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Woodall Earth Environmental Science - Plate Tectonics
Terms in this set (20)
The study of the record of the Earth's magnetic polarity
Wegener's hypothesized that all continents were one day connected in a supercontinent (one landmass)
Theory of Plate Tectonics
A theory that states Earth's solid crust & upper mantle are broken into plates that move
Heated magma rises, slowly sinks, and is reheated forming a current
Uplifted oceanic ridge pushes an oceanic plate toward a subduction zone
The weight of a sinking plate pulls it into the subduction zone/mantle
An older, denser tectonic plate sinks beneath a younger, lighter plate
Convergent Boundary ➡️⬅️
Places where 2 tectonic plate are moving toward each other/colliding. Causes Mountains to form.
Divergent Boundary ↔️
Places where 2 tectonic plates are moving away from each other/spreading apart. Cause large cracks in the ground over time.
Transform Boundary ♒
Places where plates slide past each other horizontally. (Like that emoji)
Deep (Ocean) Sea Trench
Deep sea feature found along the ocean at subduction zones.
Uplifted crust along a rift on the seafloor at divergent boundaries (↔️)
long, narrow depression that forms when continental crust begins to separate at a divergent boundaries ↔️
Feature on Earth's surface that develops on the top plate of a subduction zone as magma is forced upward.
C- Convergent Boundary (➡️⬅️)
O- Ocean Ridge
S- Subduction or Slab Pull
T- Trench (all that leads to this)
Crust located in the ocean (more dense than continental crust)
The part if the Crust that we walk on (less dense than oceanic crust)
How long ago did Earth form?
4.5-4.6 billion years ago
What is Continental Crust made of?
How much do the Continents move each year?
2 cm and have been moving for 1.5 million years
THIS SET IS OFTEN IN FOLDERS WITH...
Earth and Environmental Science - Water
Earth Science - Plate Tectonics
Earth Environmental Science Exam
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