The Origin & History of Life On Earth: Homework Help Chapter Exam

Exam Instructions:

Choose your answers to the questions and click 'Next' to see the next set of questions. You can skip questions if you would like and come back to them later with the yellow "Go To First Skipped Question" button. When you have completed the practice exam, a green submit button will appear. Click it to see your results. Good luck!

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Question 1 1. Which of the following theories best explains the mass extinction of the dinosaurs?

Question 2 2. What method is used to determine the specific age of a rock or fossil?

Question 3 3. What type of event separates the Paleozoic, Mesozoic, and Cenozoic eras from one another in the Phanerozoic eon?

Question 4 4. Scientists agree that Earth is about how old?

Question 5 5. Small, non-living droplets that can regulate their internal environments are best known as _____

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Question 6 6. What is the purpose of the device shown?

Question 7 7. Miller and Urey used all of the following substances to simulate Earth's early atmosphere EXCEPT _____.

Question 8 8. The time period in Earth's history that saw the greatest increase in both the number and diversity of species is the:

Question 9 9. On the Galapagos Islands, there are several species that are similar and resemble a common ancestor. Each island has a slightly different ecosystem. Which of the following best explains how these different species came to be?

Question 10 10. Which answer choice correctly orders the three major eons of Earth's history, from the oldest to the most recent?

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Question 11 11. What scientist is credited with the idea that early life on Earth formed through a series of reactions that made simple compounds gradually more complex?

Question 12 12. The Archean and Proterozoic eons are grouped together as the:

Question 13 13. Scientists have found fossils that show a sudden appearance of a new organism after a period of no change. Which form of evolutionary change best explains this?

Question 14 14. The idea that the earth is constantly changing and, therefore, life on earth is continually evolving is:

Question 15 15. Which term best describes change over time?

The Origin & History of Life On Earth: Homework Help Chapter Exam Instructions

Choose your answers to the questions and click 'Next' to see the next set of questions. You can skip questions if you would like and come back to them later with the yellow "Go To First Skipped Question" button. When you have completed the practice exam, a green submit button will appear. Click it to see your results. Good luck!

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