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Further Investigations: Layers of Earth

  1. Construct a model of the earth showing its layers and their properties.
     
  2. Table 7.1 lists the thickness of each layer of Earth. Calculate the volume (in km3) and percentage of total volume of each of the layers of the earth. Prepare a table of results and report your findings to your class.
     
  3. What is the big bang theory, and how can we use the layers of the earth to reinforce this theory?
     
  4. Research the boundary between the oceanic crust and the mantle below it, also known as the Moho or the Mohorovičić discontinuity. What does the behavior of seismic waves tell us about the composition of this layer?
     
  5. Investigate geomagnetic reversals.
    1. What is a geomagnetic reversal?
    2. What are some examples of geomagnetic reversals in Earth’s history?
    3. What evidence supports these findings?
       
  6. How do electric currents generate magnetic fields, and what are some of the ways that we can detect these fields?

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Exploring Our Fluid Earth, a product of the Curriculum Research & Development Group (CRDG), College of Education. University of Hawaii, 2011. This document may be freely reproduced and distributed for non-profit educational purposes.