Plate Tectonics

Question 1

Crust

Answer 1

The outermost shell of a rock planet

Question 2

Mantle

Answer 2

Layer of molten rock between the crust and core

Question 3

Core

Answer 3

Made up of mostly iron seperated into the outer core and inner core

Question 4

Continental drift theory

Answer 4

The theory that cntinents gradually drift over time

Question 5

tetonic plate

Answer 5

THe layer of rock that makes up the outer part of the earth

Question 6

asthenosphere

Answer 6

a thin layer of earth about 150 miles thick at the border between the mantleand the crust

Question 7

convection current

Answer 7

the prosses in witch the hotter parts of a gas or liquid rise to the top and the cooler dense part sink

Question 8

convergent boundry

Answer 8

When two tectonic plates come together

Question 9

mountaians

Answer 9

uplift of crustal plates that form elevated land masses

Question 10

volcanoes

Answer 10

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

Question 11

divergent plates

Answer 11

divergent boundary when tectonic plates move away from each other

Question 12

fault

Answer 12

breaks in the crust the movement causes sesmic waves which produces earthquake

Question 13

midoceanic ridge

Answer 13

a long ridge of underwater volcanoesbetween two diverging oceanic plate

Question 14

subduction

Answer 14

A place where one tectonic plate sinks and another melts causing a trench

Question 15

Rift valley

Answer 15

A long narow valley between two diverging continental plates