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Geological Time
Test Description: Chapters 12 and 13
Instructions: Answer all questions to get your test result.
1) Sedimentary rocks record past geological events and
A
astronomical milestones of the past
B
Earth\'s circumference and diameter in the past
C
written history
D
changing life forms of the past
2) In what type of rocks would geologosts most likely find evidence of past life forms
A
metamorphic rock
B
volcanic rock
C
sedimentary rock
D
igneous rock
3) The geological processes that shape the Earth\'s features today
A
did not operatre in the distant past
B
became important only several hundred years ago
C
are basically the same as they were in the geological past
D
are much different than thousands of years ago
4) According to the principle of cross cutting relationships, and instrusive rock body is
A
older than the rocks into which it intrudes
B
always made of the same materials as rock around it
C
deposited as sedimentary layers
D
younger than the rocks into which it intrudes
5) The dating process that places geological events in proper sequence is referred to as
A
relative dating
B
temporary dating
C
numerical dating
D
radiometric dating
6) What type of unconformity consists of tilted sedimentary rocks that are over layed by younger, more flat lying sedimentary rocks?
A
nonconformity
B
angular unconformity
C
disconformity
D
conformity
7) Fossils are the
A
living creatures with habitats in or around rock
B
remains or traces of prehistoric life
C
objects that people left behind as artifacts
D
oldest rock layers in a region
8) Assume you began with 10 g or a radioactive parent isotope. Home many grames of parent isotope will be present in the sample after 2 half lives?
A
0.63 g
B
1.25 g
C
2.5 g
D
5 g
9) Which two substances do geologist use in radio carbon dating?
A
carbon 12 and carbon 10
B
carbon 12 and carbon 14
C
lead 206 and carbon 14
D
carbon 14 and uranium 238
10) What is the currently accepted age of the Earth?
A
approximately 4.6 million years
B
approximately 4.6 billion years
C
approximately 5.6 billion years
D
approximately 10 billion years
*select an answer for all questions
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