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Science Chapter 8

Published on Dec 04, 2015

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PRESENTATION OUTLINE

Science Chapter 8

By:Becky Goebel
Photo by angela7dreams

fold mountain

a mountain  made up of mostly rock layers folded by being squeezed together

fault-block mountain

a mountain made by huge tilted blocks of rocks separated by surrounding rocks by faults
Photo by CircStock

weathering

the breaking of rocks into smaller pieces by natural process

erosion

picking up and removing rock particles
Photo by Al_HikesAZ

soil

loose weathered rock that can grow plants
Photo by Miguel Vera

humus

material produced by breaking down plant and animal remains
Photo by bill barber

soil horizon

series of horizons in soil from the surface down to the bedrock
Photo by Ron Schott

groundwater

rainwater that soaks into spaces between rock fragments underground
Photo by foto3116

mass wasting

downhill movement of earth mater caused by gravity
Photo by brewbooks

deposition

the dropping off of sediment

glacier

a huge sheet that moves slowly over the land
Photo by peterp

till

jumble of many sizes of sediment deposited by a glacier

moraine

 a deposit many sizes of sediment in front or along the sides  glacier 
Photo by cletch

mineral

naturally occurring solid in earths crust  
Photo by Smabs Sputzer

igneous rock

forms when hot liquid rock cools and hardens into a lot of rockes
Photo by loonyowl

sedimentary rock

forms from pices of other rocks that are pushed togeather
Photo by Ron Schott

metaophic  rock

from anther kind of rock that is changed  by heat

rock cycle

rocks continually changing from one kind into another

superposition

a mixture of small particles

relative age

age of the rock compared to another

geologic column

listing of earth's rock in layers from oldest to youngest

fossil

 imprints, trace of remains in earth's crust (living) 
Photo by Delkarm

index fossil

like a fossil but was widespread, only lived for a short time 
Photo by Darkroom Daze

half-life

 half the  mass of a radioactive element in it to brakes apart

absolute age

age of a rock in years

era

1 of the 4 long stretches of time in earth's history