basic Science Grade 4

What are the main types of waste?

• Plastic Waste

• Organic Waste

• Municipal Solid Waste, Hazardous Waste, Industrial Waste, Biomedical Waste, E-waste, Construction and Demolition Waste

• Radioactive Waste

Which type of waste is biodegradable?

• Organic waste

• Plastic waste

• Metal waste

• Glass waste

What is the difference between hazardous and non-hazardous waste?

• Hazardous waste is dangerous to health or the environment; non-hazardous waste is not.

• Hazardous waste is always liquid; non-hazardous waste is always solid.

• Hazardous waste is only found in industrial settings; non-hazardous waste is found everywhere.

• Non-hazardous waste can be recycled; hazardous waste cannot be recycled.

What is municipal solid waste?

• Hazardous materials disposed of in landfills

• Municipal solid waste is the waste generated from households and businesses in a municipality, including items like food scraps, packaging, and paper.

• Organic waste that is composted exclusively

• Waste generated only from industrial activities

What is e-waste?

• E-waste is discarded electrical or electronic devices.

• E-waste is a type of renewable energy.

• E-waste refers to biodegradable materials.

• E-waste is a form of traditional waste management.

Name a method of waste disposal.

• Recycling

• Incineration

• Landfilling

• Composting

What is composting?

• Composting involves the disposal of plastic and metal waste.

• Composting is a method of burning waste materials.

• Composting is the process of creating synthetic fertilizers.

• Composting is the natural process of recycling organic matter, such as food and yard waste, into a valuable fertilizer.

How does recycling help the environment?

• Recycling helps the environment by conserving resources, reducing waste, saving energy, and lowering pollution.

• Recycling increases pollution levels.

• Recycling has no impact on energy consumption.

• Recycling uses more resources than it saves.

What materials can be recycled?

• Textiles

• Paper, cardboard, glass, metals, plastics, electronics

• Batteries

• Food waste

What is the process of recycling paper?

• The process of recycling paper includes collecting, sorting, shredding, pulping, removing contaminants, and drying.

• Burning the paper to dispose of it

• Using paper directly without any processing

• Mixing paper with plastic for disposal