Show:
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 where these are

What is at plate boundaries

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 animal fossils from two separate continents _____________________ and _____________________

What is Africa and South America

200

Iceland was formed because of this plate boundary.

What is a 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 cold and barren 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 of energy release at a plate boundary.

What is earthquakes

400

When an oceanic plate moves toward and under a continental plate.

What is subduction.

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 Earth formation existed around 250 million years ago

400

This is the mechanism (what causes) the plates to move

What is convection currents or cycles in the mantle

400
The San Andreas Fault in California is an example of a ____________________ boundary.
What is a transform boundary
500

The hottest layer of the Earth.

What is the inner core

500

The type of plate that is thinner and more dense.

What is oceanic plate.

500

Wegener's 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 Canadian discovered how tectonic plates move.


Who is John Tuzo Wilson.