Radiometric Dating
Flashcard
•
Science
•
9th - 12th Grade
•
Hard
Barbara White
FREE Resource
Student preview
26 questions
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1.
FLASHCARD QUESTION
Front
Radiometric Dating Noun
[ray-dee-oh-met-rik day-ting]
Back
Radiometric Dating
A method used to determine the age of materials such as rocks or carbon, based on the decay of radioactive isotopes.
Example: This graph shows that after each half-life, the amount of a radioactive substance decreases by 50%, a key principle for determining an object's age.
2.
FLASHCARD QUESTION
Front
Parent Isotope Noun
[pair-ent ahy-suh-tohp]
Back
Parent Isotope
A radioactive isotope that undergoes decay to form a more stable daughter isotope.
Example: This diagram shows an unstable Parent Nucleus (the parent isotope) breaking down into a more stable Daughter Nucleus and an alpha particle.
3.
FLASHCARD QUESTION
Front
Daughter Isotope Noun
[daw-ter ahy-suh-tohp]
Back
Daughter Isotope
The isotope that is the product of radioactive decay of a parent isotope.
Example: This diagram shows an unstable parent nucleus decaying into a new, more stable daughter nucleus by releasing a particle, a key process in radiometric dating.
4.
FLASHCARD QUESTION
Front
Half-life Noun
[haf-lahyf]
Back
Half-life
The time required for half of the radioactive atoms in a sample to decay.
Example: This graph shows that after each half-life period, the amount of a radioactive substance like carbon-14 decreases by exactly half.
5.
FLASHCARD QUESTION
Front
Carbon-14 Dating Noun
[kar-buhn fohr-teen day-ting]
Back
Carbon-14 Dating
A specific method of radiometric dating used for organic materials up to about 60,000 years old.
Example: This diagram shows that living organisms absorb Carbon-14. After death, the Carbon-14 decays at a known rate (its half-life), allowing scientists to determine a fossil's age.
6.
FLASHCARD QUESTION
Front
Cosmic Rays Noun
[koz-mik reyz]
Back
Cosmic Rays
High-energy radiation originating from outside the solar system, which can create C-14 in the atmosphere.
Example: High-energy particles, called cosmic rays, are created by events like supernovas and travel through space at nearly the speed of light.
7.
FLASHCARD QUESTION
Front
Beta Decay Noun
[bey-tuh di-key]
Back
Beta Decay
A type of radioactive decay in which a beta particle is emitted from an atomic nucleus.
Example: This diagram shows a Carbon-14 atom undergoing beta decay, where one of its neutrons turns into a proton, changing it into a Nitrogen-14 atom.
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