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

Although the hottest layer of the Earth, this layer is solid metal

What is the Inner Core

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

Continental drift was not accepted as a theory originally but the new theory was called?

What is Plate Tectonics

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
Hot air or liquid is less ________________ than cool air or liquide
What is dense
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

Alfred Wegner and other scientists realized that these two continents could have been connected because of them "matching" and the same fossils found on each continent

Africa and South America

300

What are one of the ways a Volcano can be formed

What is Subduction, Divergent boundaries, or Hot spots

300
_________________ are a result from the build up of stress at a plate boundary.
What is earthquakes
400

When the denser plate slides under another and melts in the mantle. This is called?

What is Subduction

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

All continental plates were at one point connected this landform was called?

Pangea

400

This is the mechanism (what causes) the plates to move

What is convection currents in the mantle

400
The San Andreas Fault in California is an example of a ____________________ boundary.
What is a transform boundary
500

A force that pushes rocks in opposite directions, causing them to twist or slide past each other

What is Shearing

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 is the biggest trench caused by subduction in the ocean 

What is the Marianna Trench

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