Question | Answer |
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 |