Activity And Half-Life Flashcards
1
Q
The Activity of a Radioactive Source is the Number of Unstable Atoms in the Source that ________ Per Second.
A
Decay.
2
Q
What is the Count Rate?
A
The Number of Counts Per Second. This is Proportional to the Activity of the Source.
3
Q
The Average Time Taken for the Count Fate to ______ by Half is Always the Same. This is Known as Half ______.
A
Fall…Life…
4
Q
The Half-Life of a Radioactive Isotope is the Average Time it Takes for the:
A
- Number of Nuclei of the Isotope in the Sample to Halve.
- Count Rate From the Isotope in a Sample to Fall to Half its Initial Value.
5
Q
Radioactive Decay is a __________ Process.
A
Random.
