Use the radioactive decay curves, Figure 10.22, on page 179, to answer. If 93.75% of parent radioactive atoms have become stable daughter atoms, and the half-life is 25 thousand years; the rock is

Applications and Investigations in Earth Science (9th Edition)
9th Edition
ISBN:9780134746241
Author:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Publisher:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Chapter1: The Study Of Minerals
Section: Chapter Questions
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Question
32
Parent atoms remaining
100
94 atoms
87 atoms
80
75 atoms
60
50 atoms
40
25 atoms
13 atoms
6 atoms
1
3
4
Number of half-lives
(Elapsed time)
A Figure 10.22 Idealized radioactive decay curves.
LO
20
Number of atoms (percent)
Transcribed Image Text:Parent atoms remaining 100 94 atoms 87 atoms 80 75 atoms 60 50 atoms 40 25 atoms 13 atoms 6 atoms 1 3 4 Number of half-lives (Elapsed time) A Figure 10.22 Idealized radioactive decay curves. LO 20 Number of atoms (percent)
Use the radioactive decay curves, Figure 10.22, on page 179, to
answer.
If 93.75% of parent radioactive atoms have become stable daughter
atoms, and the half-life is 25 thousand years; the rock is
O 100 thousand years old.
O 75 thousand years old.
O about 23 thousand years old.
O 25 thousand years old.
Transcribed Image Text:Use the radioactive decay curves, Figure 10.22, on page 179, to answer. If 93.75% of parent radioactive atoms have become stable daughter atoms, and the half-life is 25 thousand years; the rock is O 100 thousand years old. O 75 thousand years old. O about 23 thousand years old. O 25 thousand years old.
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