Question 76 (1 point)
mass wasting refers to the downslope movement of rock, regolith, and soil under the direct influence of gravity.
question 76 options:
true
false
question 78 (1 point)
a triggering mechanism, such as heavy rains or an earthquake, is necessary for mass wasting to occur.
question 78 options:
true
false
question 79 (1 point)
deposition of glacial rock flour from blowing winds is responsible for these deposits are extensive in the united states and china.
question 79 options:
deflation ventifacts
star steppes
loess deposits
blowout (desert) pavement

Say whether each of the following statements relates to the influence on weathering by rock composition, rock properties, or climate. 1.exposed rock in the mountains of alaska 2.a lack of fractures in an outcrop3.quartz is rarely affected by dissolution, hydrolysis, or oxidation4.high porosity (a large amount of space between grains in a rock)5.rocks on the coast of a tropical island6.minerals that dissolve in the presence of waterthe good earth/chapter 9: weathering and soils weathering ratesthe good earth/chapter 9: weathering and soilscompositional control1.weathering is faster in rocks composed of weaker material or material that is easily converted to weaker material (such as feldspars)2.weathering is faster in rocks made up of minerals that dissolve in water (salt, gypsum)3.weathering is slower in rocks made of resistant materials (quartz)rock property control1.weathering is faster in rocks that allow air and water in (porous, fractured)2.fractures are natural weathering surfaces3.igneous and metamorphic rocks generally have low porosity –do you think they are particularly susceptible to weathering

Acontinental polar air mass foms in

The ozone hole is at its biggest each year in the ? hemisphere in the ? season.