Earth's Structure
Earth's Structure/Plate Tectonics
Plate Tectonics
Plate Tectonics 2
Volcanoes and Earthquakes
100
This layer of Earth is an extremely hot solid made of iron and nickel.
What is the inner core?
100
This is the only entirely liquid layer of the Earth.
What is the outer core?
100
This scientist developed the theory of continental drift.
Who is Alfred Wegener?
100
This process adds more crust to the sea floor.
What is sea floor spreading?
100
Earthquakes most often occur along this type of plate boundary.
What is a transform plate boundary?
200
This layer of the Earth is hard, rigid, and is the thinnest layer by far.
What is the crust?
200
If the Earth were and apple, the skin would be this layer.
What is the crust?
200
This was the strongest piece of evidence available in Wegener's day for the theory of continental drift.
What is similar fossils being found on different continents?
200
In this type of plate boundary, plates spread apart.
What is a divergent plate boundary?
200
This is the point on the surface directly above an earthquake's origin.
What is the epicenter?
300
This layer includes the crust and upper mantle and is broken into pieces.
What is the lithosphere?
300
This part of the Earth makes up the tectonic plates.
What is lithosphere?
300
This force powers the movement of the plates according to the theory of Plate Tectonics.
What is convection?
300
These two types of landforms can occur at convergent plate boundaries.
What are (any combination of mountains, volcanoes, and trenches)?
300
These are the two types of seismic waves created in an earthquake in the order in which they arrive.
What are p-waves (primary waves) and s-waves (secondary waves).
400
This is the layer of hot semisolid rock below the crust.
What is the mantle?
400
This is when one plate slides underneath another at a convergent plate boundary.
What is subduction?
400
This is the name of Earth's last super-continent.
What is Pangaea?
400
This is the type of plate boundary where plates slide past one another.
What is a transform boundary?
400
Low silica magma will cause this type of eruption in a volcano.
What is an effusive (quiet) eruption?
500
Beneath the lithosphere, this is the layer of hot, malleable, semiliquid.
What is the asthenosphere?
500
This forms when continental plates diverge.
What is a rift valley?
500
This was when Wegener's theory was accepted.
What is 30 years after he died?
500
This landform occurs when oceanic plates spread apart.
What is a mid-ocean ridge?
500
This is the area around the Pacific Plate where the majority of earthquakes and volcanic activity occur.
What is the Ring of Fire?
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