science

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Across
  1. 2. how close a measurement is
  2. 4. how close a group of measurements are to each other
  3. 7. a group of mountains that are closely related in shape
  4. 8. the numerical average of a data set
  5. 9. the middle number in a set of data
  6. 11. how much matter is in an object
  7. 12. forms an imaginary line that circles earth
  8. 13. these areas had high relief or great difference in elevation
Down
  1. 1. a half circle from the north pole to the south pole
  2. 3. a landform made up of nearly flat or gently rolling land with low relief
  3. 4. rarely perfectly smooth on top
  4. 5. that stands for features on a map representing Earth's surface
  5. 6. one half of the sphere that makes up Earth's surface
  6. 10. distance in degrees north and south of the equator
  7. 11. is a landform with high elevation and high relief