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AWSOME Ch. 7 science

Published on Feb 01, 2016

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PRESENTATION OUTLINE

ch. 7 science

BY:Daytona Clements
Photo by brewbooks

Crust

Earths solid rocky surface with continents the ocean floor 

original horizontality

idea that many kinds of rocks form flat,horizontal layers
Photo by jsj1771

continental drift

the idea that a supercontinent split apart into peices
Photo by catface3

sea floor spreading

idea that that new crust is forming at ridges in the sea floor
Photo by wockerjabby

magma

hot, molten rock under earthrs surface
Photo by pierre c. 38

plate tectonics

Earths surface is broke into plates that slide across the mantle
Photo by gamene

mantle

The layer beneath earths crust

subduction

A sliding of a denser ocean plate under another plate
Photo by kqedquest

fault

a huge crack in earths crust at or below the surface

focus

The point where an earthquake starts  as rocks slide past
Photo by Great Beyond

seismic waves

A vibration that spreads away from the focus
Photo by Tex Texin

epicenter

The point on earth's surface that is above the focus
Photo by quapan

aftershock

Shaking of earth's crust after the initial of an earthquake
Photo by Shazster

seismograph

a device that detects the earth shaking in a earthquake
Photo by Frankenstein

magnitude

The amount of energy released by an earthquake

vent

central opening in a volcanic area in which magma may escape

lava

Magma that reaches earth's surface and flows out of a vent
Photo by gnuckx

crater

A cuplike hollow that forms at the top of a volcano around the vent

hot spot

cinder-cone volcano

composite volcano

geothermal energy

shield volcano