EARTH SCIENCE
TECTONICS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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This evidence shows that the two continents have similar landforms
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This evidence shows that the mountains contain fossil evidence
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This evidence show that sea-floor spreading occurs, and magnetic reversal patterns exist on the sea floor
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This evidence show that they were once a single mountain range when the continents were connected and were later separated as the continents drifted apart.
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Detailed explanation-1: -The Atlas Mountains in Africa are part of the same mountain chain as the Appalachian Mountains in North America, indicating that they were once connected. How does this evidence relate to the theory of plate tectonics? This evidence shows that the two continents have similar landforms.
Detailed explanation-2: -How did the Appalachian Mountains in North America and the Atlas Mountains in North Africa provide evidence for Pangea? Both ranges had similar types, ages, and sequences of rock layers, suggesting that they were formed together and then separated.
Detailed explanation-3: -Scientists have found fossils of similar types of plants and animals in rocks of similar age. These rocks were on the shores of different continents. This suggests that the continents were once joined. For example, fossils of Mesosaurus, a freshwater reptile, have been found both in Brazil and western Africa.
Detailed explanation-4: -The Appalachians of the eastern United States and Canada, for example, are just like mountain ranges in eastern Greenland, Ireland, Great Britain, and Norway. Wegener concluded that they formed as a single mountain range that was separated as the continents drifted.
Detailed explanation-5: -The theory of continental drift is most associated with the scientist Alfred Wegener. In the early 20th century, Wegener published a paper explaining his theory that the continental landmasses were “drifting” across the Earth, sometimes plowing through oceans and into each other.