Question 1
Which one of the following statements concerning mechanical weathering is
not true?
◦ reduces grain sizes of rock particles
◦ is important in the formation of talus slopes
◦ allows for faster rates of chemical weathering
◦ involves a major change in the mineral composition of the weathered material
Question 2
Rounding of angular edges of rock outcropping and formation of in situ, spherical boulders are both indications of ________.
◦ rock fall onto sharp edges breaking of angular corners of rock outcrops
◦ dissolution of the rock surface by acid rain
◦ chemical weathering and associated spheroidal weathering
◦ humans and animals walking across the Earth's surface, wearing away the surface