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Vocabulary
science vocabulary quiz due 10-2-09
20
Geology
9th Grade
09/28/2009

Additional Geology Flashcards

 


 

Cards

Term
Geologic time Scale
Definition
An ideal model used to describe the timing and relationship of the events that have occured during the history of the Earth. 
Term
Continental Drift
Definition
The one continent of Pangaea splitted apart and drifted away to form the modern continents.
Term
Mechanical Weathering
Definition
Breaking down of a rock due to the pressure exerted on the rock.
Term
Chemical Weathering
Definition
Rocks are decomposed, loosened, or dissolved by chemical process to form residual materials.
Term
Weathering
Definition
Decomposition of the earth's rocks, soils, and minerals through direct conact with the planet's atmosphere.
Term
Erosion
Definition
Rocks and rock particles being carried away by wind , water, or ice.
Term
Pangaea
Definition
Single, giant landmass, or super continent, that later broke apart.
Term
Carbon 14-dating
Definition
Radioactive form of carbon that is used to date the remains of living things.
Term
Fossil
Definition
Remains or traces of an organism that lived long ago.
Term
Metamorphic
Definition
Rocks formed from heat and pressure.
Term
Sedimentary
Definition
Rocks formed from compacting and cementing of sediments.
Term
Igneous
Definition
Rock formed from the cooling and hardening of magma.
Term
Foliated
Definition
Mineral crystals arranged in bands.
Term
Nonfoliated
Definition
Mineral crystals not arranged in bands.
Term
Clastic
Definition
Made up of fragments of rocks.
Term
Nonclastic
Definition
Made up of dissolved minerals or the remains of living things.
Term
Intrusive
Definition
Igneous rock formed below the earth's surface.
Term
Extrusive
Definition
Igneous rock formed above the earth's surface.
Term
Focus
Definition
Point beneath the earth's surface where an earthquake starts.
Term
Epicenter
Definition
Place on earth's surface directly above the focus.
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