Look ahead to Figure 19.24, which shows three beach deposits. If each deposit became a rock, what would be the name for each rock formed? Be as specific as possible in selecting a name
What will be an ideal response?
(a) would be called a quartz sandstone because the grains are sand-sized and since most are made up of quartz, I would put quartz as a modifier in front; (b) would be called a lithic sandstone because the grains are sand-sized and made up of basalt; (c) would be called a fossiliferous limestone because it is made up of shell fragments and these are made up of calcite and the cement would most likely be calcite (also could be called coquina, although that term is not used in How Does Earth Work?).
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Which of the following elements has two valence electrons?
A) Na B) Mg C) H D) Ne E) Li
How does material in soil move?
A. Clay minerals and other fine particles are carried downward. B. The upper part of soil loses material downward. C. Calcium carbonate can accumulate in the soil, especially in dry environments. D. Chemical ions leached from above can accumulate in the underlying zone. E. All of these choices are correct.
Increased interest in the oceans' biodiversity is due to ________.
A. lack of knowledge of the total numbers of ocean species B. the loss of species from the land portions of the planet C. the variety of habitats within the oceans D. All of these are correct. E. None of these is correct; there is no increasing interest.
Which of the following is not the name of a supercontinent?
A) Gondwana B) Laurasia C) Pangaea D) Rodinia E) Tethys