Earth's Layers
This is the outside layer of the Earth. It's made of rock.
What is the crust?
This two-word phrase is the name of the theory that Earth's crust is broken into plates that are floating on a layer of magma.
What is plate tectonics?
This the type of plate boundary where the plates are moving toward each other.
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What is convergent?
These are the waves that are released when plates that have been stuck break free. They cause earthquakes.
This is the kind of volcano that is erupting right now.
What is alive?
This is the layer of the Earth just underneath the crust. It's made of magma.
What is the mantle?
This two-word phrase is the name of the theory that say's Earth's continents are moving away from each other.
What is continental drift?
This the type of plate boundary where the plates are moving away from each other.
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What is divergent?
These are caused by underwater earthquakes.
What are tsunamis?
This is the name of a volcano that erupted recently or seems like it may erupt soon.
What is active?
This is the layer of the earth underneath the mantle. It's made of molten metals.
What is the outer core?
This is the name of the big supercontinent that Alfred Wegener thought all of the continents used to be a part of.
What is Pangaea?
This is the type of boundary where the plates are moving alongside each other.
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What is transform?
These are the plate boundaries that cause the biggest earthquakes.
What are transform boundaries?
This is the kind of volcano that has not erupted recently and does not seem like it will erupt soon.
What is dormant?
What is the inner core?
These are the places where Earth's tectonic plates meet each other.
What are plate boundaries?
What is subduction?
This is the word for the size and strength of an earthquake.
What is magnitude?
This is the kind of volcano that has no chance of erupting again.
What is extinct?
This is the reason that the inner core of the Earth is solid even though it is as hot as the sun.
What is pressure?
These are things that are caused by convergent boundaries.
What are mountains?
These are cracks in Earth crusts that rocks move along that are caused by stress from plate boundaries.
What are faults?
This is a smaller earthquake that comes after the main earthquake.
What is an aftershock?
This is the shape of volcano that has the most destructive eruptions?
What is composite?