Dendrochronology absolute relative dating

As a result of this crust movement, the continents are constantly rearranging themselves in a phenomenon known as continental drift.When two plates intersect, any number of geological events (e.g., mountain building, volcanic eruptions, and earthquakes) can result.Continental drift can be measured by a variety of techniques, and geologists have discovered that different land masses drift at different rates.

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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