Plate Tectonics

Question 1

Crust

Answer 1

The outermost shell of a rocky planet

Question 2

Mantle

Answer 2

Layer of molten rock between crust and core

Question 3

Core

Answer 3

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

Question 4

Tectonic Plate

Answer 4

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

Question 5

Continental Drift Theory

Answer 5

The theory that continents gradually drifted over the time to their present position

Question 6

Asthenosphere

Answer 6

A 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 gas or liquid rise to the top and the top and the cooler, denser parts sink

Question 8

Molten

Answer 8

Liquified by heat

Question 9

Magma

Answer 9

A hot, molten rock below the Earth’s surface

Question 10

Lava

Answer 10

Molten rock that erupts from a volcano. Above the Earth’s surface.

Question 11

Fault

Answer 11

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

Question 12

Mid-Ocean Ridge

Answer 12

A long ridge of underwater volcanoes between two diverging oceanic plates

Question 13

Subduction Zone

Answer 13

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

Question 14

Rift Valley

Answer 14

A long narrow valley between two diverging continental plate.