Plate Tectonics

Question 1

Crust

Answer 1

The outermost shell of a rocky planet.

Question 2

Mantle

Answer 2

layer of molten rock between the crust and core

Question 3

Core

Answer 3

make up of mostly Iron. Separated into the outer core (molten) and inner core (solid).

Question 4

Tectonic Plates

Answer 4

The layer of rock that makes up the outer part of the earth, including the crust and upper mantle.

Question 5

Continental Drift Theory

Answer 5

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

Question 6

Asthenosphere

Answer 6

Thin layer of earth about 150 miles thick at the border between the mantle and the crust.

Question 7

convection current

Answer 7

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

Question 8

Convergent Boundary

Answer 8

When two tectonic plates come together.

Question 9

Mountains

Answer 9

Uplift of crustal plates that form elevated landmasses

Question 10

Volcanoes

Answer 10

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

Question 11

Divergent Boundary

Answer 11

When tectonic plates split apart.

Question 12

Transform boundary

Answer 12

Tectonic plates slide past each other

Question 13

Fault

Answer 13

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

Question 14

Mid-Ocean Ridge

Answer 14

long ridge of under water volcanoes between two divergent oceanic plates.

Question 15

Subduction zone

Answer 15

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

Question 16

Rift Valley

Answer 16

long narrow valley between two divergent continental plates.