terra- terr- geo-

12345678910
Across
  1. 4. almost or completely surrounded by land
  2. 7. out of this world
  3. 8. study of earth
  4. 9. hollow stone with crystals on the inside
  5. 10. raised flat mound of earth
Down
  1. 1. under the surface
  2. 2. person who studies regions of earth
  3. 3. the science of the earth that deals with the regions
  4. 5. area
  5. 6. brownish red pottery