Vocabulary
Plate Tectonics
Continental Drift Theory
Structure of the Earth
Random
100
The theory that all continents are fragments of Pangaea now drifting apart
What is the Continental Drift Theory
100
This is the mechanism (what causes) the plates to move
What is convection cycles in the mantle
100
Evidence of tropical plants were found on this continent
What is Antarctica
100
Plates float on top of the ___________
What is the Asthenosphere
100
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
200
The thinnest layer of the Earth
What is the crust
200
Earthquakes and volcanoes are usually located in relation to these
What is a plate boundary
200
Continental Drift Theory was not accepted because it did not explain this
What is how the continents moved
200
The thickest layer of the Earth
What is the mantle
200
The Himalayan mountains are the result of a _________ boundary.
What is Convergent boundary
300
Although the hottest layer of the Earth, this layer is solid metal
What is the inner core
300
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
Created the Continental Drift Theory
Who is Alfred Wegener
300
The Earth's crust is thinnest under the ______________ and thickest under the __________
What is thinnest under the ocean and thickest under the continents.
300
The San Andreas Fault in California is an example of a ______ boundary.
What is a transform boundary
400
A number of rigid, but moving, pieces of Earth's surface
What is tectonic plates
400
The two types of convergent boundaries
What is Subduction and Collision
400
Pangaea existed this many millions of years ago
What is around 250 million years ago
400
There are ____________ main layers of the Earth.
What is 4
400
__________ are a result from the build up of a stress at a plate boundary.
What is earthquakes
500
States that youngest rocks of ocean floor are at divergent boundaries, moving outward
What is seafloor spreading
500
Name four of the major plates
What is an of the following North American plate, South American plate, Eurasian Plate, Indo-Australia Plate, African Plate, Antarctica Plate
500
Evidence of matching animal fossils from two separate continents ____________ and ______________
What is Africa and South America
500
The rigid part of the Earth including the crust and the upper mantle (makes up the plates of the Earth)
What is the Lithosphere
500
Hot air or liquid is less _____ than cool air or liquid
What is dense