9 - Chapter Quiz for "Chapter 9 - Geologic Time" Scores for...

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Chapter Quiz for "Chapter 9 - Geologic Time"Scores for student "9"22 out of 25 points.88.0%1.Which one of the following is NOT a type of radioactive decay?+ Correct: neutron capture2.In the geologic time scale, era names represent important differences in__________.+ Correct: dominant life-forms3.On the geologic time scale, __________ represent the greatest expanses oftime.+ Correct: eons4.After the third half-life, the fraction of the original radioactive atomsremaining will be __________.+ Correct: one-eighth5.Each era is divided into smaller units called __________, which may befurther divided into __________.+ Correct: periods; epochs6.Earth is approximately __________ years old.+ Correct: 4.5 billion7.Atoms which have the same atomic numbers, but different mass numbers, arereferred to as __________.+ Correct: isotopes8.Isotopes of the same atom will have different numbers of __________.+ Correct: neutrons9.Breaks or gaps in the rock record in which strata on both sides of theunconformity are parallel is:+ Correct: a disconformity10.

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