Makeup Work: Radiometric Dating Reading
Passage
•
Science
•
9th - 12th Grade
•
Practice Problem
•
Easy
Mx Stockburger
Used 1+ times
FREE Resource
5 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why is Carbon-14 rarely used to date dinosaur fossils or early hominids like "Lucy"?
A. Carbon-14 is only found in igneous rocks, not bones.
B. The half-life of Carbon-14 is too short to reach back millions of years.
C. Carbon-14 turns into Lead, which is toxic to the fossils
D. Scientists prefer relative dating for all biological matter.
2.
OPEN ENDED QUESTION
3 mins • 1 pt
Explain the "bracketing" technique used to date the fossil "Lucy." Why was this method necessary?
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3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following statements best describes a "half-life"?
A. The time it takes for a rock to erode to half its size.
B. The time it takes for a radioactive isotope to lose all its radioactivity.
C. The time required for 50% of the parent isotope to decay into the daughter isotope.
D. The time it takes for a fossil to fully mineralize in sedimentary rock
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Clair Patterson determined the age of the Earth to be 4.55 billion years by analyzing which object?
A. The Jack Hills Zircons
B. Volcanic ash from Ethiopia
C. The Canyon Diablo meteorite
D. Deep-sea sedimentary layers
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
a rock sample contains a ratio of 50% Uranium (Parent) and 50% Lead (Daughter). Based on the text, would this sample likely be older or younger than a sample with 25% Uranium and 75% Lead?
OLDER
YOUNGER
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