. By signing up for this email, you are agreeing to news, offers, and information from Encyclopaedia Britannica. Evidence for Continental Drift. Sea floor spreading further supports the continental drift theory. 2. ), The Secret Science of Solving Crossword Puzzles, Racist Phrases to Remove From Your Mental Lexicon. Scientists agree that continents rest on rocks called tectonic plates, which shift and move. Continental drift is a theory originally proposed by Alfred Wegener, who believed the continents were once one large continent known as Pangaea that later separated into several continents. Sea floor spreading further supports the continental … 2y�.-;!���K�Z� ���^�i�"L��0���-�� @8(��r�;q��7�L��y��&�Q��q�4�j���|�9�� endobj Evidence for Continental Drift. Scientists agree that continents rest on rocks called tectonic plates, which shift and move. Wegener gathered evidence for his hypothesis from fossils, from studies of ancient climate, and from the geology of continents. Is the Coronavirus Crisis Increasing America's Drug Overdoses? -Diamond like rocks found in South America and Brazil. 5 0 obj Fact Check: What Power Does the President Really Have Over State Governors? Other fossil evidence also supports the theory of continental drift. %���� Finding fossils of the Mesosaurus on the southern hemispheres of both continents is a further indication that the two continents were once together and later drifted apart. Sea floor spreading indicates that since the continents presently move apart, previous continental drift was possible and probable as well. Many rocks from Argentina were identical to those found in South Africa. Earth’s climates have changed many times in the planet’s long history. Chapter 6:Plate Tectonics 191. Fossils. Fossils - certain fossils preserved in rocks of the same age but from different continents. <> 6 0 obj The earliest marine fossils found along the eastern coast of South America and the western coast of Africa date from about 150 to 200 million years ago, suggesting that the Atlantic Ocean did not exist prior to that time. Ex. endobj N'��)�].�u�J�r� Theory of the Continental Drift. 3. Finding fossils of the Mesosaurus on the southern hemispheres of both continents is a further indication that the two continents were once together and later drifted apart. Scientists have long noticed the similarity between the two coastlines, but it was not until the 20th century that evidence could support a theory that the continents were once connected. Another indication of continental drift is tectonic activity and seafloor spreading. <> 11 0 obj Looking at a map of the world, it appears that the eastern edge of South America and the western edge of Africa could fit together like interlocking puzzle pieces. As molten rock rises from the Earth, it forms new crust between the plates. �ꇆ��n���Q�t�}MA�0�al������S�x ��k�&�^���>�0|>_�'��,�G! Puzzle - like fit of continental shelves. Glossopteris - plant remains found in South America, Australia, Asia and Africa. Will 5G Impact Our Cell Phone Plans (or Our Health?! Well, this claim was made in the 90s by Alfred Wegener, a German polar researcher, meteorologist and geophysicist who died in 1930. Heavy glaciers carve grooves in the rock as they move across land.

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