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Ch 7 Science

Published on Nov 18, 2015

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PRESENTATION OUTLINE

Ch 7 Science

By Braden Griffiths
Photo by paul bica

Crust

The layer before the mantle on the Earth

original horizontality

The idea that many rocks form flat and horizontal on the Earth's surface 

Continental drift

the idea that a supercontinent split apart

sea-floor spreading

The idea that the crust is moving underneath the sea 
Photo by wockerjabby

Magma

Hot molten rock below the earth surface
Photo by pierre c. 38

Plate tectonics

the idea the idea that Earth's surface is broken into plates

mantle

molten lava under the Earth's crust

Subduction

plates sliding underneath each other

Fault

huge crack in the Earth's crust

Focus

the point where the earthquake starts

seismic waves

Vibration that moves away from focus 

epicenter

The point above the earthquake

aftershock

Shaking after an earthquake 

seismograph

how to find out where a epicenter of an earthquake is and how strong it is

magnitude

how strong an earthquake is

vent

the top of a volcano where lava comes out

lava

magma that has came above the surface

crater

a hole in the ground made from large impact 

Hot spot

A very hot part of the mantle that can melt the crust

cinder-cone volcano

a steep sided volcano made from explosive eruption 

shield volcano

a wide gently sloped volcano that formed from flowing lava
Photo by filippo_jean

composite volcano

a cone formed from explosive eruptions followed by flowing lava flow
Photo by Koocheekoo

geothermal enegry

water heat from below the surface