Mineral Resources: Earth's Rocks Recycling Process

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Questions and Answers

What is the primary purpose of surface mining?

  • To remove shallow deposits by taking out overburden first (correct)
  • To extract mineral deposits from deep underground
  • To preserve the natural topography of the land
  • To use heat and chemicals to extract ore minerals

What are the harmful environmental effects of removing metals from ores?

  • Air pollution and loss of rivers and streams (correct)
  • Decreased biodiversity and increased smelting efficiency
  • Increased aquatic life diversity and groundwater stability
  • Scarring of the land surface and ground disruption

Which mining method involves using cyanide salt to extract gold from its ore, leading to environmental hazards?

  • Contour strip mining
  • Mountaintop removal (correct)
  • Subsurface mining
  • Open-pit mining

What is the main reason for the scarring and disruption of land surfaces as a result of mining?

<p>Formation of spoils banks (B)</p> Signup and view all the answers

Which type of ore contains a profitable concentration of a mineral?

<p>High-grade ore (D)</p> Signup and view all the answers

What is the major concern related to subsurface mining that can lead to acid mine drainage?

<p>Groundwater disruption and subsidence (B)</p> Signup and view all the answers

What is one way to improve mining technology mentioned in the text?

<p>Employing microorganisms (B)</p> Signup and view all the answers

How can mineral resources be used more sustainably according to the text?

<p>Recycle and reuse minerals (D)</p> Signup and view all the answers

What is the main focus of the Nanotechnology Revolution discussed in the text?

<p>Utilizing tiny tech (D)</p> Signup and view all the answers

Which method is NOT suggested in the text as a way to use mineral resources more sustainably?

<p>Increasing resource waste (B)</p> Signup and view all the answers

What is one drawback mentioned in the text concerning high-strength plastics?

<p>They contribute to pollution (D)</p> Signup and view all the answers

What was the primary initiative of the Pollution Prevention Pays program by 3M company?

<p>Reducing hazardous chemicals and pollution (A)</p> Signup and view all the answers

What are the three major types of rocks found in the Earth's crust?

<p>Igneous, Sedimentary, Metamorphic (C)</p> Signup and view all the answers

Which type of rock forms below or at Earth's surface from magma?

<p>Granite (C)</p> Signup and view all the answers

What is the main environmental effect of extracting and using mineral resources?

<p>Land disturbance (C)</p> Signup and view all the answers

Which type of rock is formed by sediments from eroded rocks or plant/animal remains?

<p>Sandstone (D)</p> Signup and view all the answers

What process slowly recycles the three major types of rocks found in the Earth's crust?

<p>Erosion, melting, and metamorphism (A)</p> Signup and view all the answers

What type of rock results from a preexisting rock subjected to high pressures and high temperatures?

<p>Marble (C)</p> Signup and view all the answers

What are the environmental impacts of extracting a mineral resource as we get closer to depleting it?

<p>The impacts generally become more harmful. (B)</p> Signup and view all the answers

What can lead to an increase in the supply of a scarce mineral resource?

<p>Raising the price of the mineral. (A)</p> Signup and view all the answers

What are some ways to deal with economically depleted mineral resources?

<p>Recycle or reuse existing supplies. (C)</p> Signup and view all the answers

What impact can market prices have on nonrenewable minerals?

<p>Market prices can cause supplies to increase or decrease. (B)</p> Signup and view all the answers

What was the purpose of the U.S. General Mining Law of 1872?

<p>To promote mineral exploration and mining on public lands. (A)</p> Signup and view all the answers

What are some factors that limit the mining of lower-grade ores?

<p>Availability of freshwater and environmental impact. (D)</p> Signup and view all the answers

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