Show:
Earth's Structure
Continental Drift Theory
Tectonic Plates
Boundaries - pt 1
Boundaries - pt 2
100
The outermost layer of the earth.
What is the crust.
100
Alfred Wegener was the first to suggest this.
What is continental drift and plate tectonics.
100
This crust is more dense than the continental crust.
What is the oceanic crust.
100
The 3 types of plate boundaries.
What are divergent, convergent, and transform.
100
This lithosphere subjects underneath the continental lithosphere in a continent-oceanic collision site.
What is the oceanic lithosphere.
200
The layer in which you get convection cells.
What is the mantle.
200
Wegener suggested that the continents were combined in a supercontinent called this.
What is Pangea.
200
The Earth's crust is divided into this many major plates.
What is 12.
200
This country has a divergent boundary running through its middle, causing volcanoes and the growth of the country.
What is Iceland.
200
In an ocean-ocean plate collision, the subducting plate is bent downward to form this very deep depression in the ocean floor, called this.
What is a trench.
300
These are the two types of crust.
What are ocean crust and continental crust.
300
These are 3 proofs that Wegener had for continental drift BEFORE WWII.
What is jigsaw fit, geological fit, and fossil evidence.
300
There are 3 kinds of plate motions; what are they?
What are collide, pull apart, or scrape against each other.
300
These are the 3 styles of convergent boundaries.
What are continent-continent, continent-oceanic crust, and ocean-ocean collision.
300
Japan is an example of this.
What is an Island Arc.
400
The lithosphere is made of these 3 layers.
What are ocean crust, continental crust, and upper mantle.
400
The problem with Wegener's theory.
What is that he didn't have an explanation for how continental drift could have occurred.
400
The word "tectonic" refers to the _________ of the crust.
What is the deformation.
400
True or false: continent-continent collisions create subduction zones.
What is false.
400
Volcanoes are formed by these 3 things.
What are subduction, rifting, and hotspots.
500
The mantle is made up of these 3 layers.
What are the upper mantle, asthenosphere, and mesosphere.
500
These are the 3 proofs for continental drift (plate tectonics) AFTER WWII.
What are magnetic reversals, geological rock dating, and GPS.
500
The plate that Hawaii is on.
What is the Pacific plate.
500
This "hot" event happens at the site of continent-oceanic crust collisions.
What is subduction.
500
This is what causes earthquakes.
What is friction that causes plates to stick together, building up energy, and finally releasing that energy.