Science 7 Unit 5
Quiz by Varsha Srinivasan
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9 questions
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- Q1Geologic time is divided into units based onall of thesefossils and rockstypes of life-forms living during certain periods of time.geologic changes20s
- Q2How many years of Earth's history do geologists study?6 billion4.6 billion6 million150 million20s
- Q3The principle that outlines how rocks lie in undisturbed sequences (oldest to youngest) is calledUniformitarianismLaw of SuperpositionCatastrophismRelative dating20s
- Q4As long as a sequence of rock layers is undisturbed, scientists know thatolder rocks have eroded away.younger rocks lie under older rocks.younger rocks lie above older rocks.older rocks lie above younger rocks.20s
- Q5What is the name for an organism preserved by geologic processes?castfossilsedimentmold20s
- Q6Most fossils are preserved inigneous rockicesedimentary rockasphalt20s
- Q7The remains of animals and plants preserved within Earth's rock layers that date back to certain short periods of geologic time aretrack fossilsmold fossilsindex fossilsamber fossils20s
- Q8Scientists date fossils found in sedimentary rock layers usingrelative datingcarbon 14 datingabsolute datingradioactive decay dating20s
- Q9Which of the following statements about the fossil record is true?The fossil record is complete.Organisms having hard body parts are rare in the fossil record.Organisms having soft body parts are well represented in the fossil record.Most organisms never become fossils.20s