Across
- 2. - heating of rock
- 4. - water fills crack of rock
- 5. - caused by friction of sand carried by wind
- 6. - earthen materials are worn away and transported
- 8. rock looks rusted
- 9. - carbon dioxide reacts with chemical in rocks
Down
- 1. fungus grows on rocks
- 3. - water comes into contact with particular rock type
- 6. - consistent heating and cooling of rock
- 7. - oxygen reacts with materials in rock material