Explain What Two Factors Speed Up Rates Of Chemical Weathering
cd1) What two factors speed up rates of chemical reaction and weathering in rocks and soils?
A) low temperatures; very dry
B) low temperatures; very moist
C) high temperatures; very dry
D) warm temperatures; very moist
2) Which of the following statements about acidic precipitation is likely to be false?
A) Chemical weathering and deterioration of exposed rock and metal surfaces will accelerate if acidic precipitation increases.
B) Lowered taxes and relaxed governmental regulations will result in more private and public sector spending to reduce emissions of acid-forming gases to the atmosphere.
C) Fish and other aquatic species in acidified lakes will eventually die off and disappear due to the toxic effects of the acidic waters …show more content…
A) The quartz in the gabbro and basalt decomposes very quickly.
B) The ferromagnesian minerals in the gabbro and basalt are subject to oxidation and chemical breakdown.
C) The plagioclase feldspars in the granite and rhyolite decompose readily to clay minerals and iron oxides.
D) The potassium feldspars and quartz in the rhyolite and granite are more susceptible to cracking by frost wedging.
4) Assume that water filling a crack in a rock undergoes cycles of freezing and melting. Which of the following statement is true?
A) Water expands as it melts, causing the crack walls to be pushed apart.
B) Water shrinks as it freezes, causing the crack walls to be drawn closer together.
C) Water expands as it freezes, causing the crack walls to be pushed apart.
D) Water shrinks as it melts, causing the crack walls to be pulled closer together.
5) Zircon and tourmaline are dense, highly insoluble, chemically stable, minor minerals of igneous and metamorphic rocks. In which sedimentary rock might you expect to find these minerals concentrated?
A) sandstone lithified from quartz-rich beach
A) low temperatures; very dry
B) low temperatures; very moist
C) high temperatures; very dry
D) warm temperatures; very moist
2) Which of the following statements about acidic precipitation is likely to be false?
A) Chemical weathering and deterioration of exposed rock and metal surfaces will accelerate if acidic precipitation increases.
B) Lowered taxes and relaxed governmental regulations will result in more private and public sector spending to reduce emissions of acid-forming gases to the atmosphere.
C) Fish and other aquatic species in acidified lakes will eventually die off and disappear due to the toxic effects of the acidic waters …show more content…
A) The quartz in the gabbro and basalt decomposes very quickly.
B) The ferromagnesian minerals in the gabbro and basalt are subject to oxidation and chemical breakdown.
C) The plagioclase feldspars in the granite and rhyolite decompose readily to clay minerals and iron oxides.
D) The potassium feldspars and quartz in the rhyolite and granite are more susceptible to cracking by frost wedging.
4) Assume that water filling a crack in a rock undergoes cycles of freezing and melting. Which of the following statement is true?
A) Water expands as it melts, causing the crack walls to be pushed apart.
B) Water shrinks as it freezes, causing the crack walls to be drawn closer together.
C) Water expands as it freezes, causing the crack walls to be pushed apart.
D) Water shrinks as it melts, causing the crack walls to be pulled closer together.
5) Zircon and tourmaline are dense, highly insoluble, chemically stable, minor minerals of igneous and metamorphic rocks. In which sedimentary rock might you expect to find these minerals concentrated?
A) sandstone lithified from quartz-rich beach