Draw or verbally depict a cross-section of Earth from the center to the surface including all of its major components
Include important physical characteristics, such as the thickness of the layer, the nature of the rock, approximate temperature, density, and mineral types.
Figure 12.2 is the best guide for answering this question. In general, though: inner core; outer core; Gutenberg discontinuity; lower mantle; upper mantle; asthenosphere; uppermost mantle; and crust.
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Which produces more energy, the fissioning of a single uranium nucleus or the fusing of a pair of deuterium nuclei? Why?
A. Fissioning a single uranium nucleus produces more energy since its mass is much greater than that of a pair of deuterium nuclei. B. Both the fissioning of a single uranium nucleus and the fusing of a pair of deuterium nuclei produce the same amount of energy since the resulting products are the same. C. Fusing a pair of deuterium nuclei produces more energy because, unlike fission, there is no radioactive waste product. D. Neither the fissioning of a single uranium nucleus nor the fusing of a pair of deuterium nuclei produces any net amount of energy. On the contrary, both processes require more energy than they produce.
Which process of the carbon cycle is one that is affected solely by humans?
A. forest fires B. burning of fossil fuels C. photosynthesis D. precipitation E. aerobic respiration
North America is the world's ________
A) First largest continent B) Second largest continent C) Third largest continent D) Fourth largest continent
The worldwide average salinity of seawater is
A) 5‰. B) 35‰. C) 45‰. D) 55‰. E) 75‰.