Plate Tectonics

Question 1

crust

Answer 1

The outermost shell of a rocky planet.

Question 2

core

Answer 2

made up of mostly lron. separated into the outer core and inner core

Question 2

mantle

Answer 2

Layer of molten rock between the crust and core

Question 3

tectonic plate

Answer 3

the layer of rock that makes up the outer part of the earth including the crust and upper mantle(lithospheric plate)

Question 4

continental drift theory

Answer 4

The theory that continents gradually drifted over time th their present positions.

Question 5

asthenosphere

Answer 5

A thin layer of earth about 150 miles thick at the border between the mantle and the crust

Question 6

convection current

Answer 6

the process in which the hotter parts of a gas or liquid rise to the top and he cooler denser part sink

Question 7

convergent boundary

Answer 7

when two tectonic plates come together

Question 8

mountains

Answer 8

uplift of crustal plates that form elevated landmasses

Question 9

volcanoes

Answer 9

a vent or fissure in earths surface through which magma and gases are expelled

Question 10

divergent boundary

Answer 10

when tectonic plates split apart

Question 11

transform boundary

Answer 11

when tectonic plates slide past each other

Question 12

fault

Answer 12

Breaks in the crust the movement causes seismic waves which produces earthquakes

Question 13

mid-ocean ridge

Answer 13

A long ridge underwater volcanoes between two diverging oceanic plates

Question 14

Subduction zone

Answer 14

a place where one tectonic plate sinks under another and melts also forms a trench