Physical Layers of the Earth
Plate Boundaries
Sea-Floor Spreading/Plate Tectonics
Miscellaneous
Continental Drift
100
plastic-like layer of the Earth's mantle that slowly moves
asthenosphere
100
plate boundary where the plates move away from each other
divergent boundary
100
process in which new ocean crust forms as magma rises towards the surface and solidifies
sea-floor spreading
100
US state where the San Andreas Fault can be found is _?_.
California
100
individual who came up with the hypothesis about continental drift
Alfred Wegener double points: What was Alfred Wegener's "day job?"
200
liquid layer of the core that produces our magnetic field
outer core
200
plate boundary where the plates slide past each other in opposite directions or in the same direction with one moving faster than the other
What is transform boundary?
200

As one moves away from the mid-ocean ridge (at divergent boundary), the age of the crustal rock on the ocean floor _?_.

increases

200
The rising of less dense, heated material and the sinking of more dense, cooler material is known as _?_.
convection or a convection cell
200
name of the super continent
What is Pangaea? double points: Name one of the smaller super continents Pangaea broken into. triple points: Name both of the smaller continents Pangaea broke into.
300

the layer of Earth that lies below the asthenosphere and above the outer core (hard!  bonus question)

the mesosphere

300
plate boundary where the plates move towards each other
convergent boundary
300
What is it called when Earth's magnetic poles change place?
magnetic reversal
300
Where does the heat comes from to drive plate tectonics?
Earth's core
300

List three of the main proofs for continental drift.

continental coasts fitting together, similar fossils, similar rocks, and glacial grooves

400
broken outer layer of the Earth composed of the crust and the upper mantle
lithosphere
400
plate boundary that destroys or recycles the Earth's crust
convergent boundary
400
theory that explains how large pieces of the lithosphere move and change shape
the theory of plate tectonics
400
List the three layers of the Earth by composition.
crust, mantle, and core
400

Name the main problems scientists had with continental drift theory.

the mechanism that was pushing the continents was unknown

500
solid ball of iron and nickel
What is the inner core?
500
plate boundary that creates or forms the Earth's crust
divergent boundary
500

The locations of frequent _?_ along plate boundaries help support the theory of plate tectonics.

earthquakes OR volcanoes

500
Area at a convergent boundary where one plate is pulled beneath another and is destroyed is called a _?_.
subduction zone
500
hypothesis that states continents once formed a single landmass, broke up, and moved to their current locations
continental drift
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