Earth's Layers
This layer is the outermost layer of the Earth
Crust (Continental or Oceanic)
What is the name of the super continent that all of our continents separated from?
Pangea
These types of waves move in an up and down pattern
S-Waves (or
This is created between parts of the continental crust when the plates are moving away from each other
Rift Valley
This type of plate boundary moves plates away from each other
This layer is the innermost layer of the Earth
Core (or Inner Core)
What is the theory called that describes how the continents moved apart after being one large land mass?
Continental Drift
These types of waves move in a "pushing together" pattern
P-waves (or Compression Waves)
This is created between parts of the oceanic crust when the plates underneath are moving apart
Mid-ocean Ridge
This type of plate boundary involves plates moving toward each other
Convergent
This layer is found in the middle of the three big layers
Mantle
What is the theory called that describes something underneath the crust moving around, which causes the crust and continents to move
Plate Tectonics
These waves get refracted when the density of the layers change
P-waves
This is created when plates move toward one another and continental crust pushes together upward
Mountains
This type of plate boundary involves plates moving beside each other, scraping sides and moving in different directions
Transform
This layer is found under the crust and is made up of the tectonic plates
Lithosphere
This is the theory that continental drift and plate tectonics cause the sea floor to change shape and form mid-ocean ridges
Seafloor Spreading
These waves cannot pass through liquid
S-waves
This is created when continental and/or oceanic crust is pushed together over a hot spot
Volcanoes
What is it called when the crust of one plate gets pushed underneath the crust of another plate?
Subduction
This layer is found between the crust and the mantle where the plates "float"
Asthenosphere
This scientist created the theory of Continental Drift and Pangea
Wegener
What do we call the region where seismic waves are absent or obstructed
Shadow Zone
What is happening in the mantle that causes the plates to shift?
Convection Currents
What happens to the crust when transform boundaries move?
Nothing; it is neither created nor destroyed