Chapter 27 3 Vocab

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Across
  1. 3. when the moon is closest to the earth in its orbit
  2. 7. when its orbital and rotational periods are equal. It’s the reason we only see one side of the moon.
  3. 9. when the moon is farthest from the earth in its orbit
Down
  1. 1. the plane of earth's orbit around the sun
  2. 2. when the moon passes directly between the sun and earth and blocks the sun from view. You can still see the outer layers of the sun though. There are also partial solar eclipses when the moon only blocks part of the sun.
  3. 4. When day and night are equal length. It's when earth is midway between solstices. Happens around September 22 and march 20.
  4. 5. when the sun is overhead at is farthest distance either north or south of the equator. Marked by the longest and shortest days of the year. June 21 (summer) and December 22 (winter).
  5. 6. when the moon passes behind the earth in relation to the sun. this can only happen with a full moon.
  6. 8. The time it takes for a planetary body to make one orbit around another larger body.