Gemstones and Ores: Unearthed Treasures Quiz
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Questions and Answers

What is the purpose of ore processing?

  • Turning ore into coal
  • Separating ore minerals from unwanted materials (correct)
  • Crushing and grinding ore to increase its size
  • Melting ore to form iron ingot
  • Which method involves reducing the ore's size through crushing and grinding?

  • Comminution (correct)
  • Floatation
  • Heavy media separation
  • Magnetic separation
  • What is the main purpose of heavy media separation in ore processing?

  • Separating hydrophobic materials from hydrophilic materials
  • Extracting a desired substance using a solvent
  • Separating products with different densities (correct)
  • Mixing different types of ores together
  • What does magnetic separation use to counteract the effect of gravity on materials?

    <p>Magnetic field</p> Signup and view all the answers

    In which method does a solvent pass through a mixture to extract a desired substance?

    <p>Cyanide heap leaching</p> Signup and view all the answers

    What is the main difference between drift mining and slope mining?

    <p>Drift mining involves cutting into the side of the earth, while slope mining involves a sloping access shaft that travels downwards</p> Signup and view all the answers

    What are gemstones valued for?

    <p>Their sparkle, beauty, and contribution to jewelry, cosmetics, and medicine</p> Signup and view all the answers

    What are ores?

    <p>Rocks that contain valuable minerals like metals</p> Signup and view all the answers

    What is ore genesis?

    <p>The process by which a deposit of ore is created</p> Signup and view all the answers

    What are Volcanic Massive Sulfide (VMS) deposits?

    <p>Deposits rich in ore minerals found on the ocean floor</p> Signup and view all the answers

    What process occurs in the cooling tower in a hydroelectric power plant?

    <p>Steam is condensed back to water</p> Signup and view all the answers

    What does the transformer do in a hydroelectric power plant?

    <p>Increases the voltage of electricity (step-up)</p> Signup and view all the answers

    What is the main source of energy in hydroelectric power generation?

    <p>Flowing water</p> Signup and view all the answers

    Which of the following is an example of conventional natural gas?

    <p>Natural gas found in porous and permeable rock beds</p> Signup and view all the answers

    What is the primary difference between oil and natural gas?

    <p>Oil is a liquid fossil fuel, while natural gas is a gaseous fossil fuel</p> Signup and view all the answers

    What is the primary factor that determines whether natural gas is classified as conventional or unconventional?

    <p>The method used to extract the natural gas</p> Signup and view all the answers

    Which of the following is an example of a renewable energy source?

    <p>Geothermal heat</p> Signup and view all the answers

    What is the primary reason why renewable energy sources are considered sustainable?

    <p>They do not emit pollutants or greenhouse gases</p> Signup and view all the answers

    Which of the following is a characteristic of non-renewable energy sources?

    <p>They are finite and will eventually run out</p> Signup and view all the answers

    Which of the following waste management methods converts waste into energy?

    <p>Waste-to-Energy</p> Signup and view all the answers

    What is the primary purpose of landfills in waste management?

    <p>To provide a site for burying waste materials</p> Signup and view all the answers

    Which waste management method is specifically designed for handling hazardous waste?

    <p>Hazardous waste management</p> Signup and view all the answers

    What is the primary goal of education and awareness campaigns in waste management?

    <p>To encourage environmentally responsible behaviors</p> Signup and view all the answers

    Which waste management method produces nutrient-rich soil that can be used for gardening and landscaping?

    <p>Composting</p> Signup and view all the answers

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