Weathering

3. can cause weathering along a shoreline
4. beings do a lot of mechanical weathering whenever they dig or blast into rock
5. rain - acid precipitation falling as rain
8. - the absorption by a mineral of one or more oxygen ions. The major type of chemical weathering, particularly in rocks containing iron
10. when carbon dioxide is present and carried by water, a weak acid called carbonic acid is created
12. ____________________ are also responsible for a good deal of physical weathering as the move along the rocky surface, and as they freeze and melt and refreeze on top of rocky soil
14. this erosion takes place when minerals in the rock form a new solution, usually due to the presence of water
15. physical weathering is a naturally or artificially occurring geological phenomenon in which ________ change their physical properties without affecting their chemical composition
16. _____________________weathering-chemical effects of water, carbon dioxide, and oxygen attacking and destroying the minerals that are near the surface of the Earth
17. example of a man-made object that has been changed by weathering
18. ___________ are responsible for the physical weathering of rocks as their roots grow up through the surface of the ground and rock face

1. the natural features of the Earth's surface
2. one rock bumping against another rock
3. ice _______________ - a collective term for several mechanical weathering processes induced by stresses created by the freezing of water into ice
6. rates - a measurement of the amount of weathering over a given time period
7. as rocks weather and erode, the ___________ eventually becomes rock again--a sedimentary rock
9. __________________ weathering-any of the destructive effects of the atmosphere and the exposure of rocks to the extremes of the surface
11. when liquid water changes into solid ice, it increases in __________
13. the movement of weathered rocks by natural forces