Convection
Layers of the Earth
Sea-Floor Spreading
Tectonic Plates
Continental Drift
100
Due to the changes in density of the material due to added _______?
What is heat
100
Smallest part of the Earth
What is crust
100
Who came up with the theory of sea-floor spreading
What is Harry Hess
100
Evidence of sea-floor spreading
What is theory of plate tectonics
100
Supercontinent (all lands)
What is pangaea
200
The upwelling portion of the convection currents is making its way to the surface here
What is Mid-ocean Ridges
200
What are the two types of crust?
What is oceanic and continental
200
Narrow, elongated depression in the sea-floor
What is deep-sea trenches
200
Subducton zones, deep sea trenches
What is oceanic-coninental
200
Who came up with the theory of Continental Drift
What is Alfred Wegener
300
Hot=Less Dense Cold=More Dense
What is density
300
Largest layer of the Earth
What is mantle
300
Echo-Sounding method
What is sonar
300
One oceanic plate subducts below another
What is oceanic-oceanic
300
Where glacial deposits were found
What is south america and australia
400
Two plates come together at this feature
What is Convergent Boundary
400
Composed of iron and nickel
What is outer core and inner core
400
Device that can detect small changes in magnetic field
What is magnetometer
400
Two continental plates collide
What is continental-continental
400
Where was the coal found to also help his theory
What is antarctica
500
The convection current cooling here
What is Subduction Zones
500
Weaker and hotter than the lithosphere
What is asthenosphere
500
Study of the history of Earth's magnetic field
What is paleomagnetism
500
Region where two plates slide,horizontally, past each other
What is transform boundaries
500
What its the plant he used to support his theory
What is glossopteris
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