Review Questions<br />Chapter 8:  Relative Dating, Absolute Dating, Fossils<br />
This principle states that geologic processes are the same today as they were in the past but the RATES of the processes v...
This branch of Earth Science studies the history of the Earth<br />Earth Science<br />
What does a Paleontologist study?<br />Fossils<br />
When you determine whether an object or event is older or younger than other objects/events, you are finding the object’s ...
This law states that younger rocks lie above older rocks in undisturbed rock layers.<br />Superposition<br />
A break in the earth’s crust along which blocks of crust slide relative to one another<br />Fault<br />
Molten rock from Earth’s interior that squeezes into existing rock layers and cools<br />Intrusion<br />
This type of rock disturbance occurs when rock layers bend and buckle from Earth’s internal forces<br />Folding<br />
This disturbance occurs when internal forces in the earth slant rock layers without folding them<br />Tilting<br />
Hardened tree sap that sometimes has the preserved remains of insects<br />Amber<br />
The number of years an object has existed<br />Absolute Age<br />
Remains or traces of animals or plants that lived in past geologic times<br />Fossils<br />
This occurs when an organism’s tissues are completely replaced by minerals<br />Petrification<br />
Any naturally preserved evidence of an animal’s activity<br />Trace Fossil<br />
A type of trace fossil that is made from preserved animal feces or dung & can provide information about the habits/diet of...
An empty space/cavity in rock where a plant or animal was buried<br />Mold<br />
A replica of an object that is created when sediment fills a mold and becomes rock<br />Cast<br />
The boundary between a set of tilted rock layers and a set of horizontal layers<br />Angular Unconformity<br />
Atoms of the same element that have different numbers of neutrons<br />Isotopes<br />
Fossils of organisms that lived during a short, well-defined time span and are only found in rock layers of a particular g...
The earth’s age, according to geologists<br />4.6 Billion years old<br />
The law that states that faults/intrusions are always younger than the rock layers they cut through<br />Law of Crosscutti...
Saying one rock is older or younger than another rock but not saying its age in years<br />Relative Age<br />
Principle that states that sedimentary rocks left undisturbed will remain in horizontal layers<br />Principle of Original ...
A break in the geologic rock record<br />Unconformity<br />
List 3 methods of absolute dating besides Radiometric Dating<br />Rates of Erosion<br />Rates of Deposition<br />Varve Cou...
List two reasons Radiometric Dating is the most accurate method<br />Doesn’t depend on Environment<br />Rates don’t vary o...
The original radioactive isotope<br />Parent Isotope<br />
The newly formed, more stable isotope that forms during radioactive decay<br />Daughter Isotope<br />
The time it takes for ½ the mass of parent isotope to decay into its daughter isotope<br />Half Life<br />
If you have 16 g of radioactive parent isotope, how much parent/daughter isotope will you have after 3 half lives?<br />2 ...
This parent isotope decays into Lead-206, has a half life of 4.5 billion years, and is used to date rock that is really ol...
This parent isotope decays into Nitrogen-14, has a half life of 5,730 years, and is used to date rock that is relatively y...
Sue was found in this state<br />South Dakota<br />
Sue was the most _______ T.rex ever found<br />Complete<br />
WHO was Sue the T.rex named after?<br />The woman who found her<br />
Who bought Sue and for how much?<br />Chicago’s Field Museum<br />$8 Million<br />
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Test Review 12/8

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Review Questions from class on Tuesday, December 8th.

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Transcript of "Test Review 12/8"

  1. 1. Review Questions<br />Chapter 8: Relative Dating, Absolute Dating, Fossils<br />
  2. 2. This principle states that geologic processes are the same today as they were in the past but the RATES of the processes vary over time<br />Uniformitarianism<br />
  3. 3. This branch of Earth Science studies the history of the Earth<br />Earth Science<br />
  4. 4. What does a Paleontologist study?<br />Fossils<br />
  5. 5. When you determine whether an object or event is older or younger than other objects/events, you are finding the object’s ___________ Age.<br />Relative<br />
  6. 6. This law states that younger rocks lie above older rocks in undisturbed rock layers.<br />Superposition<br />
  7. 7. A break in the earth’s crust along which blocks of crust slide relative to one another<br />Fault<br />
  8. 8. Molten rock from Earth’s interior that squeezes into existing rock layers and cools<br />Intrusion<br />
  9. 9. This type of rock disturbance occurs when rock layers bend and buckle from Earth’s internal forces<br />Folding<br />
  10. 10. This disturbance occurs when internal forces in the earth slant rock layers without folding them<br />Tilting<br />
  11. 11. Hardened tree sap that sometimes has the preserved remains of insects<br />Amber<br />
  12. 12. The number of years an object has existed<br />Absolute Age<br />
  13. 13. Remains or traces of animals or plants that lived in past geologic times<br />Fossils<br />
  14. 14. This occurs when an organism’s tissues are completely replaced by minerals<br />Petrification<br />
  15. 15. Any naturally preserved evidence of an animal’s activity<br />Trace Fossil<br />
  16. 16. A type of trace fossil that is made from preserved animal feces or dung & can provide information about the habits/diet of animals that left them<br />Coprolite<br />
  17. 17. An empty space/cavity in rock where a plant or animal was buried<br />Mold<br />
  18. 18. A replica of an object that is created when sediment fills a mold and becomes rock<br />Cast<br />
  19. 19. The boundary between a set of tilted rock layers and a set of horizontal layers<br />Angular Unconformity<br />
  20. 20. Atoms of the same element that have different numbers of neutrons<br />Isotopes<br />
  21. 21. Fossils of organisms that lived during a short, well-defined time span and are only found in rock layers of a particular geologic age<br />Index Fossils<br />
  22. 22. The earth’s age, according to geologists<br />4.6 Billion years old<br />
  23. 23. The law that states that faults/intrusions are always younger than the rock layers they cut through<br />Law of Crosscutting Relationships<br />
  24. 24. Saying one rock is older or younger than another rock but not saying its age in years<br />Relative Age<br />
  25. 25. Principle that states that sedimentary rocks left undisturbed will remain in horizontal layers<br />Principle of Original Horizontality<br />
  26. 26. A break in the geologic rock record<br />Unconformity<br />
  27. 27. List 3 methods of absolute dating besides Radiometric Dating<br />Rates of Erosion<br />Rates of Deposition<br />Varve Count<br />
  28. 28. List two reasons Radiometric Dating is the most accurate method<br />Doesn’t depend on Environment<br />Rates don’t vary over time<br />
  29. 29. The original radioactive isotope<br />Parent Isotope<br />
  30. 30. The newly formed, more stable isotope that forms during radioactive decay<br />Daughter Isotope<br />
  31. 31. The time it takes for ½ the mass of parent isotope to decay into its daughter isotope<br />Half Life<br />
  32. 32. If you have 16 g of radioactive parent isotope, how much parent/daughter isotope will you have after 3 half lives?<br />2 g of Parent<br />14 g of Daughter<br />
  33. 33. This parent isotope decays into Lead-206, has a half life of 4.5 billion years, and is used to date rock that is really old<br />Uranium 238<br />
  34. 34. This parent isotope decays into Nitrogen-14, has a half life of 5,730 years, and is used to date rock that is relatively young<br />Carbon-14<br />
  35. 35. Sue was found in this state<br />South Dakota<br />
  36. 36. Sue was the most _______ T.rex ever found<br />Complete<br />
  37. 37. WHO was Sue the T.rex named after?<br />The woman who found her<br />
  38. 38. Who bought Sue and for how much?<br />Chicago’s Field Museum<br />$8 Million<br />
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