Vocab pg 70

Question 1

Absolute Dating

Answer 1

Any method of measuring the age of an event or object in years

Question 2

Isotope

Answer 2

Atom that has the same number of protons as the other atoms of the same element do but that has a different number of neutrons

Question 3

Radioactive Decay

Answer 3

Process in which a radioactive isotope tends to break down into a stable isotope of the same or other element

Question 4

Radiometric Dating

Answer 4

Method of determining the age of an object by estimating the relative percentages of a radioactive isotope and a stable isotope

Question 5

Half- Life

Answer 5

Time needed for half of a sample of a radioactive substance to undergo radioactive decay