) The contained assemblage of fosils can determine goologie ages o strala s the
ID: 291530 • Letter: #
Question
) The contained assemblage of fosils can determine goologie ages o strala s the idea or concept that ancient life forms succoeded each other in a definite, evolutionary pallers and that the B) law of fossil regression C) law of eorrelstive indexing D) principle of fosil saccesion 9 Faunal sucsion rcognined in the squenoe of fossls in stresifiod A) the concept of evolution of life on Earth rocks was a key coeoept that led t was a B) continental drit C) sce floce spreading D) Catastrophism and evidence the world was once coverod with 30) Which of the following is an cssential characteristic of an index fossil? A) The organism lived only in specific eevironments such as beaches or estuaries B)The organism only lived for ashort period of gookgo tas C) The fossils are exceptionaly abundant and well preserved D) The fossils oocur in decp-water marine sediments, but the organism actually lived in the sunlit, surface layer of the ooeen in some minerals because these minerals can the He comes from that allows this technique 31) In the last 20 years goologists have begun messaring accumulation of Helium (e) retain He at temperatures pp 100-200°C. The "date" gives a time when the material oooled below the temperature began to be retained, which is related to the depth of the material. Where do you think where the heliun to work? A) the atmospbere, like carbon-14 C) beta decay of some radioactive element B) the sun D) alpha docay of some radioactive element 32) What is the age of the Earth acoepled by most scientists today? A)64 billion yers B) 4.5 million years C) 45 billion years D) 64 million years 33) The subdivision of the goologic time scale that represents the loagest time span is called atn) A) epoch B) era C) period D) con 34) The ara of "ancient life" is the-era A) Cenozoic C) Mesozoic B) Paloozoe D) Precambrian 35) About 88 percent of geologie time is represented by the time span called the A) Cenozoic C) Mesozoic B) Paleozoic 36) Which of the following denotes the divisions of the goolopic time scale in correct order of docreasing lengths of time beginning with the longest time interval and ending with the shortest? A) con, era, epoch, period C) eoe, epoch, period, ra B) era, period, epoch, con D) con, era, period, epoch 37) The era known as the "age of mammals is the era A) Cenozoic C) Mesozoic B) Paloozoec D) Precambrian 38) Which method best describes how the goologic time scale, which was developed through fossil successions in sedimentary rocks, was tied to absolute time even thouph sedimentary rocks cannot usually be datod directly by goochronology? A) Geologists estimated time through sedimentation rates, then using those rates together with maxcimoum ages of underlying rocks that are datablc, lo extract a time interval and rate for deposition of the sedimentary rocks B) Geologist used things lhike volcanic ash beds, interbedded volcanic rocks, cross-cutting intrusive igneous rocks, etc. in sedimentay sections with a known fossil succession, and this age was extrapolated globally C) Goologists recently developed a technique to diroctly date sedimentary rocks, solving the problem there were many other cosmogenic isotopes besides Cawrbon 14 that allow the dating of sediments, and this D) Goologists realized that has allowod the dating of sedimentary rocksExplanation / Answer
28] Option D is correct.
principle of fossil succession
29] Option A is correct.
the concept of evolution of life on Earth
30] Option B is correct
the organism only lived for a short period of geologic time
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