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Early Earth
Structure of the Earth
Continental Drift Theory
Plate Tectonics
Miscellaneous
100
Earth is approximately this old.
What is 4.55 billion years old?
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
The Earth is divided into these four layers.
What the inner core, the outer core, mantle and crust?
200
The thickest layer of the Earth
What is the mantle.
200
Evidence of matching animal fossils and rock formations were found on these two separate continents _____________________ and _____________________
What is Africa and South America
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
Volcanoes that are not found near plate boundaries are made by these.
What are hotspots
300
Earth got its moon as a result of this occurrence.
What is a collision with Thea?
300
Plates float on top of the _______________________.
What is the asthenosphere or mantle
300
Evidence of tropical plants were found on this continent that is very unexpected.
What is Antarctica
300
These are the three types of convergent boundaries.
What is a Continent-continent collision, continent-oceanic crust collision, and ocean-ocean collision?
300
_________________ are a result from the build up of stress at a plate boundary.
What is earthquakes?
400
When Earth was a Magma Ocean _________matter sunk to the center and ____________ matter rose to the surface.
What is denser matter sunk and lighter matter rose?
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 was broken up into these two landmasses.
What is Laurasia and Gondwanaland?
400
This is the mechanism (what causes) the plates to move
What is convection cycles or convection currents in the mantle
400
These are commonly caused by earthquakes that happen in or near the ocean
What is a Tsunami?
500
This is the first law of Thermodynamics.
What is energy cannot be created or destroyed?
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 or trenches are usually formed)
500
Who was finally able to prove Wegener's Theory of Continental Drift was correct, what did this man find to prove it.
Who is Harry Hess, what was sea floor spreading?