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Phenomena:!!: (Fossils:!: (Radiometric Dating (a method of dating…
Phenomena:!!:
Fossils:!:
Radiometric Dating
a method of dating geological or archeological specimens by determining the relative proportions of particular radioactive isotopes present in a sample.
Absolute Age
The geologic age of a fossil, or a geologic event or structure expressed in units of time, usually years.
the remains or impression of a prehistoric organism preserved in petrified form or as a mold or cast in rock.
Volcanoes:!:
a mountain or hill, typically conical, having a crater or vent through which lava, rock fragments, hot vapor, and gas are being or have been erupted from the earth's crust.
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Shield volcanoes
a broad, domed volcano with gently sloping sides, characteristic of the eruption of fluid, basaltic lava.
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Earthquake:!:
a sudden and violent shaking of the ground, sometimes causing great destruction, as a result of movements within the earth's crust or volcanic action.
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Ring of fire
A major belt of volcanoes and earthquakes that rims the Pacific Ocean along a tectonic plate boundary