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Ellie's Super Stack!

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QuestionAnswer
What is a method that dates rocks older than 100,000 years old? Potassium-Argon Method
What do we call unstable isotopes? Radioactive.
What is the most common method of absolute dating? Radiometric dating.
What do we call the time it takes for one-half of a radioactive sample to decay? Half-life.
What is the process in which radioactive isotopes break down into stable isotopes? Radioactive decay.
What is the process of figuring out how old an object is? Absolute dating.
What do we call atoms with the same number of protons but a different number of neutrons? Isotopes.
What does a scientist need to know to figure out the absolute age of a rock? The rate of decay for a radioactive element in the rock.
Which two methods of radiometric dating are used for rocks more than 10 million years old? Rubidium-Strontium and Uranium-Lead.
What is the process in which minerals replace tissues? Mineral replacement.
What do we call preserved remains or other evidence of an organism? Fossils.
What is a mark or cavity? A mold.
What is a fossil from a specific time period called? Index fossil.
What is a fossil formed by an animal's movement? A trace fossil.
What is a mold filled iw
Created by: miko380
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