Geol Exam 2

Which of the following statements best describes erosion?

What portion of an angular, fracture-bounded granitic block shows the highest rate of weathering?

Which one of the following statements concerning soil erosion is not true?

Which term best describes all the processes that move weathered rock materials and soil downslopes?

Why is the humus layer typically thicker in a cool, temperate forest soil than in a tropical rainforest soil?

Which regolith material results from frost wedging?

Which of the following materials is/ are most susceptible to chemical weathering by dissolution?

Which of the following is an important mechanical weathering process for enlarging fractures and extending them deeper into large boulders and bedrock in temperature and arctic environments?

What two factors speed up rates of chemical reaction and weathering in rocks and soils?

During the 1930s, the United States suffered its greatest natural catastrophe. What great natural disaster affected both the farmers and the urbanites and led to the creation of the Soil Conservation Service?

Which of the following best describes the process of minerals subtraction or W?

Which of the following statements concerning mechanical weathering is not true?

From the land surface downward to the unweathered bedrock, which of the following is the correct order of the different soil horizons?

Which term describes a soil formed by weathering of the underlying bedrock?

Which of the following best describes sets of fractures in relatively fresh bedrock, such as granite, that are roughly parallel to the land surface?

which of the following statements concerning humus is not true?

Assume that water filling a crack in a rock undergoes cycles of freezing and melting. Which of the following statement is true?

What process creates finely divided red, brown, and yellow minerals in soils?

What causes the P- wave shadow zone?

What is the upper layer of the lithosphere called?

which rock type listed below is probably closest in chemical composition to the upper mantle?

which layer of earth is very dense and solid and consists most likely of an iron-rich alloy?

which of the following best characterizes how the diameter of earth's core and the nature of the outer core were discovered?

which one the following best characterizes the asthenosphere?

which layer of earth has the smallest volume?

which of the following are probably major components of earths inner core?

Which structure in Earth is thought to be caused by a change in the mineral structure of olivine?

What is the best evidence of earth having a solidifies inner core?

Which one of the following statements concerning Earth's magnetic field is true?

Which layer of Earth does not transmit S waves?

Which of the following is the result of convection within the mantle?

Which of Earth's layers is marked at its top by the Mohorovivic discontinuity?

Where does Earth's magnetic field originate?

which of the following rocks are closest to the average chemical composition of the oceanic crust?

Which of the following includes the zone called the "asthenosphere"?

What causes Earth's magnetic field?

who discovered the crust mantle seismic discontinuity? in what year?

which layer of earth transmits P earthquake waves but not S earthquake waves?

Which of the following describes Earths magnetic field/