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?



What are tectonic plates?



What happens at a divergent plate boundary?



What is subduction?



What evidence supports the theory of plate tectonics?



What happens at a transform plate boundary?



What is a hotspot?



What is the main driving force behind plate tectonics?



What is seafloor spreading?



What is the Ring of Fire?




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