plate tectonics Flashcards
1
Q
crust
A
the outermost shell of a planet,
2
Q
mantle
A
layer of molten rock.
3
Q
core
A
made up of mostly iron.
4
Q
tectonics plate
A
the layer of rock.
5
Q
continental drift
A
the theory that continents gradually drifted over time
6
Q
asthenosphere
A
a thin layer of earth
7
Q
convection current
A
the process in which hotter parts of gas
8
Q
convection boundary
A
when tectonic plates come together
9
Q
mountains
A
uplift of crustal plates
10
Q
volcanoes
A
a vent or fissure
11
Q
fault
A
breaks in the crust
12
Q
mid ocean ridge
A
a long ridge of underwater volcanoes
13
Q
subduction zone
A
a place where one tectonic plate sinks
14
Q
rift valley
A
rift a long narrow valley
