AP Bio Insta-Review Topic 7.6*: Evidence of Evolution
Flashcard
•
Biology
•
9th - 12th Grade
•
Practice Problem
•
Hard
Wayground Content
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15 questions
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1.
FLASHCARD QUESTION
Front
What is a half-life?
Back
The time required for half of a sample of a radioactive substance to decay.
2.
FLASHCARD QUESTION
Front
How much of a 200 g sample is remaining after 5 half-lives?
Back
6.25 g.
3.
FLASHCARD QUESTION
Front
Which fossil is the oldest?
Back
Fossil Z.
4.
FLASHCARD QUESTION
Front
What fossil layer is the oldest?
Back
The deepest layer.
5.
FLASHCARD QUESTION
Front
What type of rock are fossils found in?
Back
Sedimentary rock.
6.
FLASHCARD QUESTION
Front
How many half-lives to get to 1/32 of the original amount?
Back
5 half-lives.
7.
FLASHCARD QUESTION
Front
What is the principle of superposition in geology?
Back
In undisturbed sedimentary rock layers, the oldest layers are at the bottom and the youngest are at the top.
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