1. What are the 2 ways rocks are Weathered?

2. What are the characteristics of the 2 Parts of Weathering?
Erosion 
Transport 

3. Define the 2 Types of Weathering.

4. What are the 5 processes of Mechanical Weathering?

5. What is Frost Action? Frost wedging
What happens to water when it freezes?

6. What are Talus cones & how do they form?

7. What is Pressure Release?
What are Sheet joints?
What is Exfoliation? Exfoliation domes?
How does Thermal expansion & contraction affect rocks?
How does Salt crystal growth affect rocks?
How do organisms affect rocks?

8. What is Chemical Weathering?
What are the agents of chemical weathering?
What are the 3 Types of Chemical Weathering?

9. How does “Solution” affect rocks?
How does “Oxidation” affect rocks?

10. _ + Calcite dissolves in acidified water. (in soln)
CaCO3 + H2O + CO Ca HCO3-
When the iron oxidizes, hematite forms by:
4Fe + 3O Fe2O3
water
carbon
dioxide
calcium
ion
calcite
bicarbonate
ion
iron
oxygen
hematite _ +

11. What is Hydrolysis? 2KAlSi3O8 + 2H+ + 9H2O Al2Si2O5(OH)4 + 2K+ + 4SiO2
orthoclase
hydrogen
ion
water
clay mineral
(kaolinite)
potassium
ion
silica ion

12. What Factors Affect the Rate of Chemical Weathering?
What parts of rocks are the most weathered?
least weathered?
What Factors Affect the Rate of Chemical Weathering?

13. Particle Size
How does surface area affect chemical & physical weathering?
What is spheroidal weathering?

14. How is chemical weathering related to Bowen’s Reaction Series?
Why is the climate a factor in chemical weathering of rocks?
Chemical Weathering is:
most intense in ____________________ reduced in ________________________.
How is chemical weathering related to Bowen’s Reaction Series?

15. What is the relationship b/w stability of minerals to the order in which they crystallize from a magma?
Bowen’s Reaction Series
Olivine Ca-Plagioclase
Pyroxene
Amphibole
Biotite Na-Plagioclase
K-Feldspar
Muscovite
Quartz

16. What is Differential weathering?
Arches Natl. Park, Utah
Pebble Beach, Calif.
What is Differential weathering?
Why do rocks weather at different rates?
Why can a single rock look weathered & unweathered in places?