Name:_____________________________________________ Grade:__________________________ Date:__________ Activity WebQuest Origin of Life Forms: How Life Started on Earth Directions: Please answer all questions in complete sentences. Some of the questions have sentence starters for you; finish those sentences with the correct information. 1. If we were to shorten the history of mankind into a single day, when would life on earth have occurred? 2. Our Earth was created out of the _________ and _________ present at the start of our solar system. 3. Rocks are made of _________. 4. What is the element that you add to an iPhone to make the battery last longer? 5. How did Earth change from its “black phase” to its “gray phase”? 6. Which rock became the foundation of our continents? _________ 7. How did water play an essential role in the origin of life? Sentence starter: Water played an essential role in the origin of life by... 8. What evidence does the structure of zircon crystals provide? 9. What did Darwin theorize was the way in which life on Earth began? 10. In Dr. Miller’s experiment, the spark was to simulate lightning. What did lightning do to the gas molecules in Earth’s early atmosphere? 11. What are the ingredients for life that were formed when lightning came in contact with the molecules of Earth’s atmosphere? 12. Amino acids form _________, which are the key component of muscles and other tissues. 13. What happened when rocks and minerals were added to the test tubes of the early life experiment? Sentence starter: When rocks and minerals were added to the test tubes of the early life experiment... 14. The extensive surface area of clay can help create more complex molecules such as_________. 15. How long ago can scientists find the first indication of life in the rocks from Greenland? 16. What was Earth’s atmosphere like 4 billion years ago? 17. Two-thirds of all minerals on our planet were created by the introduction of _________. 18. Trilobite shells were made of _________ _________, the same mineral found in limestonethe rock that built the pyramids. 19. What allowed trilobites to preserve better as fossils than other forms of life? 20. Bones and teeth are made of _________.
