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Purdue University *

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105

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Physics

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Dec 6, 2023

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Asynchronous Quiz 21 1 2 Your work has been saved and submitted Written Dec 3, 2023 3:31 AM - Dec 3, 2023 3:32 AM • Attempt 1 of 1 Attempt Score 10 / 10 - 100 % Overall Grade (Highest Attempt) 10 / 10 - 100 % Question 1 1 / 1 point Quiz 21: Unit 11. Part 1. Question 1. Watch the Unit 11 Part 1 Your quiz has been submitted successfully.

lecture video and answer the following question: When a spacecraft uses a gravitational assist from a planet, if the planet is moving in the opposite direction of the spacecraft, what happens to the speed of the spacecraft? Question 2 1 / 1 point Quiz 21: Unit 11. Part 1. Question 2. Watch the Unit 11 Part 1 lecture video and answer the following question: Why is Mercury the most difficult planet to orbit? Question 3 1 / 1 point Quiz 21: Unit 11. Part 1. Question 3. Watch the Unit 11 Part 1 lecture video and answer the following question: If a radar return from the surface of a planet to a spacecraft is dark, what does it tell us about the surface? a. It speeds up. b. It slows down. c. It remains the same because planetary assists only change the path of a spacecraft not its speed. a. It is very small. b. It is very hot. c. The Sun accelerates any approaching objects, so it takes a lot of fuel to slow down. d. The solar wind is exceedingly strong this close to the Sun. a. It is smooth b. It is rough c. It is low topography

Question 4 1 / 1 point Quiz 21: Unit 11. Part 1. Question 4. Watch the Unit 11 Part 1 lecture video and answer the following question: What milestones did the Soviet Union's Luna 1 spacecraft achieve? Question 5 1 / 1 point Quiz 21: Unit 11. Part 1. Question 5. Watch the Unit 11 Part 1 lecture video and answer the following question: What do variations in the gravity field tell us about a planet? Question 6 1 / 1 point Quiz 21: Unit 11. Part 2. Question 6. Watch the Unit 11 Part 2 lecture video and answer the following question: Why is Mars the most explored planet? d. It is high topography a. The first spacecraft to achieve escape velocity from the Earth. b. The first spacecraft to reach the Moon. c. The first spacecraft aimed at the Moon that missed. d. All the above a. Its topography b. Its internal structure c. Its temperature d. Its chemistry a. It is the closest planet to the Earth b. It is the only other planet with lakes on its surface

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Question 7 1 / 1 point Quiz 21: Unit 11. Part 2. Question 7. Watch the Unit 11 Part 2 lecture video and answer the following question: What did the Viking spacecraft measure on Mars that was key to identifying the origin of the Lafayette Martian Meteorite? Question 8 1 / 1 point Quiz 21: Unit 11. Part 2. Question 8. Watch the Unit 11 Part 2 lecture video and answer the following question: What did the InSight robotic lander not attempt to measure on the surface of Mars? Question 9 1 / 1 point Quiz 21: Unit 11. Part 2. Question 9. Watch the Unit 11 Part 2 lecture video and answer the following question: Why was Jezero c. It holds the greatest chance of finding evidence of past or present extraterrestrial life d. It has an atmosphere like that of Earth a. Atmospheric chemistry b. Surface rock mineralogy c. Water content of surface rocks d. Age of surface rocks a. Marsquakes b. Soil chemistry c. How temperature increases with depth d. It attempted to measure all the above

Crater chosen as the landing site for the rover Perseverance? Question 10 1 / 1 point Quiz 21: Unit 11. Part 2. Question 10. Watch the Unit 11 Part 2 lecture video and answer the following question: What will the Mars 2020 rover Perseverance do on Mars besides searching for evidence of past life? Done a. Because craters have smooth floors making it easy for rovers to maneuver. b. Because the cratering process excavates deep into the crust, exposing rocks not normally accessible on the surface. c. Because the crater was once filled with water. d. Because it is the only crater on Mars that currently has a lake in it. a. Collect rocks for another spacecraft to return to Earth b. Record marsquakes c. Measure surface heat flow d. Plant a time capsule for future explorers

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