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M4 Sci U3 Continental drift B2
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Why is the climate a clue about the existence of pangea in the past?
Wegenar discovered sediments and glacial grooves that matched each other in Africa, South America and India
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List the 3 types of evidence for Continental drift
Climate, fossil, rock
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How were scientists able to make a map of the bottom of the ocean?
They were able to determine the depth of the ocean using a device called an echo-sounder
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What is a fossil?
The preserved remains of a once living thing
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Why are fossils evidence of pangea?
Because oceans separate continents animals can not travel from one continent to another
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What is the name of the super continent that all continents were part of 200 million years ago
Pangea
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What is a glacier?
A slow moving mass of ice
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Which continent could be found directly to the west of Africa in the pangea supercontinent?
South America
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What type of evidence shows that Europe and America were once connected?
Rock clues/ mountain ranges
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What is the Continental drift theory?
The suggestion that all of the continents are in constant motion on the surface of the Earth
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What layer of Earth is beneath the crust?
Mantle
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What is a topographic map
A topographic map is a map that shows the elevation of the features on the surface of the map
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