terr, terra, geo = land; earth

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Across
  1. 2. the study of the earth, specifically rocks and the planet's crust
  2. 3. an area, region, or piece of land
  3. 4. out of this world; above and beyond what is found on planet Earth
  4. 8. almost completely surrounded by land
  5. 9. a raised, flat mound of earth (dirt) that looks like a platform with slopping sides
Down
  1. 1. under the surface of the earth; underground
  2. 2. a person who studies the regions of the earth; including the climates and natural resources
  3. 5. cotta baked earth; hard, brownish-red pottery
  4. 6. the science of the earth that deals with the regions or places on the planet's surface
  5. 7. a hollow stone found on the earth that is lined on the inside with crystals