Plate Tectonics Study Review with Complete Solutions
lithosphere - -a solid layer of Earth made up of older oceanic crust moves away from the ridge
the crust and upper mantle
bathymetric map - -a map of the bottom of the
asthenosphere - -The soft layer of the mantle ocean showing the depths of the ocean floor and its
on which the lithosphere floats geologic features
oceanic crust - -thinner, younger part of Earth's bathy - -Greek for deep ocean
crust that makes up the ocean floor
metry - -Greek for the process of measuring
continental crust - -thicker, older part of Earth's
crust that makes up large land masses
mid-ocean ridge - -an underwater mountain
chain where new ocean floor is formed
continental drift - -the theory that the continents
once formed a single landmass, broke up, and drifted
to their present locations trench - -a deep valley along the ocean floor
beneath which oceanic crust slowly sinks toward the
mantle
Alfred Wegener - -a German scientist who
proposed the theory of continental drift in 1915
convergent boundary - -a tectonic plate
boundary where two plates collide, come together, or
Pangaea - -from the Greek "all Earth," a large, crash into each other
ancient supercontinent that was made of all the
continents joined together
divergent boundary - -a tectonic plate boundary
where two plates move away from each other
tectonic plates - -pieces of Earth's lithosphere
transform boundary - -a tectonic plate boundary
plate tectonics - -a theory stating that the where two plates slide horizontally past one another
earth's surface is broken into plates that move
earthquake - -the shaking that results from the
subduction zone - -an area where two plates of movement of rock beneath Earth's surface
crust collide and the denser oceanic crust is forced
beneath the less dense continental plate
volcano - -opening in the Earth's crust where
lava, gas and ash can erupt
Harry Hess - -the geologist and naval officer
that discovered sea floor spreading
seafloor spreading - -the process by which new
oceanic crust forms along a mid-ocean ridge and
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lithosphere - -a solid layer of Earth made up of older oceanic crust moves away from the ridge
the crust and upper mantle
bathymetric map - -a map of the bottom of the
asthenosphere - -The soft layer of the mantle ocean showing the depths of the ocean floor and its
on which the lithosphere floats geologic features
oceanic crust - -thinner, younger part of Earth's bathy - -Greek for deep ocean
crust that makes up the ocean floor
metry - -Greek for the process of measuring
continental crust - -thicker, older part of Earth's
crust that makes up large land masses
mid-ocean ridge - -an underwater mountain
chain where new ocean floor is formed
continental drift - -the theory that the continents
once formed a single landmass, broke up, and drifted
to their present locations trench - -a deep valley along the ocean floor
beneath which oceanic crust slowly sinks toward the
mantle
Alfred Wegener - -a German scientist who
proposed the theory of continental drift in 1915
convergent boundary - -a tectonic plate
boundary where two plates collide, come together, or
Pangaea - -from the Greek "all Earth," a large, crash into each other
ancient supercontinent that was made of all the
continents joined together
divergent boundary - -a tectonic plate boundary
where two plates move away from each other
tectonic plates - -pieces of Earth's lithosphere
transform boundary - -a tectonic plate boundary
plate tectonics - -a theory stating that the where two plates slide horizontally past one another
earth's surface is broken into plates that move
earthquake - -the shaking that results from the
subduction zone - -an area where two plates of movement of rock beneath Earth's surface
crust collide and the denser oceanic crust is forced
beneath the less dense continental plate
volcano - -opening in the Earth's crust where
lava, gas and ash can erupt
Harry Hess - -the geologist and naval officer
that discovered sea floor spreading
seafloor spreading - -the process by which new
oceanic crust forms along a mid-ocean ridge and
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