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Science Test

Semester Exams!!

TermDefinition
Uniformitarianism a principle that geologic processes that occurred in the past can be explained by current geologic processes.
The Law of Cross-Cutting relationship is that a fault or igneous intrusion is always younger than the rock layers it cuts through.
Relative age The age of an object in relation to the ages of other objects.
Absolute age The numeric age of an object or event often stated in years before the present as established by an absolute dating process, such as radiometric dating.
The law of superposition states that an undeformed sedimentary rock layers is older than the layers above it and younger than the layers before it.
Unconformities a break in the geologic record created when a rock layers are Ende or when sediment is not deposited for a long period of time.
Nonconformity Unsatisfied igneous or metamorphic rock may be uplifted to Earth's surface by crustal movement
Angular unconformity forms when rock deposited in horizontal layers is folded or tilted and then eroded.
Half life is the time it takes half the mass of a given amount of a radioactive parent isotope to decay into its daughter isotopes.
Created by: Jeromecalibo
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