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WHAT POSSIBLE PRACTICAL APPLICATION COULD THIS HAVE? Here's something fun to do while you're on your winter vacation and playing in the snow gets too boring: Obtain two dowels of the same diameter and length. Sharpen one end of each dowel so that it can be driven or pressed into packed snow. Paint one stick black and the other one white. On a sunny day when there is a good snow cover, press the two sticks upright into the snow to the same depth, but several feet apart from each other. Check the dowels and the snow around them every few hours. You will observe that the snow area around the black dowel melts more than the snow area around the white dowel. Look for everyday examples of the same phenomenon. Check the area around tree trunks, weeds, and posts sticking through the snow and around various objects that people drop on the snow. Also cut several identical squares from different squares of construction paper. On a sunny day, place the squares on a clean snow surface, and observe them every hour to see which color square shows the smallest effect from exposure to sun. How can we put this information to good use? Maybe we're getting close to the idea. Fill two identical glasses with equal amounts of water. Wrap a sheet of white paper around one glass and a sheet of black paper around the other. Put identical thermometers in each glass, and set the glasses in direct sunlight. Take tempera- ture readings every ten minutes. The data can be graphed. How is "data" pronounced? "DAY-tah." Is it a singular or a plural word? Plural. (Singular is datum --"DAY-tum"). You will find that the water in the glass wrapped in black paper warms more quickly. Next, try papers of various colors, and compare the results. Discuss the advantages and disadvantages of wearing clothing of certain colors at different times of the year. There must be a better reason than wardrobe selection for These snow projects.  Any problems with this page? Send URL to
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