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