Waste in Our World

Methods of Waste Disposal

• organic waste

  food

  liquids

• Recycling

• paper

  glass

  cans

• Compost

• solid waste

  furniture

• Landfill

Tags

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Advantages and Disadvantages of Landfill, Recycling and Composting

• Disadvantage: may attract pests

• Advantage: Landfills provide a safe and controlled way to dispose of waste.

• Disadvantage: energy-intensive

• Advantage: Composting reduces the amount of waste going to landfills and produces nutrient- rich soil

• Disadvantage: can produce harmful gases

• Advantage: Recycling stations help conserve resources and reduce the need for raw materials

Tags

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Sort these items as Biodegradable or Nonbiodegradable

Groups:

(a) Biodegradable

,

(b) Nonbiodegradable

• plants

• animals

• dead bugs

• styrofoam packaging

• wooden sticks

• fruit and vegtables

• tin cans

The waste produced by households and businesses is –

• Miscellaneous waste

• Machinery waste

• Municipal waste

• Multiple waste

What are the 3 Rs of waste management?

• Recycle, React, & Respond

• Reduce, Reuse, & Recycle

• Reuse, Rinse, & Repeat

• Reduce, Reapply, & Rethink

Tags

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Shredded paper, tea leaves, coffee grounds, yard trimmings are -

• reusable

• recyclable

• compostable

• go to the landfill

Permanent waste-disposal facilities where wastes are put in the ground and covered each day with a layer of soil, plastic or both, are called -

• Incinerators

• Landfills

• Trash cans

• Bins

Tags

NGSS.MS-ETS1-1

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Discarded solid material is best known as -

• solid waste

• poison

• pollutant

• compost

Tags

NGSS.MS-PS1-3

A ____________ is a waste disposal facility where wastes are put in the ground and covered each day with a layer of dirt, plastic, or both.

• landfill

• incinerator

• compost heap

• aquifer

What are the benefits of composting?

• Reduces waste going to landfills.

• Provides nutrients to the soil.

• All of the mentioned.

• Reduces the need for fertilizers and pesticides.

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-3