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1.objects revolving around the sun between Mars and Jupiter that are too small and too numerous to be considered planets 2. large chunks of ice and dust whose orbits can be very long, narrow ellipses 3. reddish loops of gas that link different parts of sunspot regions 4. the middle layer of the sun’s atmosphere 5. the trapping of heat by the atmosphere 6. the four planets that have rocky surfaces 7.explosions of hydrogen gas from the sun’s surface that occur when loops in sunspot regions suddenly connect and increases the solar wind resulting in an increase in the number of particles that reach the Earth’s atmosphere 8. center; on the sun this is where fusion occurs 9.the outer layer of the sun’s atmosphere 10. chunks of rock or dust in space 11. a description of the solar system in which all of the planets revolve around the sun; Copernicus believed in this 12. an elongated circle or oval shape 13. tendency of a moving object to continue in a straight line or a stationary object to remain in place 14. the orbit of a satellite that revolves around Earth at the same rate that Earth rotates 15. any natural or artificial object that revolves around an object in space 16. the inner layer of the sun’s atmosphere; the part of the sun that we see 17. a description of the solar system that the Greeks believed in which all of the planets revolve around Earth 18. rotating in the opposite direction from most other planets; Venus rotates in this way 19. a large planetary system that consists of a combination of many smaller planetary systems and object 20. electrically charged particles that stream from the sun’s corona and are usually blocked by the Earth’s atmosphere and magnetic field 21. the combining of 2 atomic nuclei to produce a single larger nucleus 22. the forces that attracts all objects toward one another 23. the first four outer planets 24. streaks of light we see in the sky caused by meteoroids’ friction with the atmosphere 25. movement of the planet around the sun 26. the spinning motion of a planet on its axis 27. meteoroids that pass through the atmosphere & hit Earth’s surface 28. areas of gas on the sun that are cooler than the gases around them and the number varies every 10-11 years 29. the region of the solar system between Mars & Jupiter where many asteroids are found 30.___ proposed that the planets’ orbits was elliptical. 31. The ___ are generally larger & further from the sun. 32. The atmospheres of the gas giants cannot escape into space because a. the gases are too heavy. b. the gases solidify at higher elevations. c. the planets have very strong gravity. d. although the are big, the planets have little mass. 33. Venus and Earth are much alike in terms of their a. size and density. b. rates of rotation c. atmosphere d. direction of rotation 34. When working in space, astronauts’ spacesuits protects them from: a. losing consciousness. b. vital organs expanding. c. micrometeoroids hitting them d. all of the above Planet Period of Rotation (Earth days) Period of Revolution (Earth years) Mars 1.03 1.9 Jupiter .41 12 Neptune .67 165 35. Which planet in the above chart has the shortest day? Planet Period of Rotation (Earth days) Period of Revolution (Earth years) Mars 1.03 1.9 Jupiter .41 12 Neptune .67 165 36. Which planet in the above chart has the longest day? Planet Period of Rotation (Earth days) Period of Revolution (Earth years) Mars 1.03 1.9 Jupiter .41 12 Neptune .67 165 37. Which planet in the above chart has the longest year? Planet Period of Rotation (Earth days) Period of Revolution (Earth years) Mars 1.03 1.9 Jupiter .41 12 Neptune .67 165 38. Which planet in the above chart has the shortest year? 39. Rockets take off due to which of Newton’s Laws? a. Law of Gravitational Pull b. 1st Law of Motion c. 2nd Law of Motion d. 3rd Law of Motion 40. Which planet would require the greatest escape velocity to escape the pull of gravity? 41. the region beyond Neptune made of mostly icy objects such as comets and dwarf planets a. Kepler Belt b. Kelper Belt c. Kuiper Belt d. Kerper Belt Check your answers and mark any you want to review. 1.objects revolving around the sun that are too small and too numerous to be considered planets asteroids 2.large chunks of ice and dust whose orbits can be very long, narrow ellipses comets 3.reddish loops of gas that link different parts of sunspot regions prominences 4.the middle layer of the sun’s atmosphere chromosphere 5.the trapping of heat by the atmosphere greenhouse effect 6.the four planets that have rocky surfaces terrestrial planets 7. explosions of hydrogen gas from the sun’s surface that occur when loops in sunspot regions suddenly connect and increases the solar wind resulting in an increase in the number of particles that read the Earth’s atmosphere solar flares 8. center; on the sun this is where fusion occurs core 9.the outer layer of the sun’s atmosphere corona 10.chunks of rock or dust in space meteoroids 11.a description of the solar system in which all of the planets revolve around the sun; Copernicus believed in this heliocentric system 12.an elongated circle or oval shape ellipse 13.tendency of a moving object to continue in a straight line or a stationary object to remain in place inertia 14.the orbit of a satellite that revolves around Earth at the same rate that Earth rotates geosynchronous orbit 15.any natural or artificial object that revolves around an object in space satellite 16.the inner layer of the sun’s atmosphere; the part of the sun that we see photosphere 17. a description of the solar system that the Greeks believed in which all of the planets revolve around Earth geocentric system 18.rotating in the opposite direction from most other planets; Venus rotates in this way retrograde rotation 19.a large planetary system that consists of a combination of many smaller planetary systems and object solar system 20.electrically charged particles that stream from the sun’s corona and are usually blocked by the Earth’s atmosphere and magnetic field solar winds 21. the combining of 2 atomic nuclei to produce a single larger nucleus nuclear fusion 22.the forces that attracts all objects toward one another gravity 23.the first four outer planets gas giants 24.streaks of light we see in the sky caused by meteoroids’ friction with the atmosphere meteors 25.movement of the planet around the sun revolution 26.the spinning motion of a planet on its axis rotation 27.meteoroids that pass through the atmosphere & hit Earth’s surface meteorites 28. areas of gas on the sun that are cooler than the gases around them and the number varies every 10-11 years sunspots 29. the region of the solar system between Mars & Jupiter where many asteroids are found asteroid belt 30.___ proposed that the planets’ orbits was elliptical. Kepler 31. The ___ are generally larger & further from the sun. gas giants 32. The atmospheres of the gas giants cannot escape into space because a. the gases are too heavy. b. the gases solidify at higher elevations. c. the planets have very strong gravity. d. although the are big, the planets have little mass. 33. Venus and Earth are much alike in terms of their a. size and density. b. rates of rotation c. atmosphere d. direction of rotation 34. When working in space, astronauts’ spacesuits protects them from: a. losing consciousness. b. vital organs expanding. c. micrometeoroids hitting them d. all of the above Planet Period of Rotation (Earth days) Period of Revolution (Earth years) Mars 1.03 1.9 Jupiter .41 12 Neptune .67 165 35. Which planet in the above chart has the shortest day? Jupiter Planet Period of Rotation (Earth days) Period of Revolution (Earth years) Mars 1.03 1.9 Jupiter .41 12 Neptune .67 165 36. Which planet in the above chart has the longest day? Mars Planet Period of Rotation (Earth days) Period of Revolution (Earth years) Mars 1.03 1.9 Jupiter .41 12 Neptune .67 165 37. Which planet in the above chart has the longest year? Neptune Planet Period of Rotation (Earth days) Period of Revolution (Earth years) Mars 1.03 1.9 Jupiter .41 12 Neptune .67 165 38. Which planet in the above chart has the shortest year? Mars 39. Rockets take off due to which of Newton’s Laws? a. Law of Gravitational Pull b. 1st Law of Motion c. 2nd Law of Motion d. 3rd Law of Motion 40. Which planet would require the greatest escape velocity to escape the pull of gravity? Jupiter 41. the region beyond Neptune made of mostly icy objects such as comets and dwarf planets a. Kepler Belt b. Kelper Belt c. Kuiper Belt d. Kerper Belt