Earth And Space Systems

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Across
  1. 2. Planet located in the habitable zone of the solar system, with conditions that allow for the presence of large amounts of liquid water. This planet has one moon, luna.
  2. 6. of Revolution The time it takes for an object (such as a planet) to go around another object (such as the sun).
  3. 7. A system of millions or billions of stars, together with gas and dust, held together by gravitational attraction.
  4. 8. Eclipse This type of eclipse occurs at a full moon when Earth is directly between the moon and the sun. Light that normally would illuminate the moon is blocked by the earth casting a shadow on the moon.
  5. 10. Each of the four divisions of the year (spring, summer, autumn, and winter) marked by particular weather patterns and daylight hours, resulting from the earth's changing position and tilt with regard to the sun.
  6. 11. Icy gas giant that rotates on its side.
  7. 12. Phase of the moon where more than half is illuminated, but the moon is not quite full.
  8. 15. tide The time at which the tide reaches its lowest level (occurs when the sun and moon are not aligned)
  9. 16. Cold, blue gas giant with a prominent dark spot.
  10. 19. Year (LY) The distance that light travels in one year. Used to measure HUGE distances in space.
  11. 21. A ball of hot gas, primarily hydrogen and helium, that undergoes nuclear fusion. The closes one of these to Earth is our Sun.
  12. 22. Satellite An object that orbits a planet and is not man made - the moon is an example of one on earth.
  13. 23. Eclipse This type of eclipse occurs when the moon passes directly between the Sun and Earth and casts a shadow over part of Earth.
  14. 24. The smallest terrestrial planet and the planet closest to the sun. Scorching temperatures here by day, extremely cold temperatures here by night due to the almost non-existent atmosphere.
  15. 25. Becoming more full.
Down
  1. 1. of Rotation The time it takes for an object (such as a planet or a moon) to spin a full 360° on its axis.
  2. 3. tide The time at which the tide reaches its highest level (occurs when the sun and/or moon are in line with the earth)
  3. 4. Earth's "twin" planet with a runaway greenhouse gas effect. The atmosphere here is always hot and filled with clouds of sulfuric acid. This planet rotates backwards and a day here is longer than a year.
  4. 5. Tide The tide with the greatest difference between consecutive low and high tides. Caused by the alignment of the sun and the moon, so gravitational pull on the earth's oceans is amplified.
  5. 9. Unit (AU) The average distance between Earth and the sun, about 150 million km. A unit used for measuring distances between planets in our solar system.
  6. 13. The path of an object as it revolves around another object in space
  7. 14. Gas giant with the strongest magnetosphere in the solar system, the most moons and a giant red spot- a megastorm, that is twice the size of earth.
  8. 17. Red planet that shows evidence of flowing water at one point in its history. Home to Olympus Mons, the largest volcano in the solar system.
  9. 18. Tide the tide with the least difference between consecutive low and high tides. Occurs when sun and moon are at right angles to each other, canceling out some of the effects of gravity on the earth's oceans.
  10. 20. The alternate rising and falling of the sea, usually twice in each lunar day at a particular place, due to the gravitational attraction of the moon and sun.
  11. 21. Gas giant with the most prominent ring system.
  12. 25. Becoming less full.