If Three Samples Have the Half-Lives Listed Below,which Sample Would

question 29

Multiple Choice

If three samples have the half-lives listed below,which sample would remain radioactive the longest?

• A)a sample with a half-life of 20 minutes
• B)a sample with a half-life of 20 hours
• C)a sample with a half-life of 20 years
• D)a sample with a half-life of 20 million years
• E)none of the above

---

Definitions:

A Car

A motor vehicle designed primarily for passenger transportation.

A House

A building for human habitation, typically consisting of multiple rooms and other spaces.

Trespasser

An individual who enters someone's property without permission or legal right.

Electric Meter

A device that measures the amount of electrical energy consumed by a residence, business, or an electrically powered device.