Midterm 2 Practice Exam-3
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Hartnell College *
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Course
-1850
Subject
Astronomy
Date
Dec 6, 2023
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5
Uploaded by ChiefSummer3653
Astronomy 1: Midterm 2 Practice Exam
True/False (+2pts each)
Indicate whether the sentence or statement is true or false. On your scantron, mark A for true and B for false.
____ 1. Neptune was the first planet to be discovered with the telescope.
Multiple Choice (+2pts each)
Identify the letter of the choice that best completes the statement or answers the question.
____ 2. Which of the following everyday item is most closely related to the charge-coupled device (CCD)? a. compact disc b. GPS navigation c. computer chip d. cell phone e. digital camera ____ 3. What is the best reason why Mars is red in color? a. Because it has a lot of volcanic activity which produces lava all over its surface. b. Because it has rust all over its surface. c. Because the ice on Mars reflects mostly red light. d. Because it has a thin atmosphere of carbon dioxide that reflects mostly red light. ____ 4. Which of the following people invented the first telescope? a. Hans Lippershey b. Galileo Galilei c. Johannes Kepler d. Isaac Newton ____ 5. Which planet is tilted 98 degrees so its rings are orientated perpendicular (vertical) to the plane of its orbit? a. Uranus b. Neptune c. Jupiter d. Saturn ____ 6. The planet that has the most number of visible craters is a. Mercury b. the Moon c. Earth d. Mars e. Venus ____ 7. Interferometry is a. the correction for chromatic aberration in lens. b. using a deformable mirror to counteract the scattering of light from the atmosphere. c. using several telescopes together as one in order to increase resolution. d. the correction for spherical aberration of a mirror.
____ 8. The dark areas called “mare” or “maria” on the Moon are a. cooled lava plains b. dried up seas c. lunar highlands d. fine sandy material ____ 9. Valles Marineris is a huge canyon system on which planet? a. Mercury b. Venus c. Mars d. Earth ____ 10. What element causes Uranus and Neptune to be blue in color? a. hydrogen b. water c. methane d. helium ____ 11. Which planet has the large hurricane called the Great Red Spot on it? a. Uranus b. Saturn c. Neptune d. Jupiter e. Venus ____ 12. What is the best reason that explains why we can only see one side of the Moon from the Earth? a. The Moon does not rotate. b. It takes the same amount of time for the Moon to orbit around the Earth as it does for the Earth to rotate on its axis. c. It takes the same amount of time for the Moon to rotate on its axis as it does for the Earth to rotate on its axis. d. It takes the same amount of time for the Moon to orbit around the Earth as it does for the Moon to rotate on its axis. ____ 13. Lunar soil on the Moon that consists mainly of fine sandy material is called a. maria b. highlands c. regolith d. craters ____ 14. 200 million years ago, the Earth’s only continent was called a. Gondwaniland. b. Laurasia. c. Pangaea. d. North America. ____ 15. When the different colors of light passing through a lens comes to a focus at the different distances, it is called a. refractive aberration b. focal aberration c. chromatic aberration d. spherical aberration
____ 16. What causes plate tectonics to occur on the Earth? a. Convection in the Earth’s mantle causes the material to move in a slow circular motion which causes the plates to move over time. b. The Earth’s outer molten iron core generates a current that causes the plates to shift over time. c. Strong volcanic eruptions in one part of the world can trigger the plates to move in another part of the world later on. d. The gravitational pull of the Moon results in tides that can also trigger motion of the plates when the oceans rub against the land during strong tides. ____ 17. The magnetic field of the Earth is important to humans because it a. prevents solar flares from occurring. b. prevents global warming from occurring. c. blocks most of the dangerous charged particles released by the solar wind. d. blocks out most of the harmful ultra-violet radiation from the Sun. ____ 18. Which of the following functions depend upon the diameter of the telescope? a. light gathering power and magnification. b. resolution and magnification. c. light gathering power, resolution, and magnification. d. light gathering power and resolution. Completion (+1pt)
Complete each sentence or statement.
19. What is the name of the new space telescope that launched in 2021 and replaced Hubble called? _______________________
20. What was the date that humans first walked on the Moon (include month, day, and year)? ___________________ 21. What is the name of the closest rocky planet that is located in the habitable zone outside of our Solar System?___________________
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Note: All answers for the short answer questions must come from the lecture. No answers from the internet will be accepted. Short Answer (+2pts each)
22. Scientists have discovered compelling evidence for past and current liquid water on Mars. Describe two discoveries that were made of Mars (as discussed in class) that demonstrates liquid water has existed or may still exist on Mars. Short Answer (+3pts)
23. a) What is aurora? b) What causes it to occur? Short Answer (+4pts to 5pts each)
24. a) What is currently happening to the distance of the Moon from the Earth (ie, is it moving away from the Earth or is it moving closer to the Earth)? (+1pt) b) Explain in detail why the distance of the Moon is changing. (+3pts)
25. a) What are planets that orbit around another star called? (+2pt) b) Describe one method that astronomers have developed to detect these planets. (+2pts) 26. a) When did our Solar System form? (+1pt) c) Describe in detail how our Sun and our planets were formed (+4pts)