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These are "Challenge" items, but they relate very much to sustainability and reinterpreting the past. Using NO outside reference sources, apply the knowledge you recorded in the "Basic Quantities Worksheet • Stage 1"and "Stage 2" to determine and record "ball park" quantities for the following measurements or quantities. Include a brief indication of how (from whom, if in a group) you determined the quantities. 1) That 10,000 acre forest fire (see worksheet, stage 3) - first estimate what fraction of Oregon consists of forest. Then determine how much of Oregon's forest is lost in that one fire . (The famous Tillamook Burn, of 1933, consumed 240,000 acres.) 2) An acre, if square, is approximately 210 feet on a side. You've seen big trees in a forest or park such as Mt. Tabor. If you were replanting trees after a fire (or clear-cut harvest), and your trees had a wonderful survival rate of 100%, how many seedlings would you have to plant to restore just ONE acre? How long would it take you to do that? Evergreen seedlings are about 2' long, and you'll need to get your dibble nearly a foot down. 3) How many suburban lots or football fields would it take to fill the same area as that 10,000-acre forest fire? 4) It's 7 pm and you're enjoying the sunset from your campsite near Seaside, which (hint) is directly west of PDX. From traveling by air or watching network TV you know it gets darker earlier in the east. You're tempted to call your friends in PDX and kid them about how much more sunlight you got this afternoon than they did. So when did the sun go down for them? |