Radioactive Decay and Dating Methods

When Rubidium-87 undergoes radioactive decay, what is its daughter decay product?

• Neodymium-143

• Strontium-87

• Lead-206

• Argon-40

How long does it take for half of a sample of Uranium-238 to decay?

• 106 billion years

• 48.8 billion years

• 4.5 billion years

• 713 million years

Which type of material is datable using Potassium-40?

• Garnets and micas

• Uranium-bearing minerals

• Organic materials and glacial ice

• Potassium-bearing minerals, igneous or volcanic rock

What is the useful dating range for Carbon-14?

• 10 million - 4.6 billion years

• 100,000 - 4.6 billion years

• 100 - 70,000 years

• 5730 - 100,000 years