When The Mermaids Cry: Introduction The world population is living, working, vacationing, increasingly conglomerating along the coasts, and standing on the front row of the greatest, most unprecedented, plastic waste tide ever faced. For more than 50 years, global production and consumption of plastics have continued to rise. An estimated million tons of plastics were produced inrepresenting a 4 percent increase overand confirming and upward trend over the past years.
To set the stage for this activity, ask your students the following questions: What do you suppose environmentally conscious consumers might ask before choosing plastic or paper bags at the grocery store?
Which is easier to transport — plastic or glass soda bottles? After emptying items from either a plastic or paper bag, what happens to the bag? Why do you think people throw away materials that could easily be recycled? Why are landfills filling up at a rapid rate? Why does it take a long time for buried trash to decompose in landfills?
Cut a standard-size paper grocery bag and a standard-size plastic bag with scissors so that both are 12 inches x 12 inches 30 cm x 30 cm. Then, cut them into one-inch 2.
The students should end up with paper squares and plastic squares. Place and pack the paper squares firmly into a 50 ml Pyrex beaker. Place and pack the plastic squares firmly into the other 50 ml Pyrex beaker.
To help pack the squares, cut out a cardboard circle that fits inside the beakers. Use a large, heavy marble to press the squares to the bottom of the beakers.
Record in the Data Table the number of milliliters of space occupied by the paper squares. Remove and weigh the paper squares together.
Record the mass of the paper in the Data Table. Repeat steps 2 — 5 with the one-inch plastic squares. Which is heavier, the plastic or paper bags? Which takes up more space, the plastic or the paper bags? How much more space?
If landfill space were the only consideration, would it be more environmentally correct to package your groceries in paper or plastic? If fuel conservation were the only consideration, would it be more environmentally correct to package your groceries in paper or plastic?
How much space did the paper bags occupy in cubic centimeters? How much space did the plastic bags occupy in cubic centimeters?The Science. Study after study shows that conventional plastic shopping bags are better for the environment than paper bags.
Plastic bags have a much lower carbon footprint than paper. Compared to paper bags, the manufacture of plastic bags is less resource-intensive and .
By Claire Le Guern Last updated in March Introduction.
The world population is living, working, vacationing, increasingly conglomerating along the coasts, and standing on the front row of the greatest, most unprecedented, plastic waste tide ever faced.
The Mass and Volume of Plastic Bags vs. Paper Bags May be used as lesson plan or independent student project This activity makes a great intermediate-level science fair project because it precisely measures volume and the mass of paper and plastic pieces. Welcome to Trash Bag Depot!
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The Leading Plastic Bags Manufacturer and Wholesale Supplier An Phat Plastic is the Best Solution to Shine Up Your Business. Plastic shopping bags, carrier bags, or plastic grocery bags are a type of plastic bag used as shopping bags and made from various kinds of plastic. In use by consumers worldwide since the s,  these bags are sometimes called single-use bags, referring to carrying items from a store to a home.