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Science Bowl Question

📅 NSB 2019🎓 HS🔄 Round 17#️⃣ Q1🌟 BONUS📝 Multiple Choice

Which of the following assumptions is typically made when performing potassium-argon dating?

W) Potassium-40 only decays into argon-40
X) Some percentage of argon-40 produced by decay leaks out of the rock
Y) Potassium-40 has a half-life of 1.3 million years
Z) All argon-40 in a rock was produced by potassium-40 decay
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