Dendrochronology absolute relative dating
Astronomers have plotted the trajectories (directional movement) of various stars and galaxies and determined that all matter in the known universe arose from a common point.Dendrochronology: Also known as tree-ring dating, the science concerned with determining the age of trees by examining their growth rings.Half-life: Measurement of the time it takes for one-half of a radioactive substance to decay.Cosmic rays: Invisible, high-energy particles that constantly bombard Earth from all directions in space.
Dating techniques are procedures used by scientists to determine the age of an object or a series of events.
Relative dating methods are used to determine only if one sample is older or younger than another.
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