Miscellaneous
Earth's Interior
CDT & SST
Plate Tectonics Theory
100

The thinnest layer of the Earth

Crust

100

There are ______________ main layers of the Earth.

 four (Crust, Mantle, Outer Core, Inner Core)

100

Who Proposed the Continental drift Theory?

Alfred Wegener

100

Earthquakes and Volcanoes are usually located in this area.

Plate boundary

200

A number of rigid, but moving, pieces of Earth's surface

Lithospheric plates.

200

The thickest layer of the Earth

Mantle.

200
The 2 continents which have matching animal fossils.

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

300

The theory that all continents are fragments of Pangaea that are now drifting apart

Continental Drift Theory

300

Plates float on top of the weak layer called_______________________.

Asthenosphere

300

Evidence of tropical plant fossils were found on this continent.

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

400
States that youngest rocks of ocean floor are at divergin boundaries, moving outward
What is seafloor spreading
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
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
500
Although the hottest layer of the Earth, this layer is solid metal
What is the inner core
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)
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