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

The outside layer of the Earth

What is the crust

100
There are ______________ main layers of the Earth.
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

Evidence of Pangea includes what that can be found in rocks

What is fossils

200

The mid-ocean ridge is an example of a ____________________ boundary

What is divergent boundary

200
Hot air or liquid is less ________________ than cool air or liquide
What is dense
300

The name of the super continent when all the continents were together

What is Pangea

300

Plates float on top of _______________________.

What is magma

300

Besides fossils, scientists use ______ as evidence of Pangea

What is rocks

300
The three plate movements

What is converging, diverging, and transforming

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

The matter made when plate diverge

What is land

400

The two types of plates

What is continental and oceanic

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

The layer of the Earth that is hotter and contains magma

What is the mantle

500

The plate that is denser

What is oceanic

500

Continental Drift Theory was not accepted because it lacked what until the next scientist came around

What is evidence

500

The two types of convergent boundaries

What is subduction (where volcanoes often occur) and uplift (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 thus creating the evidence for Continental Drift Theory

Who is Harry Hess!