Hjh 6Th Grade Science Tectonic Plates

Front 1

Eurasian Plate

Back 1

a tectonic plate division of the lithosphere, including most of the landmasses of Europe and Asia

Front 2

Tectonic Plates

Back 2

Huge pieces of lithosphere that slowly move on the asthenosphere and consist of the crust and the rigid, uppermost part of the mantle

Front 3

African Plate

Back 3

a tectonic plate division of the lithosphere that includes the Continental crust of Africa and the surrounding oceanic crust

Front 4

South American Plate

Back 4

A tectonic plate division of the lithosphere that includesthe continental crust of South America and the oceaniccrust extending to the Mid-Atlantic ridge.

Front 5

Indo-Australian Plate

Back 5

A tectonic plate division of the lithosphere thatincludes the continental crust of India andAustralia and the surrounding oceanic crust.

Front 6

Pacific Plate

Back 6

A tectonic plate division of the lithosphere that iscomposed entirely of oceanic crust and liesbeneath the Pacific Ocean.

Front 7

Antarctic Plate

Back 7

A tectonic plate division of the lithosphere thatincludes the continental crust of Antarcticaand the surrounding oceanic crust.

Front 8

Density of Plates

Back 8

The amount of matter in a given space orvolume; oceanic crust is thinner, but denserthan continental crust.

Front 9

Crustal Rock Material

Back 9

Crust can be either oceanic, which isthin and dense, or continental, whichis thick and less dense.

Front 10

Plate Boundary

Back 10

The place where two different plates have contact.

Front 11

Convergent Boundary

Back 11

Occurs when two tectonic plates movetoward each other and collide.

Front 12

Subduction

Back 12

The process in which a denser plate is pusheddownward beneath a less dense plate when platesconverge; occurs at continental to oceanic boundariesand oceanic to oceanic boundaries.

Front 13

Volcanic Eruptions

Back 13

Events in which molten rock spews out from the mantleto the surface of Earth as ash, lava, and gases; majorgeological events that occur when a dense platesubducts below a less dense plate.

Front 14

Mountain Building

Back 14

Major geological event that occurs whencontinental plates of equal density converge,resulting in mountain chains.

Front 15

Divergent Boundary

Back 15

Occurs when two tectonic plates move awayfrom each other.

Front 16

Spreading Ridges

Back 16

Ridges formed from new crustal materialat diverging oceanic plate boundaries

Front 17

Ocean Basin

Back 17

An area of oceanic crust covered by sea waterand surrounded by areas of continental crust.

Front 18

Transform Boundary

Back 18

Occurs when two tectonic plates slidepast each other.

Front 19

Earthquakes

Back 19

Major geological events that occur when platesshift suddenly and release stored energy; frequentoccurrences along all types of plate boundaries.