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Vocabulary
Structure of the Earth
Continental Drift Theory
Plate Tectonics
Miscellaneous
100
The thinnest layer of the Earth
What is the crust
100

There are ______________ main layers of the Earth. (Include both cores)

What is four

100
Created the Continental Drift Theory
Who is Alfred Wegener
100
Earthquakes and Volcanoes are usually located in relation to these
What is a plate boundary
100

The Himalayan mountains are the result of a ___________________________ boundary.

What is convergent boundary

200
A number of rigid, but moving, pieces of Earth's surface
What is tectonic plates.
200
The thickest layer of the Earth
What is the mantle.
200

Alfred Wegener theorized a supercontinent called

Pangea

200
The mid-ocean ridge is an example of a ____________________ boundary and ___________________ occurs here where new ocean floor is formed.
What is divergent boundary; sea-floor spreading
200

Heat in the mantle _______________

What is rises

300
The theory that all continents are fragments of Pangaea now drifting apart
What is the Continental Drift Theory
300
Plates float on top of the _______________________.
What is the asthenosphere
300

Trenches are found at this plate boundary

convergent 

300

Name a plate 

What is any of the following North American plate, South American plate, Eurasian Plate, Indoaustralia plate, African plate, Antarctica plate

300
_________________ are a result from the build up of stress at a plate boundary.
What is earthquakes
400
States that youngest rocks of ocean floor are at divergin boundaries, moving outward
What is seafloor spreading
400
The rigid part of the Earth including the crust and the upper mantle (makes up the plates of the Earth)
What is the lithosphere
400
Rift Valleys are found at

Divergent Boundaries 

400
This is the mechanism (what causes) the plates to move
What is convection cycles in the mantle
400
The San Andreas Fault in California is an example of a ____________________ boundary.
What is a transform boundary
500
Although the hottest layer of the Earth, this layer is solid metal
What is the inner core
500

The Earth's crust is thinnest under the _____________________ and thickest under the _____________________.

What is thinnest under the ocean and thickest under the continents.

500
Continental Drift Theory was not accepted because it did not explain this
What is how the continents moved
500
The two types of convergent boundaries
What is subduction (where volcanoes often occur) and collision (where mountains are usually formed)
500
What can be used as evidence for Pangea? 

Fossil evidence

Matching rock formation 

Puzzle Pieces