Final answer:
Radiocarbon dating and K-Ar dating are two different methods used to determine the age of objects. Radiocarbon dating uses the decay of carbon-14 isotopes to estimate the age of organic materials, while K-Ar dating uses the decay of potassium-40 isotopes to estimate the age of rocks and minerals.
Step-by-step explanation:
Radiocarbon dating and K-Ar dating are two different methods used to determine the age of objects. Radiocarbon dating, also known as carbon-14 dating, uses the decay of carbon-14 isotopes to estimate the age of organic materials. It is often used to determine the age of artifacts or fossils up to 50,000 years old. On the other hand, K-Ar dating, or potassium-argon dating, uses the decay of potassium-40 isotopes to estimate the age of rocks and minerals, with a much longer timescale reaching billions of years.