
Geologic Time
Quiz
•
Science
•
10th Grade
•
Practice Problem
•
Hard
+4
Standards-aligned
Salvatore Badali
Used 26+ times
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29 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which number best represents when humans are inferred to have first appeared on Earth?
1
2
3
4
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Based on the graph, what is the approximate number of radioactive atoms of Isotope X that are present when 8 hours of decay have occurred?
50
100
155
200
Tags
NGSS.HS-PS1-8
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Based on the graph, the half-life of this radioactive isotope is
6 hours
9 hours
3 hours
12 hours
Tags
NGSS.HS-PS1-8
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The solid black sections of the bars on the graph represent the percentages of
carbon-14 from the original sample that has not decayed
uranium-238 from the original sample that has not decayed
lead-206 decay product resulting from the radioactive decay
carbon-14 decay product resulting from the radioactive decay
Tags
NGSS.HS-PS1-8
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
After 22,800 years, approximately what percentage of the original carbon-14 remains?
15%
6.25%
12.5%
3.125%
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A fossil formed 11,400 years ago. Which percentage of the original amount of carbon-14 remains in the fossil?
100%
50%
25%
12.5%
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The major source of oxygen in Earth's early Proterozoic atmosphere is inferred to have been produced by
oceanic cyanobacteria
outgassing from volcanic eruptions
radioactive decay in Earth's inner core
evaporation of ocean water
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