recycling

• What types of materials are mentioned as being produced for modern life?

  Glass, metals, plastics, and clay ceramics
• From what are these materials produced?

  Raw materials that are in limited supply
• What does quarrying produce that is harmful?

  Large amounts of dust
• What harmful effect can mining have on the environment?

  It can release harmful chemicals
• What is required to turn raw materials into useful products?

  A lot of energy
• What is a common source of energy for processing raw materials?

  Fossil fuels
• Why is it important to reduce the need for raw materials?

  To save limited resources and energy
• What are two methods mentioned to reduce the need for raw materials?

  Reusing and recycling
• What is a consequence of quarrying and mining?

  They are harmful to the environment
• What is one benefit of reusing or recycling materials?

  It reduces the amount of waste produced
• What is an example of a product that can be reused?

  Glass bottles
• What can glass bottles be crushed and remade into?

  Different glass products
• What can plastic bottles be recycled into?

  Fleece jackets and carpets
• How are metals recycled?

  They are melted and cast into different products
• What is a challenge in recycling metals?

  Different metals usually need to be separated
• What can scrap steel be added to in recycling?

  Iron from a blast furnace
• What does adding scrap steel to iron reduce?

  The amount of iron needed to extract from iron ore