Topic: Paleontology | Definition of Paleontology by Merriam-Webster

: a science dealing with the life of past geological periods as known from fossil remains To many Americans, and nearly all young ones, paleontology can be summed up in one word: dinosaurs.

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Dating | geochronology | Dating: Dating, in geology, determining a chronology or calendar of events in the history of Earth, using to a large degree the evidence of organic evolution in the sedimentary rocks accumulated through geologic time in marine and continental environments. To date past events, processes, formations, and

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Radioactive contamination - Wikipedia Radioactive contamination, also called radiological contamination, is the deposition of, or presence of radioactive substances on surfaces or within solids, liquids or gases (including the human body), where their presence is unintended or undesirable (from the International Atomic Energy Agency - IAEA - definition).. Such contamination presents a hazard because of the radioactive decay of the.

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dating - English-French Dictionary dating - traduction anglais-français. Forums pour discuter de dating, voir ses formes composées, des exemples et poser vos questions. Gratuit.

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Radioactive Decay: A Sweet Simulation of a Half-life. To demonstrate that the rates of decay of unstable nuclei can be measured, that the exact time that a certain nucleus will decay cannot be predicted, and that it takes a very large number of nuclei to find the rate of decay. This is the second lesson in a three-lesson series about isotopes.

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What Are Radioactive Materials? - Definition, Examples. As a member, you'll also get unlimited access to over 75,000 lessons in math, English, science, history, and more. Plus, get practice tests, quizzes, and personalized coaching to help you succeed.

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What is Carbon-14 (14C) Dating? Carbon Dating Definition Radiocarbon dating is a method that provides objective age estimates for carbon-based materials that originated from living organisms. An age could be estimated by measuring the amount of carbon-14 present in the sample and comparing this against an internationally used reference standard.

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What Are Radioactive Elements? - In this lesson, we'll go over the definition of radioactive elements. We'll learn about the different types of particles emitted during the process of radiation and look at some examples of.

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Dating | Define Dating at Dating definition, a particular month, day, and year at which some event happened or will happen: July 4, 1776 was the date of the signing of the Declaration of Independence. See more.

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radioactivity | Definition, Types, Applications, & Facts. Radioactivity: Radioactivity, property exhibited by certain types of matter of emitting energy and subatomic particles spontaneously. It is, in essence, an attribute of individual atomic nuclei. Radioactive decay is a property of several naturally occurring elements as well as of artificially produced isotopes of the elements.