17.3- Absolute Age Dating

Question 1

Absolute Age Dating

Answer 1

method that enables scientists to determine the numeric age of rocks and other objects
use a variety of methods

Question 2

Radioactive Decay

Answer 2

emission of radioactive particles and its resulting change into other isotopes over time

Question 3

Parent Isotope

Answer 3

the original radioactive isotope of an element that undergoes radioactive decay

Question 4

Daughter Isotope

Answer 4

the newly formed element produced as a result from radioactive decay

Question 5

Radiometric Dating

Answer 5

a method of determining the absolute age of an object by comparing the relative percentages of a radioactive (parent) isotope and a stable (daughter) isotope

Question 6

Half-Life

Answer 6

the time required for half of a sample of a radioactive isotope to break down by radioactive decay to form a daughter isotope

Question 7

The greater the percentages of ______________ the ___________ the rock is

Answer 7

daughter isotopes, older

Question 8

Radiocarbon Dating

Answer 8

determines the age of relatively young organic objects

Question 9

3 methods to determine absolute age

Answer 9

1) Tree Rings
2) Ice Cores
3) Varves