WIND Tracking.Does wind direction vary with altitude altitude, vertical distance of an object above some datum plane, such as mean sea level or a reference point on the earth's surface. It is usually measured by the reduction in atmospheric pressure with height, as shown on a barometer or altimeter. ? Design a nephoscope (cloud-direction indicator), and see for yourself! WHAT YOU NEED * round mirror * glue glue: see adhesive. glue Adhesive substance resembling gelatin, extracted from animal tissue, particularly hides and bones, or from fish, casein (milk protein), or vegetables. * cardboard Cardboard is a generic non-specific term for a heavy duty paper based product. Paperboard
Paperboard is a paper based material. It is often used for folding cartons, set-up boxes, carded packaging, etc. * compass WHAT TO DO 1. Glue a round mirror to a piece of cardboard. 2. Mark the points of the compass (Naut.) the thirty-two points of division of the compass card in the mariner's compass; the corresponding points by which the circle of the horizon is supposed to be divided, of which the four marking the directions of east, west, north, and south, are called cardinal points, and on the cardboard around the mirror as shown. 3. Glue a circle the size of a dime in the center of the mirror. 4. Place the cardboard on a level place outdoors. Find north with your compass. Now position your nephoscope so that its heading for north aligns with the compass. 5. Look down at the mirror. When you see a cloud crossing the dime-size circle, follow it until it reaches the edge of the mirror. At this point, you'll you'll Contraction of you will. you'll you will or you shall you'll will see a heading marked on the cardboard. This is the direction the wind is blowing toward. (Remember, winds are named for the direction they come from: northeast winds blow from a northeast direction.) CONCLUSION Do clouds always move in the same direction? DON'T STOP NOW! Do the clouds you see in your nephoscope move in the same direction as the wind around you? How can you find out? |
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