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科学家关注全球变暖,研究生活在北极圈和南极洲的动物,发现它们身上有厚厚的脂肪层给自己保暖。我们也可以用脂肪做一只暖和的手套。你需要:起酥油,两个一升的拉链密封袋,两碗含冰块儿的冰水,温度计,勺子,计时器或手表,科学日志,铅笔。第一步:将温度计放进冰水碗中,测量温度,并记录下来。第二步:用勺子装半袋起酥油,并将袋子封紧。第三步:将一只手放进另一个袋子里。第四步:打开装起酥油的袋子,将袋子包裹的手放进去,戴上起酥油“手套”。
Scientists focus on global warming, studying animals living in the Arctic Circle and Antarctica, found that they have a thick layer of fat to keep themselves warm. We can also use fat to make a warm glove. You need: shortening, two one-liter zipper sealed bags, two bowls of ice water with ice, thermometer, spoon, timer or watch, science journal, pencil. The first step: the thermometer into the ice water bowl, measuring the temperature, and record it. Step two: Half a bag of shortening with a spoon and tighten the bag. Step 3: Put one hand in another bag. Step Four: Open the bag of butter, put the bag wrapped hands into it, put on shortening “gloves ”.