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
When there was only one continent
Pangea
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 pieces of the crust
What is tectonic plates.
200
The thickest layer of the Earth.  Is under the crust.
the mantle.
200
Evidence of matching animal fossils from two separate continents _____________________ and _____________________
What is Africa and South America
200
When new sea floor is made
sea-floor spreading
200
Hot air or liquid is less ________________ than cool air or liquid.
What is dense
300
The theory that all continents are moving and were once together
Continental Drift 
300
The only liquid layer of the Earth
Outer Core
300
Evidence of continental drift
fossils and the shape of continents
300
What type of boundary is seafloor spreading?
Divergent 
300
_________________ are a result of transform boundaries.
What is earthquakes
400
When one tectonic plate sinks under another tectonic plate
subduction
400
This is where convection occurs
The Mantle
400
How plates move
convection
400
This is the mechanism (what causes) the plates to move
convection
400
When tectonic plates move apart
divergent boundary
500
Although the hottest layer of the Earth, this layer is solid metal
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
Explain convection
When hot things rise because they are more dense and cool things sink because they are less dense
500
What type of boundary is when tectonic plates slide past each other?
Transform
500
New rocks on the seafloor are created by under water ________________.
volcanoes
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