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ConcepTest: Relative Time Diagram #3 part of Examples
Match the features in the relative time diagram below with the events described in the short sentence. Assume all rocks are sedimentary unless otherwise indicated. Which unit is composed of granite and older than ...

ConcepTest: Relative Time Diagram #1 part of Examples
Match the features in the relative time diagram below with the events described in the short sentence. Assume all rocks are sedimentary unless otherwise indicated. Which is the oldest rock unit? a. A b. B c. C d. D ...

ConcepTest: Relative Time Diagram #2 part of Examples
Match the features in the relative time diagram below with the events described in the short sentences. Assume all rocks are sedimentary unless otherwise indicated. Which unit was formed before A but after E? a. C ...

ConcepTest: Einsteinium Half-life part of Examples
The isotope Einsteinium-253 has a half-life of 20 days. If you began an experiment with an 80-gram sample of Einsteinium-253, how much would remain after 60 days? a. 60 grams b. 40 grams c. 20 grams d. 10 grams

ConcepTest: Relative Layer Age #42 part of Examples
Examine the image of rock layers below. Which letter is located on an unconformity surface? Image courtesy of USGS a. A b. B c. C d. D

ConcepTest: Mt. Everest Limestone part of Examples
The rock on top of Mt. Everest is a shallow marine limestone deposited 200 million years ago. What does this tell us about the geologic history of the Himalayas? a. 200 million years ago the Himalayas did not ...

ConcepTest: Relative Time Diagram #5 part of Examples
Assuming all rocks are sedimentary unless otherwise indicated, what is the possible age of F if A is 100 million years old and D is 70 million years old? a. 85 Myrs b. 170 Myrs c. 55 Myrs d. 110 Myrs

ConcepTest: Oldest Rock Dating #1 part of Examples
The world's oldest known rock is approximately 4 billion (4,000 million) years old. What are the approximate relative percentages of parent and daughter isotopes for Uranium-238 and Lead-206 (half-life = 4.5 ...

ConcepTest: Oldest Rocks part of Examples
Carefully examine the relative positions of the lettered arrows on the timeline below and estimate the ages represented by each arrow. Identify which letter corresponds most closely to the age of the oldest known ...

ConcepTest: Best Index Fossil part of Examples
Four outcrops of rock are examined in different locations of a state. The rock types and the fossils they contain are illustrated in the adjacent diagram. Which fossil would be the best choice to use as an index ...

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