Radioactive Decay and Half-Life Quiz

What is the term used to describe the time it takes for half of the atoms in a sample to decay?

• Radioactive Period

• Decay Constant

• Half-Life

• Decay Rate

If you start with 100 dice and remove all the ones showing a six after each roll, what concept does this experiment illustrate?

• Random Sampling

• Probability Distribution

• Decay Rate

• Half-Life

In a decay curve for iodine-131, how often does the count rate halve?

• Every 32 days

• Every 4 days

• Every 8 days

• Every 16 days

What is the half-life of carbon-14, which is used in radiocarbon dating?

• 5730 years

• 1000 years

• 573 years

• 57300 years

Which radioactive isotope found in bananas has a half-life of just over 1 billion years?

• Iodine-131

• Carbon-14

• Potassium-40

• Strontium-90