Cuesta College, San Luis Obispo, CA
Astronomy 10 learning goal Q4.2
[Version 1]
[3.0 points.] Consider three samples (X)-(Z), with differing amounts of unstable isotopes, embedded gaseous decay products, and inert material (which is not involved in the radioactive decay process), schematically shown below.
Which one of the following choices best corresponds to the order of samples from youngest to oldest, as determined by radioactive dating?
(A) Youngest: X, Y, Z: oldest.
(B) Youngest: X, Z, Y: oldest.
(C) Youngest: Y, Z, X: oldest.
(D) Youngest: Y, X, Z: oldest.
(E) Youngest: Z, X, Y: oldest.
Correct answer: (B)
Student responses
Section 0135
(A) : 8 students
(B) : 16 students
(C) : 3 students
(D) : 2 students
(E) : 6 students
[Version 2]
[3.0 points.] Consider three samples (X)-(Z), with differing amounts of unstable isotopes, embedded gaseous decay products, and inert material (which is not involved in the radioactive decay process), schematically shown below.
Which one of the following choices best corresponds to the order of samples from youngest to oldest, as determined by radioactive dating?
(A) Youngest: X, Y, Z: oldest.
(B) Youngest: X, Z, Y: oldest.
(C) Youngest: Y, Z, X: oldest.
(D) Youngest: Y, X, Z: oldest.
(E) Youngest: Z, X, Y: oldest.
Correct answer: (E)
Student responses
Section 1073
(A) : 1 student
(B) : 5 students
(C) : 8 students
(D) : 6 students
(E) : 24 students
No comments:
Post a Comment