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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

The name of the fossils found in both South America and Africa.

What is "Mesosaurus"?

100

The area where 2 tectonic plates meet.

What is a plate boundary?

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

A mid-ocean ridge occurs at a __________ boundary.

What is divergent?

200

The place where 2 plates come together and one denser plate sinks below the other.

What is "subduction zone"?

200

Hot air or liquid is less ________________ than cool air or liquid.

What is "dense"?

300

This is always found near subduction zones.

What are volcanoes?

300
Plates float on top of the _______________________.
What is the asthenosphere
300

An area where 2 plates are colliding into each other.

What is a convergent boundary?

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 divergin boundaries, moving outward
What is seafloor spreading
400

Convection currents occur in this layer of the Earth.

What is the Mantle?

400

This is created at a mid-ocean ridge (divergent boundary).

What is "new seafloor"?

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 densest under the _____________________ and less dense under the _____________________.

What is "under the ocean" and "under the continents".

500
Continental Drift Theory was not accepted because it did not explain this
What is how the continents moved
500

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

500

Where Earth's plates slide past each other.

What is a "transform boundary"?