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