lab 7 It's good to talk trash revised summer online 2013

# 2 weigh your trash with the scale if you have a

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2. Weigh your trash with the scale. If you have a regular scale that you use to weigh yourself, weigh yourself without the garbage first. Then weigh yourself holding your garbage. Subtract to get the weight of just the garbage. 3. Estimate the volume of garbage you collected. Keep in mind that one 13 – gallon trash bag will hold approximately 12 gallons of trash. 4. Now, try to compact your trash, simulate what a garbage truck would do. Now try to estimate the new volume. 5. Categorize what you have collected: glass, paper, plastic, metal, other 6. Count how many items in each category.

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7. Now, take the garbage that you have collected and separate it into two groups: recyclable and non- recyclable. 8. Estimate the percentage of your garbage that could be recycled. RECYCLE if you are able. Wipe down your table before you leave. Name______________________________ Activity Sheet for Trash Lab WEIGHT OF TRASH (pounds) VOLUME OF TRASH (gallons) VOLUME OF COMPACTED TRASH (gallons) VOLUME DIFFERENCE (volume of trash – volume of compacted trash) (gallons) # of GLASS # of PAPER # of METAL # of PLASTIC # of OTHER
VOLUME OF NON- RECYLABE TRASH (gallons) VOLUME OF RECYCLABLE TRASH (gallons) 1. What is the percentage of non-recyclable garbage vs recyclable garbage (Volume-wise)? (For example, 25% of my garbage was non-recyclable and 75% was recyclable.) 2. Can you explain why garbage trucks compact trash? 3. Do you think that the weight of the trash changed after it was compacted? Why or why not? 4. Assume that there are about 12,000 students attending ASU. Using your volume and weight of all your trash, calculate the amount of garbage thrown out daily – both the weight and the compacted volume. Show how you got your answer. 5. Now, take into account the amount of trash that you determined to be recyclable. Was the amount of recyclable trash less or more than the amount of non-recyclable trash? 6. If we were to actually take the recyclable material out of the equation and actually recycle that instead of discarding it, what would the volume of trash (from the ASU students) that is put into the landfill now be? Show how you got your answer.

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7. SUMMARY/CONCLUSION (Please write a paragraph or two.)
• Spring '13
• john
• garbage, gallon trash bag

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