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Slide Notes

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Ch.8 How Earth Changes Over Time

Published on Nov 21, 2015

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PRESENTATION OUTLINE

FOLD MOUNTAIN

MOUNTAIN MADE MOSTLY OF ROCK LAYERS

FAULT BLOCK MOUNTAIN

MOUNTAIN MADE OF LARGE TILTED ROCKS

WEATHERING

THE BREAKING DOWN OF ROCK BY NATURAL CAUSES
Photo by CJ Isherwood

EROSION

THE REPOSITIONING OF ROCK

SOIL

Great dirt for planting plants
Photo by Rusty Clark

Humus

Dead animals and plants in soil
Photo by Andrew|W

Soil horizon

Layers of soil from bedrock and above
Photo by KatmaiNPS

Ground water

Water that passes through soil and rock

Mass wasting

Down hill movement of earths material
Photo by brewbooks

Deposition

The dropping off of sediment
Photo by lvanvlee8

Glacier

A huge sheet of ice and snow
Photo by Piero...

Till

A lot sediment deposited by a glacier

Moraine

Sediment along a glacier
Photo by Travis S.

Mineral

A natural solid in earths crust
Photo by holdit.

Igneous rock

A rock made from cooled off liquid lava
Photo by kevinzim

Sedimentary rock

A rock made from other rocks being forced together
Photo by Paul Garland

Metamorphic rock

A rock that is changed by heat and pressure
Photo by Ron Schott

Rock cycle

Rocks continually changing in a cycle
Photo by wockerjabby

Superposition

A series of rock layers

Relative age

The age of different rocks
Photo by tomylees

Geologic column

A listing of the earths rock layers
Photo by Travis S.

Fossil

An imprint of a once living thing
Photo by Rob Swatski

Index fossil

The remains of a living thing that was widespread
Photo by mcarpentier

Half-life

The time it takes for an element to change by radioactivity
Photo by Great Beyond

Absolute age

The age of a rock in years
Photo by Bravehardt

Era

One of the long periods in earths history
Photo by masatsu