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(continental Drift (geologic units match, fossils match, ancient climates,…
continental Drift
geologic units match
fossils match
ancient climates
continents fit like a puzzle
Boundaries
Continental Drift
Diverge
moving apart
new crust is made
the plates move away from each other.
only place where new crust is formed
convergent
the plates move towards each other
oceanic crust = made of metals
continental crust= made of silica
Transform
Two plates slide past each other
Earthquakes
Islands
oceans
Mountains
Rocky Mountains
Volcanoes
shield volcano
Hawaii
#
composite cone
Stratovolcamo- Mt. St. Hekens
cinder cone
Oceanic-continental convergent boundary
volcano makers
#
Mt. St. Helen's
continental- Continental Convergent Boundary
mountain makers
Mt. Everest
Oceanic- oceanic Convergent boundary
island arcs
#
Hot Spots
Hawaii is a hot spot
#
Zion is a hot spot
#
Hawaii is a non explosive hot spot
#
Zion is a explosive hot spot
How
what drives plate tectonics
gravity
convection currents
ridge push/slab pull
