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Flashcards on Plate tectonics
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What are tectonic plates?
Large pieces of the Earth's lithosphere that fit together like a jigsaw puzzle.
What is the theory of plate tectonics?
The theory that Earth's lithosphere is divided into tectonic plates that move and interact with each other.
What are the three types of plate boundaries?
Convergent, divergent, and transform boundaries.
What happens at a convergent plate boundary?
Two plates collide, causing subduction, mountain formation, or volcanic activity.
What happens at a divergent plate boundary?
Two plates move apart, creating new crust and volcanic activity.
What happens at a transform plate boundary?
Two plates slide past each other horizontally, causing earthquakes.
What is subduction?
The process where one tectonic plate sinks beneath another plate.
What is a fault?
A fracture or break in the Earth's crust along which movement occurs.
What is a hotspot?
An area of volcanic activity that is not directly associated with a plate boundary.
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 seafloor spreading?
The process by which new oceanic lithosphere is formed through volcanic activity at divergent plate boundaries.
What is continental drift?
The hypothesis that the continents were once joined together in a single landmass and have since moved apart.
What is the main driving force behind plate tectonics?
The convection currents in the Earth's mantle.
What evidence supports the theory of plate tectonics?
Fossil records, rock formations, and the matching of coastlines.
What famous supercontinent existed over 300 million years ago and eventually broke apart?
Pangaea.
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Test Your Knowledge
What is the theory of plate tectonics?
The theory that the Earth is flat.
The theory that Earth's lithosphere is divided into tectonic plates that move and interact with each other.
The theory that Earth's core is made of cheese.
The theory that Earth is the center of the universe.
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What are tectonic plates?
The building blocks of the Earth's crust.
Large pieces of the Earth's lithosphere that fit together like a jigsaw puzzle.
Small fragments of volcanic rocks.
Microscopic organisms living in the oceans.
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What happens at a divergent plate boundary?
Two plates move apart, creating new crust and volcanic activity.
Two plates collide, causing subduction, mountain formation, or volcanic activity.
Two plates slide past each other horizontally, causing earthquakes.
Two plates merge or come together.
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What is subduction?
The process of one plate sliding under another.
The process where one tectonic plate sinks beneath another plate.
The process of one plate moving alongside another.
The process of one plate pushing against another.
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What evidence supports the theory of plate tectonics?
The discovery of new dinosaur fossils.
Fossil records, rock formations, and the matching of coastlines.
The occurrence of meteor showers.
The presence of underground rivers.
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What happens at a transform plate boundary?
Two plates move apart, creating new crust and volcanic activity.
Two plates collide, causing subduction, mountain formation, or volcanic activity.
Two plates slide past each other horizontally, causing earthquakes.
Two plates merge or come together.
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What is a hotspot?
An area of volcanic activity that is not directly associated with a plate boundary.
An area of cold water in the ocean.
A section of the Earth's crust that doesn't move.
A location with high levels of pollution.
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What is the main driving force behind plate tectonics?
The rotation of the Earth.
The gravitational pull of the Moon.
The convection currents in the Earth's mantle.
The impact of meteorites on the Earth's surface.
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What is seafloor spreading?
The process of ocean water evaporating.
The process of ice caps melting.
The process by which new oceanic lithosphere is formed through volcanic activity at divergent plate boundaries.
The process of rivers emptying into the ocean.
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What is the Ring of Fire?
A popular amusement park.
A major area in the basin of the Pacific Ocean where a large number of earthquakes and volcanic eruptions occur.
A group of islands in the Caribbean.
A ring-shaped coral reef.
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