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The videos on Study. Students in online learning conditions performed better than those receiving face-to-face instruction. Explore over 4, video courses. Find a degree that fits your goals. Learn about half-life and how it is used in different dating methods, such as uranium-lead dating and radiocarbon dating, in this video lesson. Try it risk-free for 30 days. An error occurred trying to load this video. Try refreshing the page, or contact customer support. Register to view this lesson Are you a student or a teacher? I am a student I am a teacher. What teachers are saying about Study.
Conditions of Fossil Preservation: Are you still watching?
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Relative Dating with Fossils: Index Fossils as Indicators of Time. Methods of Geological Dating: Numerical and Relative Dating.
What is Relative Dating? What is the Age of the Solar System? Absolute Time in Geology.
IB Biology/Option D - Evolution
What is Carbon Dating? Methods for Determining Past Climates. Introduction to Physical Geology: Intro to Natural Sciences. Middle School Earth Science: Weather and Climate Science: UExcel Weather and Climate: Guns, Germs, and Steel Study Guide. Holt McDougal Introduction to Geography: Radiometric dating is used to estimate the age of rocks and other objects based on the fixed decay rate of radioactive isotopes.
Radiometric Dating The aging process in human beings is easy to see. Radioactive Decay The methods work because radioactive elements are unstable, and they are always trying to move to a more stable state. Half-Life So, what exactly is this thing called a half-life? Uranium-Lead Dating There are different methods of radiometric dating that will vary due to the type of material that is being dated. Potassium-Argon and Rubidium-Strontium Dating Uranium is not the only isotope that can be used to date rocks; we do see additional methods of radiometric dating based on the decay of different isotopes.
Radiocarbon Dating So, we see there are a number of different methods for dating rocks and other non-living things, but what if our sample is organic in nature? Try it risk-free No obligation, cancel anytime. Want to learn more? Select a subject to preview related courses: Lesson Summary Let's review.
Learning Outcomes As a result of watching this video, you might be able to: U is found in many igneous rocks, soil and sediment. U decays to Pb with a half-life of million years. Due to its long half-life, U is the best isotope for radioactive dating, particularly of older fossils and rocks. C is another radioactive isotope that decays to C This isotope is found in all living organisms. Once an organism dies, the C begins to decay. The half-life of C, however, is only 5, years. Because of its short half-life, the number of C isotopes in a sample is negligible after about 50, years, making it impossible to use for dating older samples.
C is used often in dating artifacts from humans.
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Corina Fiore is a writer and photographer living in suburban Philadelphia. She earned a B.
Fiore taught high school science for 7 years and offered several teacher workshops to regarding education techniques. She worked as a staff writer for science texts and has been published in Praxis review materials for beginning teachers. Relative Dating Fossils can be dated relative to one another by noting their positions in strata. My presentations Profile Feedback Log out. Auth with social network: Registration Forgot your password? A measure of Time Pages A measure of Time Pages. Process to find the approximate age of rocks or fossils.