Plate Tectonics

Question 1

Mountains

Answer 1

Uplift of crustal plates that form elevated landmasses.

Question 2

Volcanoes

Answer 2

A vent or fissure in Earth’s surface through which magma and gases are expelled.

Question 3

Divergent boundary

Answer 3

When tectonic plates split apart.

Question 4

Transform boundary

Answer 4

When tectonic plates slide past each other.

Question 5

Fault

Answer 5

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

Question 6

Mid-ocean ridge

Answer 6

A long ridge of underwater volcanoes between

Question 7

Subduction zone

Answer 7

A plane where one tectonic plate sinks under another and melts. also forms a trench.

Question 8

Crust

Answer 8

The outermost shell of a rocky planet.

Question 9

core

Answer 9

made up iron. separated into the outer core (molten) and (inner) core (solid)

Question 10

Mantle

Answer 10

layer of molten rock between the crust and core

Question 11

tectonic plates

Answer 11

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

Question 12

continental drift valley

Answer 12

the theory that continents gradually drifted over time to their present positions

Question 13

asthenosphere

Answer 13

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

Question 14

convection current

Answer 14

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

Question 15

convergent boundary

Answer 15

when two tectonic plates come together