Geography: A Living Planet

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Across
  1. 3. the thin rock layer making up the earth's surface.
  2. 5. drift the hypothesis that all continents were once joined into a supercontinent that split apart over millions of years.
  3. 6. the earth's center, made up of iron and nickel; the inner core is solid, and the outer core is liquid.
  4. 7. the layers of gasses immediately surrounding the earth.
  5. 9. the molten rock material formed when solid rock in the earth's mantle or crust melts.
  6. 11. a landmass above water on the earth.
  7. 12. the solid rock portion of the earth's surface.
Down
  1. 1. the waters comprising the earth's surface, including oceans, seas, rivers, lakes, and vapor in the atmosphere.
  2. 2. the waters comprising the earth's surface, including oceans, seas, rivers, lakes, and vapor in the atmosphere.
  3. 4. consists of the sun and eight known planets, as well as other celestial bodies that orbit the sun
  4. 8. How many regular planets does our solar system consist of?
  5. 10. a rock layer about 1,800 miles thick that is between the earth's crust and the earth's core.