SC 250 UNIT 7 QUIZ Unit 7 Quiz 1. Question : Which of the following satellite observatories cannot detect the presence of a black hole? Student Answer: Compton Gamma Ray Observatory (GRO) Chandra X-ray Observatory Hubble Space Telescope (HST) Space Infrared Telescope Facility (SIRTF) Giant Magellan Telescope Question 2. Question : Which of the following telescopes is ground-based and has a single light-gathering mirror? Student Answer: Fermi Telescope Hubble Space Telescope Keck Telescope Chandra Observatory Giant Magellan Telescope Question 3. Question : If Newton’s laws of motion only affected motion in our solar system, then: Student Answer: Venus’s orbit could be the reverse of Earth’s orbit. Earth’s Moon could rise in the west and set in the east. Mars’s orbit could be perpendicular to Jupiter’s orbit. Saturn’s rings could be at random angles to their current plane. All of the above. Question 4. Question : Earth’s northern lights here caused by: Student Answer: a nearby supernova. giant lightning storms. Earth’s magnetic field. particles in the solar wind. none of the above. Question 5. Question : In 2018, the __________ will generate images of about the same sharpness as Hubble but from Earth. Student Answer: Compton Gamma Ray Observatory (GRO) Chandra X-ray Observatory Hubble Space Telescope (HST) Space Infrared Telescope Facility (SIRTF) Giant Magellan Telescope Question 6. Question : Why do astronomers currently prefer orbiting telescopes over Earth-based telescopes? Student Answer: lower user costs and more research time options exciting space travel possible for observations many of the regions of electromagnetic radiation are absorbed in our atmosphere greater international cooperation more aesthetically pleasing Question 7. Question : The Earth’s atmosphere has probably been affected by all of the following except for: Student Answer: volcanoes. strong solar winds. steam from the tropical jungles. the number of living things on Earth. increased amounts of hydrogen and helium. Question 8. Question : All planets orbit the Sun: Student Answer: in a direction opposite to the way that the Sun rotates on its axis. the same direction that that the Sun rotates on its axis. in different directions, some of which are the same direction that the Sun rotates on its axis. in a direction that is about 90 degrees to the way that the Sun rotates on its axis. none of the above. Question 9. Question : Why are the Jovian planets formed from materials different from the terrestrial planets? Student Answer: Terrestrial planets were protected by the asteroid belt between Mars and Jupiter. The composition of elements in a planet was a random process after the Big Bang. When the solar system first formed, the heaviest elements sank toward the center of the nebulae and the lightest elements floated out. Gaseous Jovian planets, formed farther away from the heat of the Sun, are formed from light weight nebulae “dust.” Only the terrestrial planets formed from planetesimals. Question 10. Question : The Nice model of the solar system states: Student Answer: Uranus and Neptune formed much closer to the Sun than where they are found today. there were more than a dozen planet sized objects in the early solar system. the present solar system is basically the same as when the planets first formed. Jupiter and Saturn are much closer to the Sun today than when they first formed. Pluto was once very close to the Sun and was blasted out from a giant solar explosion.