Earth Layers
Boundaries
Continental Drift
Vocabulary
Misc
100
The Earth has this many main layers.
What is 4
100
The two main features created by convergent boundaries
What are mountains and volcanoes (subduction and trenches also work)
100
This was the person who proposed the theory of continental drift.
Who is Alfred Wegener?
100
When two plates move away from each other.
What is divergent boundary?
100
This is the hottest layer of the earth and is solid.
What is the inner core?
200
This is the thickest layer of the Earth
What is the Mantle
200
The mechanism that causes the plates to move
What is convection currents?
200
Continental drift was not accepted because it did not explain this.
What is how the plates moved?
200
When two plates slide past each other
What is transform boundary?
200
Earthquakes and volcanoes are usually located in relation to these
What are plate boundaries?
300
Convection occurs in this layer of the mantle
What is the asthenosphere?
300
Mid-ocean ridge is an example of a ___________ boundary.
What is Divergent
300
These are the two continents that showed the same type of fossils
What is South America and Africa
300
When two plates come together
What is convergent boundary?
300
_________ are the result of a build up of stress at a plate boundary.
What are earthquakes?
400
The rigid part of the earth including the crust and upper mantle (makes up the plates of the earth)
What is the lithosphere?
400
Rift valleys are formed between these two types of crust.
What is continental and continental divergent
400
These are the evidences that Wegener used to prove his theory. (There are 4)
What is same rock types, glacial scratches, same fossil types, and fit like a puzzle
400
When a heat source is applied and causes the a circular movement of mass.
What is convection?
400
This is where new crust is formed.
What are mid-ocean ridges?
500
This geologic evidence shows that the earth has layers of different densities.
What is seismic waves?
500
This type of boundary causes the largest earthquakes
What is continental-continental convergent
500
This is how Wegener died.
What is he froze to death?
500
When atoms break apart and release heat (energy)
What is radioactive decay?
500
Movement of the ocean floor away from mid-ocean ridges
What is sea-floor spreading?
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