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Earth's Layers

TermDefinition
Crust The outer layer of Earth, which is up to 40 miles deep
density the degree of compactness of a substance
fossils the remains or impressions of a prehistoric organism preserved or petrified form or as a mold or cast in rock
Geological history the science devoted to the study of the Earth, particularly the solid Earth and the rocks that compose it
Mantle The region of the interior of the Earth between the core and the crust
Outer core Fluid layer about 2,300 km thick and composed of iron and nickel that lies above Earth's solid inner core and below it's mantle
Relative Dating Is the science of determining the relative order of past events
Rocks The solid mineral forming part of the surface of the earth and other similar planets, exposed on the surface or underlying the soil or oceans
Rock layers One3 of a number of portions or divisions linked to levels; an allegory with many strata of meanings. A single bed of sedimentary, generally consisting of one kind of matter representing continuous deposition.
Timeline A linear representation of important events in the order in which they occurred
Created by: mg071304*