![]() ![]() The link above leads to an animation that illustrates how the surface of water interacts with a hill. ![]() Now, it's your turn to create your own topographic map by drawing contour lines. Notice that each contour line has been labeled with the elevation above sea level represented by that contour line. Take note of how the contour lines are drawn because next, you will have to draw contour lines this on your own. The black lines that appear as the water level rises are contour lines. In the movie, the water surface rises and falls. By drawing a line through all locations where the water surface touches the hill, we can create a contour line (a line that connects all points on the hill that are the same elevation or height above sea level). The top of the water surface is a horizontal plane and every location in which the surface of the water contacts the hill is the same elevation. We can use water level to help us visualize contour lines. The most commonly used map for this purpose is a topographic map, which shows the elevations above sea level, using lines, called contours or contour lines, that are easier to create than to describe, so let’s do it!Ĭlick on the link below, which leads to an animation illustrating the interaction between rising water level and a U-shaped hill. ![]() Since the reconnaissance team has returned with their samples, you need to determine where in the canyon they collected them and plot these locations on a map. ![]()
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