What is a hot spot, and how are these natural phenomena explained?
What will be an ideal response?
Answer: Hot spots are areas where molten material rises from deep in the mantle below the moving lithosphere. They are often in the middle of plates, such as Hawaii in the middle of the Pacific plate. Large volcanic islands build up as the Pacific plate moves over the Hawaiian hot spot. A volcano becomes extinct as plate motion carries it away from the hot spot, the area of rising hot mantle, and a new volcano appears in its wake. These are the result of processes not explained by plate tectonics.
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Classify the following metamorphic rocks into low-, medium-, or high-grade based on the minerals present in the rock
• Quartz, biotite, chlorite • Quartz, feldspar, biotite, garnet, sillimanite • Quartz, feldspar, biotite, garnet, staurolite • Quartz, feldspar, muscovite, biotite, chlorite • Quartz, feldspar, muscovite, biotite, garnet • Quartz, feldspar, pyroxene What will be an ideal response?
High drainage density would most likely develop on which of the following rock or soil types?
a. glacial outwash b. shale c. poorly cemented sandstone d. beach deposits
Economic geography is concerned with
A) production. B) transportation. C) communication. D) consumption. E) All of the above
A higher proportion of white daisies on Daisy World can impact the hydrologic cycle leading to
A. lower temperatures, less evaporation, less cloud cover, with less retention of water vapor that could trap more outgoing longwave radiation. B. higher temperatures, less evaporation, less cloud cover, with less retention of water vapor trapping more outgoing longwave radiation. C. lower temperatures, more evaporation, more cloud cover, with the retention of water vapor that could trap more outgoing longwave radiation. D. higher temperatures, more evaporation, more cloud cover, with the retention of water vapor trapping more outgoing longwave radiation.