Across
- 2. decayed material in the soil
- 6. least populated continent
- 8. is full of airholes and can float on water
- 9. made from mud
- 12. 365 1/4 days
- 13. the "Island Continent"
- 14. can be used to write on
- 16. wearing away of the earth's topsoil
- 17. leaves a white mark
Down
- 1. helps hold water in the soil
- 3. used to make the Lincoln Memorial
- 4. causes the energy in moving water
- 5. the number of groups geologists divide rocks into
- 7. made mostly of solid, hot rock
- 10. made from seashells
- 11. rocks formed from hot magma
- 12. one day
- 15. contains the countries of Egypt and Nigeria