If a Rock Started with 1,000 Atoms of a Parent

question 33

Multiple Choice

If a rock started with 1,000 atoms of a parent but now contains 250 atoms,how many half-lives have passed?

• A)0.25 half-lives
• B)0.5 half-lives
• C)2 half-lives
• D)4 half-lives
• E)There is no way to tell.

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Definitions:

Arrays

Data structures that store multiple elements of the same type in an indexed collection.

Vectors

A class in Java that implements a growable array of objects, providing methods to manipulate the size and contents of the array.

Stream Classes

Classes in Java that are part of the java.io package, used for reading and writing to files or other input and output streams.