Asked by Mashudu Daniel Rambau on May 16, 2024
Verified
If a rock started with 1,000 atoms of a parent but now contains 250 atoms, how many half lives have passed?
A) .25 half lives
B) .5 half lives
C) 1 half life
D) 2 half lives
E) there is no way to tell
Half Lives
The time required for a quantity to reduce to half its initial value, commonly used in reference to radioactive decay.
Parent Atoms
The original atoms that undergo radioactive decay, transforming into different daughter atoms as a result of the process.
- Comprehend the principle of half-lives and the methodologies involved in radiometric dating.
Verified Answer
DD
Dariah DanielsMay 20, 2024
Final Answer :
D
Explanation :
With each half-life, the amount of the parent atoms halves. Starting with 1,000 atoms and ending with 250 means it has halved twice (1,000 to 500 to 250), indicating 2 half-lives have passed.
Learning Objectives
- Comprehend the principle of half-lives and the methodologies involved in radiometric dating.