Vocabulary
Structure of the Earth
Continental Drift Theory
Plate Tectonics
Miscellaneous
100
The thinnest 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 matching _____________________  from two separate continents to prove continental drift theory

What is animal 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 theory that all continents are fragments of Pangaea now drifting apart
What is the Continental Drift Theory
300
Plates float on top of the _______________________.
What is the asthenosphere
300

Evidence of tropical plants were found on this continent

What is Antarctica

300

Name one 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 rubbing  of _________________ plate boundary.

What is earthquakes/faults; transform

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
400

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!

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)
500

What type of boundary created the Andes Mountains


What is convergent boundary

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