Vocabulary
Molten rock below the earths surface
Magma
Transform Boundary in California
When two crusts of different density meet
subduction zone
Who figured out the continents were slowly moving over time!
Alfred Wegener
A section of the lithosphere that slowly moves over the asthenosphere, carrying pieces of continental and oceanic crust.
Plate
Convergent boundary (continental- continental)
Himalaya Mountains
A deep valley that forms where two continental plates diverge
rift valley
What did Harry Hess discover during his time on a sub in WWII?
mid ocean ridges OR seafloor spreading
Most active geologic area on earth
Ring of Fire
When the ocean floor diverges and creates new crust
mid ocean ridge
Where is the oldest crust found on the ocean floor?
AT the edge of the continents
Where 2 ocean plates diverge
Mid Atlantic ridge OR Iceland
a crack in the earth's crust resulting from the displacement of one side with respect to the other
fault
Name the specific boundary type(s) that destroys crust
Subduction zones /convergent ( O-C) or (O-O)
Convergent boundary (oceanic- continental)
Cascade Volcanic Mountains OR northwest coast of USA or Mt St Helens
Created during subduction zones where the two different crusts meet
(oceanic) trench
The crusts of the Earth float on this layer ( must name specific layer)
Asthenosphere