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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
Rigid, but moving, pieces of Earth's surface
What are tectonic plates?
200
The thickest layer of the Earth
What is the mantle?
200
Evidence of matching animal fossils was found on these two separate continents
What is Africa and South America?
200
The mid-ocean ridge is on this type of plate boundary
What is divergent boundary?
200
Hot air or liquid is less ________________ than cool air or liquid
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
DAILY DOUBLE Name the plate we live on
What is the Pacific Plate?
300
_________________ are a result from the build up of stress at a plate boundary.
What are earthquakes?
400
States that the ocean floor is younger at diverging boundaries, and gets older as you move outward
What is seafloor spreading?
400
DAILY DOUBLE 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
The reason Continental Drift Theory was not widely accepted at first
What is could not explain how the continents moved?
400
This is the mechanism that causes the plates to move
What is convection cycles in the mantle?
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 _____________________.
What is under the oceans?
500
Pangaea existed this many millions of years ago
What is around 250 million years?
500
The two types of convergent boundaries
What is subduction (where volcanoes often occur) and collision (where mountains are usually formed)?
500
What job was being completed when Sea Floor Spreading was discovered
What is mapping the ocean floors?