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Plate Tectonics (Continental Drift (Thin and thick sediment (Thicker on…
Plate Tectonics
Continental Drift
plates fit like a puzzle
continents fit into each other
Africa and South America fit into eachother
Fossils match
Same on Africa and South America
Same in continents on opposite side of world
Ancient climate
Antarctica was warm
Antarctica has coal
coal is found in warm climates
Antarctica was on the equator
younger in the middle
older sediment is on the outside
shows the plates move
Thin and thick sediment
Thicker on bottom
thinner on top
shows they move
How does it work?
drives plate tectionics
convection currents
ridge push/ slab pull
gravity
three boundaries
convergent
divergent
transform
plates
fit like a soccer ball
form boundaries
Boundaries
Transform
slide passed each other
they cause earthquakes
Convergent
collide into each other
radioactive decay in the core
radiation is released
high temperatures
melts core
more dense
sinks
goes to the core
pushes less dense
towards the crust
Divergent
move away from each other
new crust is formed
starts at the core
driven by
gravity
convection currents
ridge push/ slab pull
Hot Spots
convergent boundaries
recycled crust
effect of plate boundaries
mantle
rocks melt
hits the crust
magma
forms volcanoes
ring of fire
Hawaiian islands
