Show:
Structure of Caellum
Vocabulary
Continental Drift Theory
Plate Tectonics
Miscellaneous
100

main part


DAILY DOUBLE TO NAME THEM!

Awesome

100
The thinnest layer of the Earth, like a peel on an apple.
What is the crust
100
He proposed the Continental Drift Theory
Who is Alfred Wegener
100
Earthquakes and Volcanoes are most frequently located NEAR these
What are... plate boundaries
100
The Himalayan mountains are the result of a ___________________________ boundary.
What is convergent boundary
200

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200
A number of rigid, but moving, pieces of Earth's surface
What is tectonic plates.
200

Matching animal fossil evidence from two separate continents, Africa and __________________, supports the theory of continental drift.

What is South America
200
The mid-ocean ridge is an example of a divergent boundary and ___________________ occurs here where new ocean floor is formed.
What is sea-floor spreading
200
Hot air or hot liquid is less ________________ than cool air or cool liquid.
What is....    dense
300

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300
The theory that all continents are fragments of Pangaea now drifting apart.
What is the Continental Drift Theory
300
Evidence of tropical plants were found on this present day frozen continent
What is Antarctica
300
Name four of the major plates ...

(upon which continents are located)

What is any of the following: North American plate, South American plate, Eurasian Plate, Indo-Australian plate, African plate, Antarctica plate. 
300
_________________ are a result from the build up of stress at a plate boundary.
What are earthquakes
400

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400
The process that causes the youngest rocks of the sea floor to be located at diverging boundaries, causing the ocean floor to get bigger.
What is seafloor spreading
400
This supercontinent, in which all modern day continents were joined together, existed 250 million years ago.
What is Pangea
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

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500
Although the hottest layer of the Earth, this layer is solid metal
What is the inner core
500
Continental Drift Theory was not accepted because it did not explain this
... HOW the continents moved
500
Two types of convergent boundaries. 

(where plates come together)

What is subduction (where volcanoes often occur) and collision (where mountains are usually formed)
500
Harry Hess used ________ to map the bottom of the ocean and discovered the mid-ocean ridge in the Atlantic Ocean.
What is ...sonar