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Dating Method

Methods, absolute and relative

Science of determining the age of rocks is called? Geochronology
Relative geologic dating is? places with geologic events, and the rocks representing those events, in sequence. *which event preceded or followed another.
Actual Geologic dating or absolute is? The actual age of rocks in years.
Atomic number is? Number of protons in the nucleus
Atomic Mass is? Sum of masses of its protons and neutrons.
Isotopes are? Two or more varieties of the same elemet that have idential atomic numbers but different mass numbers!
Radioactive decay is? Losing particles from nucleus
Alpha particles are? Positively charged ions of the element helium. Weight of 4 and atomic number of 2.
Beta Particles are? Electron that is released when a neutron splits into a proton and an element.
Gamma radiation is? invisible electromagnetic waves
Daughter elements are formed from? the radioactie decay of the parent element. New atomic number.
A halflife is? The amount of time it takes for half a atom to decay.
What are fission tracks? Small tunnels that are produced when high-energy particles from Uranium nuclei were fired off furing spontaneious fission.
Metamorphic rocks? You can get the age of metamorphism or the gae of the orginal rock
Sedimentary rocks? You can get the age of the orginial rocks that produced the sediment grains
What does grain size indicate? The cooling history
Radiometric dating? Radio active decay- unstable isotopes
Created by: johnsonhm