Science Quizlet

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Science Quizlet
2013-05-14 00:18:35
Science Quizlet

Science Quizlet
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  1. Revolution
    The length of time it takes the Earth to revolve once around the sun. 365 days
  2. Gravity
    Theforce of attraction between any two objects due to their mass. If gravity didnot exist, Earth would not revolve around the sun.
  3. Solar Eclipse
    Whenthe Moon passes directly between Earth and the Sun.
  4. Phasesof the Moon
    NewMoon, Waxing Crescent, 1st Quarter, Waxing Gibbous, Full Moon, Waning Gibbous,Last Quarter, Waning Crescent
  5. Mercury
    Thefirst planet, which has the least amount of mass, in our solar system.
  6. OuterPlanets
    Beyondthe astroid belt - Jupiter, Saturn, Uranus, Neptune - large and made of gas
  7. Ganymede
    Thelargest moon in our solar system.
  8. Lunareclipse
    Themoon is hidden by Earth's shadow.
  9. InnerPlanets
    First four planets in our solar system - Mercury, Venus, Earth, and Mars - rocky and located before the astroid belt.
  10. Rotation
    asingle complete turn of Earth on its axis - 24 hours.
  11. Uranus
    Blue-green in color due to the presence of methane in its atmosphere - 7th planet in our solar system.
  12. Venus
    Secondplanet in the solar system - has the highest surface temperature.
  13. Planet
    Anobject that orbits a star and does not produce its own light.
  14. Asteroid
    Rockyobjects orbiting the Sun.
  15. Satellites
    Naturalor artificial objects that circle around objects in space.
  16. Nebula
    Ahuge cloud of gases and dust that eventually becomes a star.
  17. Light-year
    Away of writing the distance of stars because they are so far from Earth becomesawkward.

    A unit of measure that equals the distance light travels through space in one year; a way to measure extremely vast distances; it equals 9.46 trillion kilometers, or 9.46 x 1012 km.
  18. Polaris
    TheNorth Star
  19. GreatRed Spot
    Jupiter'slarge storm.
  20. Hydrogen
    Hydrogenatoms combine to form helium atoms in a star.
  21. Helium
    Anelement found in a star. When this element is gone, a star begins to cool andshrink.
  22. Mars
    Fourthplanet in the solar system. First planet explored by a space probe.
  23. Galaxy
    A huge collection of stars.
  24. BlackHole
    Anobject whose gravity is so strong that light cannot escape it.
  25. Comet
    Amixture of ice, frozen gases, rock, and dust left over from the formation ofthe solar system.
  26. Constellation
    Any of the patterns formed by groups of stars in the night sky.
  27. Galaxy
    Acollection of billions of stars
  28. Inertia
    The tendency of a moving object to keep moving in a straight line or of any object to resist a change in motion.
  29. Meteor
    A chunk of rock from space that travels through Earth's atmosphere.
  30. Moon
    Anatural object that orbits the planets.
  31. orbit
    Thepath one object travels around another object.
  32. Phase
    Theappearance of the shape of the moon at a particular time.
  33. Planet
    Alarge object that orbits a star and does not produce its own light.
  34. Star
    Anobject in space that produces its own energy, including heat and light.
  35. Supernova
    Astar that has produced more energy than gravity can hold together and explodes.
  36. Telescope
    Aninstrument that makes distant objects appear closer and larger.
  37. Tide
    Theregular rise and fall of the water level along a shoreline.
  38. WhiteDwarf
    Astar that can no longer turn helium into carbon; it cools and shrinks, becomingvery small and dense.
  39. Factorsthat determine the amount of gravity of a planet
    Distance and Mass
  40. AU - Astronomical Unit
    The distance from the sun to Earth (about 93,000,000 miles)
  41. Mercury
    .4 AU
  42. Venus
    .7 AU
  43. Earth
  44. Kepplers Laws
    • Law of Orbits
    • Law of Areas
    • Law of Periods
  45. The Law of Orbits
    All planets move in elliptical orbits, with the sun at one focus.
  46. The Law of Areas
    A line that connects a planet to the sun sweeps out equal areas in equal times.
  47. The Law of Periods
    The square of the period of any planet is proportional to the cube of the semimajor axis of its orbit.