Wegener and continental drift i3 continental drift. Wegener supported his theory with evidence of fossils, mountain ranges. The theory of continental drift is taking shape in alfred wegeners mind. Print out the hand drawn puzzle and ask students to put it together how they. The existing theories of continent formation were allowed to survive, with little challenge until the 1960s. Here is the main evidence that wegener and his supporters collected for his continental drift hypothesis.
This is a rich and fascinating novel that combines the story of one mans obsession with the. The frontal edges of westward movement of continental blocks of north and south america were crumpled and folded against the resistance of the rocks of the sea floor and thus, the western cordilleras of the. Great photographic of famous authors and their takes on books. Fossil evidence of continental drift key and puzzle work sheets hyper linked fig some of the landmasses of the ancient supercontinent gondwanaland show selected geological and fossil evidence. But geologists soundly denounced wegeners theory of continental drift after he published the details in a 1915 book called the origin of. Describe the evidence wegener used to support his continental drift idea.
Pdf the continents download full pdf book download. For example, he noted how south america coast correctly lined up with the coast of northwest africa. Wegener also stated that this supercontinent started breaking into smaller continents over 250 million years ago during the mesozoic era. If the continental margins are included, the fit is even better. Wegener said that continents move around on earths surface and that they were once joined together as a single supercontinent. The continents fit together like pieces of a puzzle. While wegener was alive, scientists did not believe that the continents could move. Continental drift theory zoology for ias, ifos and other. Cut out each of the continents along the edge of the continental shelf the outermost dark line. Create a jigsaw puzzle to represent the supercontinent. The reaction to alfred wegeners theory tells us much about the workings of science. The continental drift hypothesis was developed in the early part of the twentieth century, mostly by alfred wegener. His hypothesis stated that our continents were once part of a single supercontinent. Wegener explained various phenomena of historical geology, geomorphy, paleontology, paleoclimatology, and similar areas in terms of continental drift.
The continents appear to fit together, and not just south america and africa. Wegener put his idea and his evidence together in his book the origin of continents and oceans, first published in. Alfred wegeners fossil evidence for continental drift is shown on the cutouts. Have the students arrange the puzzle pieces using the key to wegeners.
Continental drift theory the theory that the present day position of continents is not permanent but the continents constantly drift and change positions, was first proposed by alfred wegener 1904, 1912, 1924 who from close studies of maps, discovered that coastlines of all continents fitted together like a jigsaw puzzle, suggesting that all. The continental jigsaw puzzle can you reassemble a super. Continental drift was first conceived by scholars and philosophers named francis. As maps grew more accurate the landmasses began appeared as puzzle. With his death, the continental drift theory was quietly swept under the rug. Alfred wegener s fossil evidence for continental drift is shown on the cutouts. Wegeners fossil evidence continental drift continents with fossils on. Alfred wegener proposed the theory of continental drift the idea that the. The main problem with wegener s hypothesis of continental drift was the lack of a mechanism. In 1912, alfred wegener proposed a theory that the continents had once been joined, and over time had drifted apart. Continental drift theory by wegener smooth knowledge. Continental drift puzzle engage with images continental drift.
71 1080 980 455 706 928 1136 17 863 1247 1384 1206 274 1209 256 1174 759 913 50 1467 199 197 543 570 144 97 1203 1034 551 131 1165 38 1327 526 1261 22 170 609 669 1224