What Is Waste?
What is the definition of waste?
Waste is anything unwanted or unneeded, commonly referred to as trash or garbage.
True or false. Everything is made up of matter.
True
Which type of waste is soapy water?
Liquid waste.
True or false. Particles don't move.
False
What is water in a form of a gas?
Steam/ water vapor.
Name three types of waste
Solid, liquid, and gas waste.
Can we see matter directly from our human eyes?
Yes
What type of waste are these: Used tires.
Solid waste.
What do the particles look like in a gas? (Draw it on your board)
They are far apart with a lot of space.
Name one type of packaging that can be recycled
Cardboard
Give an example of solid waste
Old toys or food scraps or others
What is matter made up of?
Particles
True or false. Hazardous waste can be thrown out into a regular landfill.
False
What do the particles look like in a liquid? (Draw it on your board)
They are closer together but still have space between them.
True or false. Humans have all 3 states of matter in their bodies.
True!
Our body is about 60% water! You will be able to find solids (bones), liquids (water, blood, stomach acid), and gasses (oxygen in your lungs or air in your digestive tract)
What type of waste includes emissions from burning fuels?
Gas waste.
What are the three states of matter?
Solid, Liquid, Gas.
What are organic materials? Give an example.
Organic materials are waste produced by living organisms, such as banana peels.
What do the particles look like in a solid? (Draw it on your board)
They are really close together with little space between them.
Name a material that can be composted.
Fruit or vegetable scraps.
What process breaks down organic waste and returns nutrients to the soil?
Composting.
What is matter?
Any substance that has mass and occupies space.
Name one example of recyclable materials
Glass bottles or metal cans. others?
What is the particle theory?
The Particle Theory
The particle theory tells us that everything is made up of tiny particles that are:
▪ Always moving
▪ Attracted to each other
▪ Have spaces between them
Explain what a decomposer does.
A decomposer breaks down the organic material to create compost.