Which of the following contains only transition metals?
A) Ca, Cr, Fe, Ni,
B) V, W, Xe, Zr
C) Cr, Mo, Ni, Pt
D) none of these
C
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Resisting strength is greater when
A) bedding planes are parallel to a hillside. B) water percolates into rock along joints. C) bedding is not parallel to a hillside. D) shale weathers to clay minerals.
Communities, municipalities, or urban areas in a metropolitan area that are separated by rural territory from the principal urban area are known as ________
A) The urban core B) Suburban C) Exurban D) Growth cities
A rock outcrop exposes a layer of obsidian overlain by volcanic ash and a layer with fragments of lapilli. What rock composition and eruptive type fits this description?
A) andesite and basalt erupted from a stratovolcano B) basalt erupted from a cinder cone C) basalt flows and interbedded andesite deposited on a shield volcano D) rhyolite erupted in violent pyroclastic eruptions
In addition to cutting laterally, streams can also cut downward in their channels to form deep valleys and canyons. What best explains how streams can cut downward through solid rock?
A. water flowing rapidly over the bedrock causes erosion. B. acidic water causing chemical weathering of the bedrock. C. physical weathering of bedrock by freeze and thaw action. D. transported sediment causes abrasion of bedrock. E. occurs in areas where streams encounter weaker layers of bedrock.