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Rock Layers (Geologi

Rock Layers (Geologic Time)

TermDefinition
Geologic Time Scale Used to divide time into eras since the beginning.
Sedimentary Rock Rock that forms when sediment (small pieces of rock) from erosion is compressed together.
Erosion When small pieces of rock (sediment) are moved around by wind and/or water.
Deposited When sediment stops moving and collects in a new area.
Weathering When rocks are broken down into smaller pieces.
Intrusion When molten rock from inside Earth moves through cracks in the rock layers, sometimes coming to Earth's surface.
Relative Dating The age of something based on its placement in the rock layers.
Absolute Dating Determining the exact age of something.
Fossil Evidence of past life that have been preserved in rocks.
Plate Tectonics The movement of Earth’s plates that can cause rock layers to move.
Created by: mcclellanfac
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