Using Resources

    Cards (19)

    • Materials like wood, fuels, and fabrics are examples of natural resources.
    • What are resources used for in daily life?
      Warmth, shelter, food, transport
    • What is sustainability in the context of resource use?
      Meeting current needs without compromising future generations
    • Steps in water purification to make it potable
      1️⃣ Filtering to remove large insoluble particles
      2️⃣ Sterilization to kill microbes
    • Clean drinking water is taken for granted by many people worldwide.
      True
    • Potable water is water that has low levels of salt and microbes.
    • Reverse osmosis requires a significant amount of energy.
      True
    • What are three methods of sterilization used to purify water?
      Chlorine, ozone, UV light
    • Distilled water is dangerous to drink in large amounts because it lacks dissolved solutes.
    • Why does water move into cells during osmosis?
      To balance solute concentration
    • Steps in wastewater treatment
      1️⃣ Screening and grit removal
      2️⃣ Sedimentation to produce sludge
      3️⃣ Anaerobic digestion of sludge
      4️⃣ Aerobic respiration of effluent
    • Sludge from wastewater treatment is treated using anaerobic digestion.
    • What are two methods of extracting metals from their ore?
      Electrolysis, displacement reactions
    • Phyto mining and bioleaching yield large quantities of metal.
      False
    • Match the metal extraction method with its description:
      Phyto mining ↔️ Uses plants to absorb minerals
      Bioleaching ↔️ Uses bacteria to create leach solutions
    • An LCA predicts a product's impact on the environment.
    • What are the stages considered in a life cycle assessment?
      Extraction, manufacturing, use, disposal
    • Glass and metal can be recycled indefinitely.
      True
    • How can we reduce the environmental impact of products?
      Reduce use, materials, energy, waste
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