What does the theory of plate tectonics explain?
Earth Science Flashcard

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Science
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8th Grade
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Hard
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1.
FLASHCARD QUESTION
Front
Back
The theory of plate tectonics explains how the Earth's lithosphere is divided into tectonic plates that move over the asthenosphere, leading to geological phenomena such as earthquakes, volcanic activity, and the formation of mountains.
2.
FLASHCARD QUESTION
Front
What are convergent plate boundaries?
Back
Convergent plate boundaries are areas where two tectonic plates move towards each other, often resulting in the formation of mountains, ocean trenches, and volcanic activity.
3.
FLASHCARD QUESTION
Front
What is the hydrosphere?
Back
The hydrosphere includes all of Earth's water in the form of oceans, glaciers, lakes, rivers, and groundwater.
4.
FLASHCARD QUESTION
Front
What is a fault in geology?
Back
A fault is a fracture or zone of fractures between two blocks of rock, which can cause earthquakes when the blocks move.
5.
FLASHCARD QUESTION
Front
What is the difference between a ridge and a rift valley?
Back
A ridge is formed at divergent plate boundaries where tectonic plates move apart, while a rift valley is a lowland region formed by the sinking of the Earth's crust between two faults.
6.
FLASHCARD QUESTION
Front
What is seismic activity?
Back
Seismic activity refers to the frequency and intensity of earthquakes and other ground-shaking phenomena caused by the movement of tectonic plates.
7.
FLASHCARD QUESTION
Front
What is the significance of ocean trenches?
Back
Ocean trenches are deep, narrow depressions in the ocean floor formed at convergent plate boundaries, where one plate is subducted beneath another.
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