Sample 8th Grade STARR Question

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A balance and a graduated cylinder are used to determine the density of a mineral sample. The sample has a mass of 14.7 g and a volume of 2.2 CM3. Find the Density.

corresponding TEEP Activity

Porosity and Permeability of Rock:

Soak small pieces of gym chalk, marble, pumice, granite, sandstone and shale in water and then weigh and compare.

Career building questions

  1. Oil, gas and water may be held in and move through rocks. How is this possible?
  2. Which type of rock has the potential to hold the most water, oil, or gas? Explain why.
  3. If you were looking for a rock formation to hydraulically fracture to find oil or gas, which type of rock formation would you choose and why? (Hint: think about how porous each of these rocks is and how each was formed.)
  4. When a well is drilled and fracked, it often goes down through many layers of rock, including sandstone, shale and limestone, before reaching the layer of shale that contains oil and gas. Concrete is poured down around the outside of the well, forming a casing all the way down. Why is this important? (Hint: think about the porosity of the different kinds of rock.)