Quiz 25 Extinction

11/29/23, 4:24 AM Quiz 25: Extinction: GEO 1040-001 Fall 2023 World of Dinosaurs Quiz 25: Extinction Due Dec 5 at 11:59pm Points 5 Questions 10 Available Nov 26 at 12am - Dec 7 at 11:59pm Time Limit 40 Minutes Allowed Attempts 5 Instructions This quiz will check your understanding of the concepts from Lecture 25 of our class. NOTE! » You can take this quiz FIVE TIMES and it will keep only your high score. o After each completion, it will show your answers marked correct or incorrect. e | can continue to edit it to add hints and clarifying examples in the feedback it provides. Ethically, you SHOULD take this quiz by yourself, without rapidly trying to google each answer, to test your own understanding of the material. Ethically, it is OK to complete a trial of the quiz and to THEN discuss the puzzles with a friend, or look them up on the resources we've posted, or the wider internet. Iteration is key to these weekly quizzes. Don't feel bad if a question is challenging. Take some notes, figure out how to think through the problem, and come back to try it again. Take the Quiz Again Attempt History Attempt Time Score LATEST Attempt 1 3 minutes 4.5 out of 5 https://utah.instructure.com/courses/894800/quizzes/3236495 1/7

11/29/23, 4:24 AM Quiz 25: Extinction: GEO 1040-001 Fall 2023 World of Dinosaurs Score for this attempt: 4.5 out of 5 Submitted Nov 29 at 4:22am This attempt took 3 minutes. Question 1 0/0.5 pts Of all the species that have ever lived on Earth, approximately what percentage is alive today? Correct Answer 0.1% 10% 20% 950% You Answorod| [ 100% Question 2 0.5/0.5 pts There is a major mass extinction at the end of all of the following time periods EXCEPT? Ordovician https://utah.instructure.com/courses/894800/quizzes/3236495 2/7

11/29/23, 4:24 AM Quiz 25: Extinction: GEO 1040-001 Fall 2023 World of Dinosaurs A giant crater called Chicxulub in the Yucatan Peninsula was the result of an impact that was likely the cause of the K/T extinction. (T/F) Correct! True False Question 5 0.5/0.5 pts All of the following have provided evidence that something HIT the earth at the end of the Cretaceous EXCEPT.: tsunami deposits fern spike Correct! lava flows Iridium anomaly shocked quartz Question 6 0.5/0.5 pts https://utah.instructure.com/courses/894800/quizzes/3236495 4/7

11/29/23, 4:24 AM Quiz 25: Extinction: GEO 1040-001 Fall 2023 World of Dinosaurs Why are impact craters always round? Because bolides always hit from nearly straight overhead Correctl Because bolides explode from kinetic energy when they hit Because melted material cannot hold an oval shape Because all bolides are round Question 7 0.5/0.5 pts The 10 km asteroid that created the Chicxulub crater 65 million years ago triggered a tsunami wave as high as? 10 meters Correctl 100 meters 10 kilometers 100 kilometers 1000 kilometers https://utah.instructure.com/courses/894800/quizzes/3236495 5/7

11/29/23, 4:24 AM Quiz 25: Extinction: GEO 1040-001 Fall 2023 World of Dinosaurs Question 10 0.5/0.5 pts On average, how often does an extinction level event (>10 km diameter bolide) hit the Earth? Every 100,000 years Every 1 million years Every 10 million years Correct! Every 100 million years Quiz Score: 4.5 out of 5 https://utah.instructure.com/courses/894800/quizzes/3236495 717