Vocabulary
Structure of the Earth
Continental Drift Theory
Plate Tectonics
Miscellaneous
100

One of earths layers that is made of hard solid rock 

The outer layer ( crust )

100

There are ______________ main layers of the Earth.

 four

100

Created the Continental Drift Theory

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

plates ( tectonic plates ) 

200

the layer that is made up of soft solid rock 

 mantle.

200

Evidence of matching mesosaurus fossils from two separate continents _____________________ and _____________________

Africa and South America

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

Continental Drift Theory

300

Evidence of tropical plants were found on this continent

What is Antarctica

300
Name four of the major plates
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 divergent  boundaries, moving outward

seafloor spreading

400
Pangaea existed this many millions of years ago
What is around 250 million years ago
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

a way in which heat travels, heat moves from areas of higher temperature to areas of lower temperature 

Convection Currents 

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
This person used sonar to map the bottom of the ocean and discovered the mid-ocean ridge in the Atlantic Ocean.
Who is Harry Hess!
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