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Vocabulary
Structure of the Earth
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

What does converge mean?

to come together

100
The Himalayan mountains are the result of a ___________________________ boundary.
What is convergent boundary
200
A number of rigid, but moving, pieces of Earth's surface
What is tectonic plates.
200
The thickest layer of the Earth
What is the mantle.
200

What is a divergent boundary and what happens there?

two plates drift apart from one another

200

How many tectonic plates are there?

7

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

What are two options that can happen at a convergent boundary?

volcanoes, mountains, subduction 

300

What is continental drift?

the idea that the continents were once together and moved apart

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

What kind of boundary causes earthquakes? How?

transform, the plates slide past one another

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 under the _____________________ and thickest under the _____________________.
What is thinnest under the ocean and thickest under the continents.
500

What are two things that can be caused by a divergent boundary?

rift valleys, trenches

500

List the 3 boundaries and something that can happen there AND tell a reason it is important to study place tectonics. 

1. convergent - subduction, volcanoes, mountains

2. divergent - Rift Valleys, trenches

3. transform - Earthquakes 


answers may vary