Earth's Layers
Plate Tectonics
Tectonic Plate Boundaries
Crust or No Crust
Misc.
100
What are Earth’s layers from densest to least dense?
Inner core, outer core, mantle, crust
100
These are slabs of rock (lithosphere) that move around on the mantle
What is a tectonic plate
100
Continental - continental collisions cause this to form.
What is a mountain range.
100
Transform boundaries
Crust neither created or destroyed
100
16. A dense cloud of super-hot gases and rock fragments that races downhill from an eruption volcano is called a
What is a pyroclastic flow
200
What makes up the lithosphere?
Crust and upper mantle
200
Ice scars on South Africa, and tropical fossils on Greenland provide evidence of this and support this theory.
What is continental drift, the Theory of Plate Tectonics.
200
Two plates scrape past each other at this type of boundary.
What is a transform boundary.
200
divergent boundaries
What is crust created
200
17. What determines if subduction will occur at a convergent boundary
What is density
300
What makes up the athenosphere?
mid-lower mantle
300
Convection currents in this part of Earth cause the tectonic plates to move.
What is the athenosphere.
300
Subduction occurs when one plate does what to another plate.
What is sinks it.
300
Convergent boundaries
What is crust destroyed.
300
The “Ring of Fire” is a geographic area where
Lots of geologic activity occurs bc of plate boundaries
400
The thin, rigid layer that forms the outermost part of the lithosphere is called Earth’s
Crust
400
Hot spots can be used to track this.
What is plate movement.
400
One way a folded mountain can form is.
When two contiential plates collide.
400
Sea floor spreading (mid-ocean ridges)
What is crust created
400
What happened in Alaska (from your computer lab assignment)
What is an earthquake
500
mid - lower Mantle
Convection currents occur in this layer
500
Most major geologic events occur along these.
What is plate boundaries.
500
Mid-ocean ridges form at what type of plate boundary?
What is a divergent boundary.
500
Deep sea trenches (oceanic -oceanic subduction)
What is crust destroyed.
500
Mt St. Helen's is an example of what?
What is a volcano.
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