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Flashcards on Plate Tectonics
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What are tectonic plates?
Large pieces of Earth's lithosphere that fit together like a puzzle.
What are the three types of plate boundaries?
Convergent, divergent, and transform boundaries.
What happens at a convergent plate boundary?
Two plates collide, forming mountains, volcanoes, or trenches.
What happens at a divergent plate boundary?
Two plates move apart, creating new crust and causing seafloor spreading.
What happens at a transform plate boundary?
Two plates slide past each other horizontally, causing earthquakes.
What is a subduction zone?
An area where one plate is forced beneath another into the mantle.
What is the Ring of Fire?
A major area in the basin of the Pacific Ocean where a large number of earthquakes and volcanic eruptions occur.
What is continental drift?
The theory that continents were once joined together and have slowly moved apart over millions of years.
What is the theory of plate tectonics?
The theory that Earth's lithosphere is divided into plates that move and interact with each other.
What is the Earth's outermost layer called?
The crust.
What is the layer beneath the crust called?
The mantle.
What is the theory that explains how new crust is formed?
The theory of seafloor spreading.
What are some major tectonic plates?
Eurasian Plate, African Plate, North American Plate, Pacific Plate.
What is a hotspot?
An area of volcanic activity that is stationary while the tectonic plate moves above it, creating a chain of volcanic islands.
What is the largest tectonic plate?
The Pacific Plate.
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Test Your Knowledge
What are tectonic plates?
Large pieces of Earth's lithosphere that fit together like a puzzle.
Small rocks that float on water.
Layers of the atmosphere.
Sections of the Earth's core.
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What causes earthquakes at transform plate boundaries?
Tectonic plates sliding past each other horizontally.
Tectonic plates colliding and pushing against each other.
Tectonic plates moving apart and creating new crust.
The movement of the Earth's core.
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What is the theory that explains the movement of tectonic plates?
The theory of plate tectonics.
The theory of continental drift.
The theory of seafloor spreading.
The theory of Earth's mantle.
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What happens at a convergent plate boundary?
Two plates collide, forming mountains, volcanoes, or trenches.
Two plates move apart, creating new crust.
Two plates slide past each other horizontally.
Two plates sink beneath each other into the mantle.
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What is the Earth's outermost layer called?
The crust.
The mantle.
The core.
The lithosphere.
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What is the layer beneath the crust called?
The mantle.
The crust.
The core.
The asthenosphere.
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What are some major tectonic plates?
Eurasian Plate, African Plate, North American Plate, Pacific Plate.
South American Plate, Antarctic Plate, Australian Plate, Indian Plate.
Arabian Plate, Caribbean Plate, Philippine Sea Plate, Scotia Plate.
Nazca Plate, Cocos Plate, Juan de Fuca Plate, Arabian Plate.
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What is the theory that explains how new crust is formed?
The theory of seafloor spreading.
The theory of plate tectonics.
The theory of continental drift.
The theory of subduction zones.
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What is a subduction zone?
An area where one plate is forced beneath another into the mantle.
An area where two plates move apart, creating new crust.
An area where two plates slide past each other horizontally.
An area where two plates collide, forming mountains or volcanoes.
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What is the largest tectonic plate?
The Pacific Plate.
The African Plate.
The Eurasian Plate.
The North American Plate.
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