Vocabulary
Relative dating
Structure of Earth
Plate tectonics
Rock cycle
100
molten rock beneath Earth's surface
What is magma?
100
The youngest layer
What is layer A?
100
Earth's rocky, outer layer
What is the crust?
100
The supercontinent which can be put together using fossils, rock formations, and the fact that current continental coastlines match up
What is pangea?
100
Turning a rock into sediment
What is weathering?
200
the preserved remains of a living thing
What is a fossil?
200
The youngest layer.
What is layer F?
200
A slowly-moving solid layer
What is the mantle?
200
Causes Earthquakes when two plates rub past each other
What is a transform boundary?
200
Rocks transformed from other rocks by heat and pressure
What is a metamorphic rock?
300
where two plates rub past each other
What is a transform boundary?
300
The layers in order from youngest to oldest
What are H, R, M, F, B, I?
300
The denser of Earth's two types of crust
What is oceanic crust?
300
Provides a mechanism for continental drift 
What is seafloor spreading?
300
Rocks created when lava or magma cools
What is an igneous rock?
400
These are found all over the world and existed for only a (geologically) short period of time.
What are index fossils?
400
The oldest fossil. 
What is a trilobite?
400
It is extremely hot, extremely dense, and solid
What is the inner core?
400
This happens where plates converge. Causes old crust to be recycled, and can cause volcanoes
What is subduction?
400
Rocks made from sediments compacted and cemented over time. May contain fossils.
What is a sedimentary rock?
500
States that any feature that is cut through is older than the feature that does the cutting through
What is the law of crosscutting relations?
500
The oldest rock layer
What is layer E? 
500
Plasticky layer on which the lithosphere sits
What is the asthenosphere?
500
Plate margins are places where much activity occurs. Volcanoes happen at this type of boundary
What is a convergent boundary where one plate is subducted beneath another.
500
How long it can take for a rock to metamorphise
millions of years