Recycling
Recycling is the process of reusing materials from waste products to make new ones. It helps conserve resources, reduce pollution, and save energy.
Why is recycling important?
- Many materials come from finite resources (like metal ores or crude oil)
- Extracting and processing raw materials uses a lot of energy and causes pollution
- Recycling:
- Reduces the need to extract new resources
- Lowers greenhouse gas emissions
- Saves energy
- Reduces landfill waste
Materials commonly recycled
Material | Recycled into |
Metals | New cans, car parts, construction materials |
Glass | Bottles, jars, building materials |
Paper | New paper products |
Plastics | Clothing, carpets, packaging |
💡 Metals like aluminium and copper are especially worth recycling as they take lots of energy to extract from their ores.
Recycling metals
- Saves energy compared to extracting from ores
- Produces less pollution
- Conserves limited supplies of metals
- Often involves melting and reshaping the metal
Recycling glass
- Glass can be crushed, melted, and reshaped
- It can be reused in bottles or insulation
- Saves energy and reduces the need for new materials like sand
Challenges of recycling
- Sorting different materials can be difficult
- Contamination (e.g. food or incorrect items) can reduce effectiveness
- Some materials degrade after recycling (e.g. plastics, paper)
Questions
- Why is recycling metals like aluminium important?
- What does recycling reduce the need for?
- What can recycled glass be turned into?
- What is a challenge of recycling plastics?
- Name two materials commonly recycled.
Summary
- Recycling helps conserve finite resources and protect the environment
- Commonly recycled materials include metals, glass, plastics, and paper
- Recycling uses less energy than making products from raw materials
- It reduces pollution, greenhouse gas emissions, and landfill use
- Challenges include sorting, contamination, and material quality