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ConcepTest: Spreading Rate of Spreading Center part of Examples
Scientists collect rock samples of the oceanic crust from a location that is 10 km from a spreading center. (1 km = 1000 m; 1 m = 100 cm; 1 cm = 10 mm.) The sampled rocks were found to be 200,000 years old. What ...

ConcepTest: Cross Section Explaination part of Examples
During fieldwork in the western U.S., an experienced geologist sketched the cross section below showing three different units of tilted rocks and their relative ages. What could you best infer from this diagram? a. ...

ConcepTest: Unconformity Explaination part of Examples
Which of the following sequence of events would best explain what happened between deposition of layers C and E illustrated in the diagram below? a. Uplift only. b. Uplift, erosion, then sea level rise. c. Uplift ...

ConcepTest: Relative Layer Age #37 part of Examples
Examine the image of rock layers below. Which letter represents the rock unit that was formed most recently? Image courtesy of USGS a. A b. B c. C

ConcepTest: Relative Layer Age #38 part of Examples
Examine the image of rock layers below. Which sequence of letters best represents the order in which the rock units were formed (from oldest to youngest)? Image courtesy of USGS a. B, A, C b. C, B, A c. B, C, A d. ...

ConcepTest: Relative Layer Age #39 part of Examples
What principle would be the best to apply to determine the relative order in which rock units A and B in the image below were formed? Image courtesy of USGS a. Original horizontality b. Cross-cutting relationships ...

ConcepTest: Angluar Unconformity Sequence of Events part of Examples
The diagram below shows rock units with their age in millions of years. When did crustal deformation (uplift or mountain building) occur? a. less than 60 million years ago b. more than 200 million years ago c. ...

ConcepTest: Deformation Sequence of Events part of Examples
The diagram below shows rock units with their age in millions of years. When did deformation (uplift or mountain building) occur? a. less than 60 million years ago b. more than 200 million years ago c. between ...

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 ...

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