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

Came up with 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 animal fossils from two separate continents provides evidence to _____________________ 

Continental Drift Theory

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
200

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

What is dense

300

The theory that all continents were once a supercontinent Pangaea that slowly began drifting apart

What is the Continental Drift Theory

300

Lithospheric plates float on top of the _______________________.

What is the asthenosphere

300

The thinnest layer of the earth

What is the crust

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 geological feature that results from two plate boundaries sliding and bumping past each other

What are earthquakes

400

States that the youngest rocks of the ocean floor are at divergent 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 300 million years ago

400

DAILY DOUBLE!!

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

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 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

Temperature, pressure and density __________ as you ASCEND through the layers of the earth

What is decrease

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