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Wegener Continental Drift Theory Flashcards | StudBud
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Wegener Continental Drift Theory
Wegener Continental Drift Theory
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An #8thGrade #Review of #ContinentalDrift
Flashcards
11 cards
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Questions
11
Answers
1
Which one of these is
NOT
evidence of continental drift?
Mountain Ranges
Magma solidifying
Seafloor structures
Climate
2
At first, most people didn't accept Wegener's theory. Why is that?
He couldn't prove glaciers existed
He didn't know how or why the tectonic plates moved
He didn't know how islands were formed.
He couldn't prove any of it
3
Evidence of matching rock types that are the same age have been found on how many continents?
5
3
6
10
4
Which mountain ranges line up when Pangaea is assembled?
Caledonia mountains and the Appalachians
Rocky mountains and the Himalayas
Caledonia mountains and the Alps
Appalachians and the Himalayas
5
What other continental drift evidence goes well together?
Convection currents in mantle and seafloor structures
Mountain ranges and glaciers
Continental shapes and fossils
Climate and glacier markings
6
What seafloor structure gives us the most proof of magnetic polarity reversal?
Mid-Atlantic Ridge
Subduction zones
Mid-Pacific Ridge
Mid-Indian Trenches
7
Which of these is a strong piece of evidence for fossils?
Fossil records line up when Pangaea is assembled
Climate, Glaciers, and Continental shapes
Freshwater reptile fossils found on S.America and Africa
Tropical plant fossils being found in Antartica
8
Describe convection currents in the mantle.
Hot magma rises, cool magma sinks, dragging the plates w/ it
Earth's magnetism switches
Cool magma rises, hot magma sinks, dragging the plates w/ it
The continents fit together when they're in Pangaea
9
What is NOT true about glacial evidence?
There are still glaciers in the deserts today
Grooves carved by glaciers have been found on India
Grooves carved by glaciers have been found on Africa
Grooves carved by glaciers have been found on Australia
10
What continental drift evidence goes well together?
Continental shapes and magnetic polarity reversal
Rock types and mountain ranges
Seafloor structures and glaciers
Fossils and convection currents in the mantle
11
Convection currents in the mantle can lead to...
Freshwater reptiles swimming across the ocean
Glaciers carving out craters
Mountain ranges matching up on different sides of the globe
Seafloor structures like trenches and the Mid-Atlantic Ridge
