The Univers

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Across
  1. 1. Season that begins around 20th March in the Northern Hemisphere.
  2. 3. Two words: the different shapes of the illuminated portion of the Moon that we see from the Earth, which change
  3. 5. The periodic change in sea level caused by the pull of the Moon and the Sun on the Earth.
  4. 8. Are the days when day and night are equal length: 12 hours.
  5. 9. Are the days when the difference in length between day and night is the biggest.
Down
  1. 2. Two words: An imaginary line passing through the poles and centre of a planet around which the planet
  2. 4. Season that begins around 22nd September in the Northern Hemisphere.
  3. 6. The partial or total occultation of one celestial body by another.
  4. 7. An imaginary line drawn around the middle of the Earth. It has an equal distance from the North Pole and the South Pole.