The Age of the Earth

Flashcard
•
Science
•
6th - 10th Grade
•
Hard
Standards-aligned
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15 questions
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1.
FLASHCARD QUESTION
Front
What is radioactive decay?
Back
Radioactive decay is the process by which unstable atomic nuclei lose energy by emitting radiation, transforming from parent isotopes into daughter isotopes.
Tags
NGSS.HS-PS1-8
2.
FLASHCARD QUESTION
Front
What determines the identity of an element?
Back
The identity of an element is determined by the number of protons in its nucleus.
3.
FLASHCARD QUESTION
Front
Which radioactive isotope has the longest half-life?
Back
Rubidium-87 has the longest half-life among common radioactive isotopes.
Tags
NGSS.HS-PS1-8
4.
FLASHCARD QUESTION
Front
What role do neutrons play in an atom?
Back
Neutrons help to hold the nucleus of an atom together by providing nuclear stability.
Tags
NGSS.HS-PS1-8
5.
FLASHCARD QUESTION
Front
What is the estimated age of meteorites, which is thought to be the age of most solar system objects?
Back
Meteorites are estimated to be about 4.55 billion years old.
Tags
NGSS.HS-ESS1-6
6.
FLASHCARD QUESTION
Front
What is a half-life?
Back
A half-life is the time required for half of the radioactive atoms in a sample to decay into daughter isotopes.
Tags
NGSS.HS-PS1-8
7.
FLASHCARD QUESTION
Front
What are daughter isotopes?
Back
Daughter isotopes are the products formed when a parent isotope undergoes radioactive decay.
Tags
NGSS.HS-PS1-8
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