SOLAR SYSTEM AND THE EARTH'S MOVEMENTS

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Across
  1. 6. A huge group of billions of stars, gas, and dust held together by gravity (like the Milky Way).
  2. 7. The time of day when the Sun disappears below the horizon in the evening.
  3. 8. The time of day when the Sun appears above the horizon in the morning.
  4. 9. The long trip Earth takes around the Sun, which takes one year (365 days).
Down
  1. 1. The invisible force that pulls objects toward each other and keeps planets around the Sun.
  2. 2. The spinning of Earth on its axis, which causes the cycle of day and night.
  3. 3. The imaginary line running through the center of the Earth from North Pole to South Pole.
  4. 4. A large, round body that travels around a star (like the Sun).
  5. 5. A division of the year (spring, summer, fall, winter) caused by the Earth's tilt and revolution.
  6. 10. The curved path a planet or moon follows as it goes around a star or planet.