Flashcard: Plate Tectonics
Flashcard
•
Science
•
8th Grade
•
Practice Problem
•
Hard
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1.
FLASHCARD QUESTION
Front
What is plate tectonics?
Back
Plate tectonics is the scientific theory that describes the large-scale movement of Earth's lithosphere, which is divided into tectonic plates that float on the semi-fluid asthenosphere.
2.
FLASHCARD QUESTION
Front
What causes ocean basin formation?
Back
Ocean basins are formed primarily through seafloor spreading at divergent boundaries, where tectonic plates move apart and new crust is created.
3.
FLASHCARD QUESTION
Front
What are divergent boundaries?
Back
Divergent boundaries are regions where two tectonic plates move away from each other, leading to the formation of new crust, often seen at mid-ocean ridges.
4.
FLASHCARD QUESTION
Front
What are convergent boundaries?
Back
Convergent boundaries are areas where two tectonic plates collide, which can lead to the formation of mountains, deep ocean trenches, and volcanic activity.
5.
FLASHCARD QUESTION
Front
What is a transform boundary?
Back
A transform boundary is a type of fault where two tectonic plates slide past one another horizontally, causing earthquakes.
6.
FLASHCARD QUESTION
Front
What is seafloor spreading?
Back
Seafloor spreading is the process by which new oceanic crust is created at mid-ocean ridges as tectonic plates pull apart.
7.
FLASHCARD QUESTION
Front
What are oceanic trenches?
Back
Oceanic trenches are deep, narrow depressions in the ocean floor formed at convergent boundaries where one tectonic plate is subducted beneath another.
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