Earth's Layers
Plate Boundaries
Plate Tectonics
Vocabulary
Miscellaneous
100
Top layer of Earth, the one we live on.
What is the crust?
100
Boundary where two plates are moving towards each other.
What is a Convergent boundary?
100
Created the Continental Drift theory.
Who is Alfred Wegener?
100
Fracture between two blocks of rock.
What is a fault?
100
The more dense type of crust.
What is oceanic crust?
200
Mostly solid rock layer of Earth, largest layer.
What is the Mantle?
200
Boundary where two plates are moving from each other. 
What is a Divergent boundary?
200
Amount of major tectonic plates.
What is 8?
200
When new crust is formed at a mid-oceanic ridge.
What is sea-floor spreading?
200
Type of convergent boundary that forms mountains.
What is continental/continental?
300
Liquid layer of Earth, made of iron and nickel.
What is the outer core?
300
Boundary where plates slide past each other.
What is a Transform boundary?
300
All of Earth's continents as one, a supercontinent.
What is Pangea?
300
When enough friction builds on a transform boundary, that it can be released as shaking of the ground.
What is an Earthquake?
300
A major volcanic zone which is found along the Pacific ocean and travels all the way from South America to North America and along Asia.
What is the Pacific Ring of Fire?
400
Solid layer of Earth, innermost layer.
What is the inner core?
400
When a plate slips under another, sometimes forming volcanoes.
What is a subduction zone?
400
Vast, underwater mountain ranges.
What are Deep-sea trenches?
400
When lava spews out of a volcano also has dangerous gases.
What is a volcanic eruption?
400
The transfer of thermal energy by the circulation or movement of a gas or liquid.
What are convection currents?
500
Consist of the crust and the upper mantle.
What is the lithosphere?
500
Where new crust is formed.
What is a mid-oceanic ridge?
500
Theory that explains the structure of earths crust.
What are plate tectonics?
500
Molten rock inside the earth.
What is Magma?
500
Is the layer of the upper mantle composed of low-density rock.
What is the asthenosophere?