An Introduction to Physical Science
14th Edition
ISBN: 9781305079137
Author: James Shipman, Jerry D. Wilson, Charles A. Higgins, Omar Torres
Publisher: Cengage Learning
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Chapter 24, Problem 18MC
To determine
The era in which dinosaurs were common.
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Which of the following is least reasonable regarding the extinction of the dinosaurs?
Group of answer choices
Scientists originally believed that the Chicxulub crater was caused by a nuclear blast since the impact residue (e.g., melted bedrock, tektites, shocked quartz, etc.) discovered there was very similar to that found around nuclear test sites.
According to a well-established hypothesis, a meteor the size of a mountain slammed into Earth about 65 million years ago, filling the atmosphere with gas, dust, and debris that drastically altered the climate.
One key piece of evidence is a very high level of iridium in a layer of Earth, with lots of dinosaur fossils below but none above.
A huge impact crater linked to the impact event was found around coast of Mexico’s Yucatán Peninsula.
Although the impact occurred in the Gulf of Mexico, meteorite debris from the 'dinosaur rock' was discovered all over the world.
Approximately how old is a fossil that contains 1.5g of C14 and 198.5g of C12? Remember that C14 decays to C12 with a half life of 6,000 years.
A fossilized leaf contains 70% Of its normal amount of carbon- 14. How old is the fossil? Use 5730 yesrs as the half-life of carbon- 14.
Chapter 24 Solutions
An Introduction to Physical Science
Ch. 24.1 - Are dinosaur footprints fossils?Ch. 24.1 - Prob. 2PQCh. 24.2 - Prob. 1PQCh. 24.2 - Prob. 2PQCh. 24.2 - Prob. 24.1CECh. 24.2 - Prob. 24.2CECh. 24.3 - Prob. 1PQCh. 24.3 - Prob. 2PQCh. 24.3 - Prob. 24.3CECh. 24.4 - Prob. 1PQ
Ch. 24.4 - Prob. 2PQCh. 24.5 - Prob. 1PQCh. 24.5 - Prob. 2PQCh. 24.5 - Prob. 24.4CECh. 24 - KEY TERMS 1. geologic time (Intro) 2. fossil...Ch. 24 - KEY TERMS 1. geologic time (Intro) 2. fossil...Ch. 24 - Prob. CMCh. 24 - Prob. DMCh. 24 - Prob. EMCh. 24 - Prob. FMCh. 24 - Prob. GMCh. 24 - Prob. HMCh. 24 - Prob. IMCh. 24 - Prob. JMCh. 24 - Prob. KMCh. 24 - Prob. LMCh. 24 - Prob. MMCh. 24 - Prob. NMCh. 24 - Prob. OMCh. 24 - Prob. PMCh. 24 - Prob. QMCh. 24 - Prob. RMCh. 24 - Prob. SMCh. 24 - Prob. TMCh. 24 - Prob. UMCh. 24 - Prob. VMCh. 24 - Prob. WMCh. 24 - Prob. XMCh. 24 - Prob. ZMCh. 24 - Prob. 1MCCh. 24 - Prob. 2MCCh. 24 - Prob. 3MCCh. 24 - What is the name for the type of fossil formed...Ch. 24 - Prob. 5MCCh. 24 - What is obtained when rocks and geologic events...Ch. 24 - Prob. 7MCCh. 24 - Prob. 8MCCh. 24 - Prob. 9MCCh. 24 - Prob. 10MCCh. 24 - If the half-life of a radioactive specimen is 100...Ch. 24 - Prob. 12MCCh. 24 - Prob. 13MCCh. 24 - Prob. 14MCCh. 24 - Prob. 15MCCh. 24 - Prob. 16MCCh. 24 - Prob. 17MCCh. 24 - Prob. 18MCCh. 24 - Prob. 19MCCh. 24 - Prob. 20MCCh. 24 - Prob. 1FIBCh. 24 - Prob. 2FIBCh. 24 - Prob. 3FIBCh. 24 - Prob. 4FIBCh. 24 - Prob. 5FIBCh. 24 - Prob. 6FIBCh. 24 - Prob. 7FIBCh. 24 - Prob. 8FIBCh. 24 - Prob. 9FIBCh. 24 - Prob. 10FIBCh. 24 - Prob. 11FIBCh. 24 - Prob. 12FIBCh. 24 - Prob. 13FIBCh. 24 - Prob. 14FIBCh. 24 - Prob. 15FIBCh. 24 - Prob. 16FIBCh. 24 - Prob. 17FIBCh. 24 - Prob. 18FIBCh. 24 - Prob. 19FIBCh. 24 - Prob. 20FIBCh. 24 - What is meant by the phrase geologic time?Ch. 24 - Why are so few fossils of worms found?Ch. 24 - Prob. 3SACh. 24 - Prob. 4SACh. 24 - Prob. 5SACh. 24 - Prob. 6SACh. 24 - Prob. 7SACh. 24 - Prob. 8SACh. 24 - How do fossils aid in oil exploration?Ch. 24 - Prob. 10SACh. 24 - How might the principle of superposition be...Ch. 24 - Prob. 12SACh. 24 - Prob. 13SACh. 24 - Prob. 14SACh. 24 - Prob. 15SACh. 24 - Prob. 16SACh. 24 - What four features characterize the best index...Ch. 24 - Prob. 18SACh. 24 - Prob. 19SACh. 24 - Prob. 20SACh. 24 - Prob. 21SACh. 24 - Prob. 22SACh. 24 - Prob. 23SACh. 24 - Prob. 24SACh. 24 - Prob. 25SACh. 24 - Prob. 26SACh. 24 - Carbon-14 dating measures the ratio of carbon-14...Ch. 24 - What are the three conditions for using an isotope...Ch. 24 - Distinguish between primordial lead and radiogenic...Ch. 24 - Prob. 30SACh. 24 - Prob. 31SACh. 24 - Prob. 32SACh. 24 - Prob. 33SACh. 24 - Prob. 34SACh. 24 - Prob. 35SACh. 24 - Prob. 36SACh. 24 - Prob. 37SACh. 24 - Prob. 38SACh. 24 - What biologic event is used by geologists to...Ch. 24 - What is the biological event that started the...Ch. 24 - Prob. 41SACh. 24 - Prob. 42SACh. 24 - Prob. 43SACh. 24 - In what period and era were the great coal-forming...Ch. 24 - About how many days on the geologic time calendar...Ch. 24 - Prob. 1VCCh. 24 - What are the strengths and weaknesses of the...Ch. 24 - Prob. 2AYKCh. 24 - Prob. 3AYKCh. 24 - Prob. 4AYKCh. 24 - Prob. 5AYKCh. 24 - Prob. 1ECh. 24 - Prob. 2ECh. 24 - Figure 24.21 Relative Dating See Exercises 3 and...Ch. 24 - Figure 24.21 Relative Dating See Exercises 3 and...Ch. 24 - Metamorphic rock shows that only 25% of its...Ch. 24 - Prob. 6ECh. 24 - Prob. 7ECh. 24 - Suppose that one species of index fossil lived...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.Similar questions
- Are dinosaur footprints fossils?arrow_forwardSuppose that one species of index fossil lived between 410 and 380 mya and another lived between 440 and 350 mya. What can be said about the age of a rock that contains fossils of both species? Figure 24.22 Absolute Dating of Sedimentary Rocks See Exercise 7.arrow_forwardThe diagram below shows the layers of rock having an ammonite: Which statement about the rock fossils is true? (4 points) a Fossil Y is older than fossil X. b Fossil Z is younger than fossil Y. c Fossil Z existed over many periods of time. d Fossil Y existed during the same period as the ammonite.arrow_forward
- KEY TERMS 1. geologic time (Intro) 2. fossil (24.1) 3. paleontology 4. amber 5. replacement fossil 6. mold 7. cast 8. trace fossil 9. relative geologic time (24.2) 10. principle of original horizontality 11. principle of superposition 12. principle of cross-cutting relationships 13. unconformities 14. correlation 15. index fossils 16. eons 17. eras 18. periods 19. absolute (numerical) geologic time (24.3) 20. radiometric dating 21. carbon-14 dating 22. geologic time scale (24.5) 23. Cambrian explosion 24. Great Dying 25. epochs 26. K-T event For each of the following items, fill in the number of the appropriate Key Term from the preceding list. a. _____ Widespread, easily identified fossils that are typical of a particular time segment of the Earths historyarrow_forwardKEY TERMS 1. geologic time (Intro) 2. fossil (24.1) 3. paleontology 4. amber 5. replacement fossil 6. mold 7. cast 8. trace fossil 9. relative geologic time (24.2) 10. principle of original horizontality 11. principle of superposition 12. principle of cross-cutting relationships 13. unconformities 14. correlation 15. index fossils 16. eons 17. eras 18. periods 19. absolute (numerical) geologic time (24.3) 20. radiometric dating 21. carbon-14 dating 22. geologic time scale (24.5) 23. Cambrian explosion 24. Great Dying 25. epochs 26. K-T event For each of the following items, fill in the number of the appropriate Key Term from the preceding list. b. _____ The most devastating extinction that has ever occurredarrow_forwardWhat is the biological event that started the Paleozoic era called?arrow_forward
- You want to use radiometric dating to determine the age of a specimen. You use Isotope Z, which has a half-life of 645 years. You measure your sample and find that 1/16 of the original amount of Isotope Z is present. How old is the sample?arrow_forward3. The Duggs find the skeleton of a Zillow beast and wish to carbon date it. If the half life of Carbon-14 is 5700 years, and we measure 60% of the original carbon, how old is the Zillow beast fossil?arrow_forwardWhat describes using organisms that were only alive during a specific time period to estimate the unknown age of items? a. Radioactive dating Selected:b. Law of superposition This answer is incorrect. c. Relative dating d. Index fossilsarrow_forward
- 5. The diplodocus dinosaur is believed to have become extinct approximately 1.38x10° years ago. The oviraptor is believed to have become extinct approximately 7x10' years ago. How many years were there between the extinction of these two dinosaur types?arrow_forwardWhat biologic event is used by geologists to separate the Tertiary period from the Quaternary period?arrow_forwardWhat is obtained when rocks and geologic events are put into chronologic order without regard to the actual dates? (24.2) (a) absolute (numerical) geologic time (b) relative geologic time (c) a geologic formation (d) a correlation periodarrow_forward
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