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Layers
Earthquakes!
Continental Drift
Plate Tectonics
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100
this layer is made of liquid metal
What is the outer layer?
100
the start of the earthquake underground
What is the focus?
100
the continents were once joined as one big supercontinent
What is the theory of continental drift?
100
two tectonic plates pushing against each other is this type of boundary
What is convergent?
100
New Earth is created in a process called
What is seafloor spreading?
200
this layer is made of magma
What is the mantle?
200
a scientist who studies earthquakes
Who is a seismologist?
200
300 million years ago the supercontinent was called
What is Pangaea?
200
new ocean floor is created at this location
What is the mid-atlantic ridge?
200
mountains are built at this type of plate boundary
What is convergent?
300
this layer is solid metal
What is the inner core?
300
the energy of an earthquake
What are seismic waves?
300
People thought he was CRAZY when he came up with his theory of continental drift
Who is Alfred Wegener?
300
these move at approximately 1-2 inches per year
What are tectonic plates?
300
Two plates pull apart at this type boundary
What is divergent?
400
this layer is made up of basalt
What is oceanic crust?
400
the start of an earthquake above ground
What is the epicenter?
400
the year the theory of continental drift was first presented
What is 1910?
400
these two type of tectonic plates slide past each other
What is a transform boundary?
400
Earth is recycled at this location
What is a subduction zone?
500
the tectonic plates float on this layer
What is the asthenosphere?
500
a transform boundary known for strong earthquakes
What is the San Andreas fault?
500
fossils, landforms, and climate change
What is evidence for supporting the theory of continental drift?
500
oceanic crust is pushed under continental crust and goes into the mantle
What is subduction zone?
500
New Earth is created at this type of boundary
What is divergent?