1. Waste and Disposal

2. Trash – why do we care?
1. The average United States resident creates over 4 pounds of trash per day and up to 56 tons of trash per year.
2. Americans make up roughly 5% of the world’s population, but generate nearly 40% of the world’s total waste.
3. On a daily basis, the United States produces enough trash to fill 63,000 garbage trucks.
4. If every garbage truck we filled (annually) was placed end-to-end, it would cover half the distance to the moon or ~119,450 miles.
7. Today, most communities are spending more on waste management than they are for schoolbooks, fire protection, libraries, and parks.
17. Americans throw out enough plastic cutlery (disposable cups, forks, spoons, and knives) annually to wrap around the equator 300 times, or 7,470,435 milesworth.

3. Trash – why do we care?
32. Annually, more than 14 billion pounds of garbage is dumped into the world’s ocean (mainly marine life toxic plastic).
33. The Great Pacific Garbage Patch, or Pacific trash vortex, is a collection of marine debris in the North Pacific Ocean. According to some estimates, the patch can be as large as twice the size of the US and would take 67 ships one year to clean up less than 1% of the garbage mass.
children live in the US, but Americans buy (and throw away) 40% of the world’s toys.
36. In the United States alone, over 140 million cell phones are thrown into landfills every year.
40. Annually, Americans throw out old phones containing over $60 million in gold and/or silver.

4. Incineration Definition: The burning of solid waste Advantage:
burning reduces the size of waste
Heat produced can be used to create electricity
Disadvantage:
Air pollution

5. Sanitary Landfill
Definition: holds municipal solid waste, construction debis, and some types of agricultural industrial waste.
Advantage: no air pollution, when full they cover it and can be used to make parks.
Disadvantage: ground and water pollution when chemicals leak out of the landfill.

6. Recycling
Definition: the process of reclaiming raw materials and reusing them to create new products.
You can recycle: metal, plastic, glass, paper
Advantage: reduces the volume of solid waste
Disadvantage: uses energy (usually fossil fuels) to make the item resuable.

7. Biodegradable
Definition: Material that can be broken down and recycled by BACTERIA and other decomposers.

8. Sewage
Definition: The water and human wastes that are washed down sinks, toilets, and showers.

9. Pesticides
A chemical that kills crop- destroying organisms.

10. Types of Heat Transfer

11. Types of Heat Transfer

12. Types of Heat Transfer

13. Conductor VS Insulator