1) In our activity, the total number of dice rolled represents ... a) time b) decay nuclei 2) In our activity, the number of dices remaining represents ... a) decay nuclei b) undecay nuclei 3) In our activity, the number of dices removed represents ... a) decay nuclei b) undecay nuclei 4) What is radioactive decay? a) process by which an unstable atomic nucleus emitting radiation, and transforms into a different element or a more stable isotope. b) process by which an unstable atomic nucleus emitting radiation, that not spontaneous and predictable 5) What is the meaning that radioactive decay is a random process? a) Cannot predict which nucleus in sample will decay next b) Not affected by external factors 6) What is the meaning that radioactive decay is a spontaneous process? a) Not affected by external factors b) Constant probability that a nucleus will decay in a fixed period of time 7) What is carbon dating? a) method used to determine the age of organic materials by measuring the amount of carbon-14 they contain b) method used to determine the age of organic materials by measuring the amount of carbon-12 they contain 8) Why does carbon-14 dating become less accurate for older samples? a) The amount of carbon-14 increases, making it harder to measure. b) The amount of carbon-14 decreases, making it harder to measure. 9) What is the relationship between radioactive decay and nuclear reactions? a) They are unrelated processes. b) Radioactive decay is a type of nuclear reaction. 10) What are common misconceptions about radioactive decay? a) All radiation is harmful. b) Not all radioactive materials are dangerous or highly radioactive.

Radioactive Decay

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