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

what is an underwater mountain range where plates pull apart called

What is a mid-oceanic ridge

100
The Himalayan mountains are the result of a ___________________________ boundary.
What is convergent boundary
200

rigid, but moving, pieces of Earth's surface

What is tectonic plates.

200
The thickest layer of the Earth
What is the mantle.
200

Evidence of continental drift theory

What is fossil evidence, rock layers and climate change

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
The theory that all continents are fragments of Pangaea now drifting apart
What is the Continental Drift Theory
300

Plates can be found on the _______________________.

What is the lithosphere

300
Evidence of tropical plants were found on this continent
What is Antarctica
300

Rocks near the surface are younger than below

What is superposition

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
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 existed this many millions of years ago
What is around 250 million years ago
400

what boundary is when the plates to move away from each other

What is divergent

400
The San Andreas Fault in California is an example of a ____________________ boundary.
What is a transform boundary
500

Where the convection currents to move the tectonic plates are located

What is mantle

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

where a denser plate goes under a less dense plate

What is subduction 

500

Where would a fossil be found from a 1000 years ago

Where is at the bottom

M
e
n
u