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Stack #4643302

QuestionAnswer
uniformitarianism a geologic scientific theory
fossil the preserved remains of plants and animals whose bodies were buried in sediments, such as sand and mud, under ancient seas, lakes and rivers
trace fossil geological records of the activities and behaviors of past life
climate The long-term pattern of temperature, precipitation, and weather conditions in a particular region.
ice core A cylindrical sample drilled from ice sheets or glaciers, used to study past climate, atmospheric gases, and temperature changes over thousands of years.
relative dating Determining the age of a rock or fossil compared to other nearby rocks or fossils, without providing a numerical age.
superposition The principle that in undisturbed sedimentary rock layers, the oldest layers are at the bottom and the youngest are at the top.
unconformity A gap in the geological record where rock layers were eroded or not deposited for a period of time.
geologic column n idealized sequence of rock layers showing Earth's history, used as a reference for dating rocks and fossils.
absolute dating Determining the numerical age of a rock, fossil, or sediment using techniques like radioactive decay.
radioactive decay he processes by which an unstable radioactive isotope loses particles and energy, transforming into a more stable isotope over time.
half-life the time required for half of the atoms of a radioactive isotope to decay into a stable form.
radiometric dating A method of determining absolute age using the known decay rates of radioactive isotopes in rocks or fossils.
Created by: Fabian Carmona
 

 



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