EAPS 105: Asynchronous Quiz 11
Quiz 11: Unit 6. Part 2. Question 8. Watch the Unit 6 Part 2 lecture video and answer the following question: How far does an ejecta blanket (i.e., continuous ejecta, not crater rays) usually extend beyond a crater rim? A) 1 crater diameter D) 2 crater diameters C) 5 crater diameters D) 10 crater diameters
A) 1 crater diameter
Quiz 11: Unit 6. Part 2. Question 5. Watch the Unit 6 Part 2 lecture video and answer the following question: Which craters are circular, bowl-shaped depressions, that are partially filled with impact breccia? A) Simple craters B) Complex craters C) Peak-ring craters D) Multi-ring basins
A) Simple craters
Quiz 11: Unit 6. Part 1. Question 2. Watch the Unit 6 Part 1 lecture video and answer the following question: With the Earth's mass (gravity) so much larger than the Mercury's, why do asteroids hit Mercury with higher velocities? A) Because Mercury orbits faster. B) Because Mercury is much closer to the Sun. C) Because the Moon causes asteroids to slow down before impacting Earth. D) Because Mercury has a proportionally larger iron core.
B) Because Mercury is much closer to the Sun.
Quiz 11: Unit 6. Part 2. Question 6. Watch the Unit 6 Part 2 lecture video and answer the following question: Which craters have flat floors, a central peak, and terraced rims? A) Simple craters B) Complex craters C) Peak-ring craters D) Multi-ring basins
B) Complex craters
Quiz 11: Unit 6. Part 1. Question 4. Watch the Unit 6 Part 1 lecture video and answer the following question: When does a transient crater form? A) The moment of impact B) During the contact and compression stage C) At the end of the excavation stage D) At the end of the modification stage
C) At the end of the excavation stage
Quiz 11: Unit 6. Part 2. Question 10. Watch the Unit 6 Part 2 lecture video and answer the following question: What does bright ejecta on the Moon mean regarding an impact crater? A) That the impact crater formed in an anomalously hotter region of the Moon B) That the impact crater is relatively old C) That the impact crater is relatively young D) That the impact crater was caused by a comet as opposed to an asteroid
C) That the impact crater is relatively young
Quiz 11: Unit 6. Part 1. Question 1. Watch the Unit 6 Part 1 lecture video and answer the following question: What does the minimum impact velocity of an asteroid depend on? A) The mass of the asteroid B) The density of the asteroid C) The escape velocity of the target planet D) There is no minimum impact velocity.
C) The escape velocity of the target planet
Quiz 11: Unit 6. Part 2. Question 9. Watch the Unit 6 Part 2 lecture video and answer the following question: Which type of impact angles lead to butterfly ejecta patterns? A) Those from straight or close to straight overhead (very steep angles: 45-90 degrees). B) Those from medium low angles (20-35 degrees). C) Those from very low angles (< 15 degrees). D) Ejecta patterns are not influenced by the angle of impact, they are always round.
C) Those from very low angles (< 15 degrees).
Quiz 11: Unit 6. Part 1. Question 3. Watch the Unit 6 Part 1 lecture video and answer the following question: Why are impact craters generally 10-30 times bigger than the impactor itself and almost always round? A) Because impacts occur at very high speeds B) Because impacts generate a shock wave that spreads out in all directions C) Because impacts behave just like explosions D) All of the above
D) All of the above
Quiz 11: Unit 6. Part 2. Question 7. Watch the Unit 6 Part 2 lecture video and answer the following question: Which are the largest impact craters? A) Simple craters B) Complex craters C) Peak-ring craters D) Multi-ring basins
D) Multi-ring basins
