Geologic+Time+Web+Quest

Use the blue highlighted websites to discover the answers to the questions that follow. Answer the questions on your Geologic Time Web Quest Handout
 * __Geologic Time Web Quest __**

Geologic Time Scale 1. In order from oldest to the present, what are the three **eras** of the Phanerozoic Eon (from the end of the Precambrian Eon to the present) of geologic time? 2. In which **era** do we live? 3. During which **period** of that **era** were you born? 4. Which **era** is known as the "Age of Invertebrates (or Fishes)?" 5. Which **era** is known as the "Age of the Reptiles (or Dinosaurs)?" 6. Which **era** is known as the "Age of Mammals?" 7. During which **era** did the first humans develop? (Hint: humans are mammals) 8. Name the 12 **periods** of the Phanerozoic Eon on the Geologic Time Scale (shown on this web site), in order from the oldest to the present.

Paleozoic Era 9. When did the Paleozoic Era take place? 10. Where was Africa located during the Paleozoic Era? 11. Earth's greatest mass extinction (that we know about) took place at the end of the Paleozoic Era. What percent of Earth's species died off?

Mesozoic Era 12. Did cavemen live during the Mesozoic Era? When did they show up? 13. How was the climate at the North and South Poles different during the Mesozoic than it is today? 14. How did the Mesozoic end? List three hypotheses which may explain what happened at the end of the Mesozoic Era.

15. The three periods in the Mesozoic Era are the Cretaceous, Jurassic, and Triassic. Choose one to answer questions 16,17,18. Cretaceous Period [|Jurassic Period] Triassic Period 16. **When** did this period take place? 17. Name five living things from this period. (your list can include plants, animals, or a combination of both) 18. **Where** have fossils from this period been found? (localities)

Cenozoic Era 19. Identify the time period covered by the Cenozoic. 20. Describe has happened during the Cenozoic in terms of a. Continents b. Climate c. Animals d. Humanity

Precambrian Eon 21. About how much of Earth's history took place during the Precambrian Eon? 22. List the eras of the Precambrian Eon in order from the oldest. 23. During which era was the Earth covered with liquid rock? 24. What was the only life form that existed during the Archaean Era? 25. How did the atmosphere change during the Proterozoic Era and before the end of the Precambrian Eon?