Vocabulary
Structure of the Earth
Continental Drift Theory
Plate Tectonics
Miscellaneous
100
The thinnest layer of the Earth
What is the crust
100

The thickest layer of the Earth

What is the mantle. 
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

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

What is continental drift. 
200

The rigid part of the Earth including the crust and the upper mantle (makes up the plates of the Earth)

What is the lithosphere
200

Continental Drift Theory was not accepted because it did not explain this

What is the mechanism that caused the continents to move (convection).
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 liquide
What is dense
300

Although the hottest layer of the Earth, this layer is solid metal due to the pressure of all the other layers 

What is the inner core.
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 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
State in order (out to in) the  layers of the Earth an S wave will be able to go through 
What is crust, mantle (stops at outer core because it is a liquid).
400
Pangaea existed this many millions of years ago
What is around 250 million years ago
400
Describe two LANDFORMS that occur of a divergent boundary


DOUBLES: List geographic example of each

What is mid-ocean ridge and rift valley. 


DOUBLES: Mid Atlantic Ridge & East African Rift Valley

400

This person used sonar to map the bottom of the ocean and discovered the mid-ocean ridge in the Atlantic Ocean.

What is Harry Hess. 
500
What provides evidence for seafloor spreading? 
What is paleomagnitism and age of sea floor age. 
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
List 4 pieces of evidence for continental drift
What is puzzle fit, fossil evidence, rock evidence and paleoclimate evidence.
500

Describe three LANDFORMS that occur of a convergent boundary

DOUBLES: List geographic example of each

What is trench, volcanic (island) arcs, mountains


DOUBLES: Mariana Trench, Him/Appalachain, Aleutian Island Arcs/Mt St Helens/Andes Mts

500

The Aleutian Island arc is an example of a _____ (describe the boundary and the crusts involved) 

Convergent boundary ocean-ocean crust collision. 
M
e
n
u