Chapter 4 Earth Science

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Across
  1. 2. The study of earth's structure, materials, and processes.
  2. 4. Hot, plastic rock that fills the interior of many rocky planets and some natural satellites.
  3. 6. The solid, relatively low-density outermost layer of rocky planets and natural satellites. It lies under loose surface materials and the oceans.
  4. 7. The idea that the earth is ancient-billions of years old. A secular approach.
  5. 9. Any raw material from the natural environment that we can use.
  6. 10. A natural resource that has an unlimited supply or that can be easily replenished.
  7. 11. The boundary between the earth's crust and mantle
  8. 12. A natural resource that people cannot replenish.
Down
  1. 1. The belief that all geologic processes are natural. Can be summed up by "The present is the key to the past."
  2. 3. Efforts to wisely use natural resources.
  3. 5. The upper mantle and the crust that move together with tectonic plates.
  4. 8. In Earth, the dense, extremely hot central region of the earth's interior consisting of two parts.