My daughter needs to make a map or model of a mountain
using contour lines. please give anu suggestions.
Your daughter could draw a topographic map of the mountain.
Some topographic maps are available on the internet. Go to
www.topozone.com and enter the mountain name.
Another technique is a relief map. Use pieces of
thin cardboard (like what is used at the back of a pad of paper)
and cut them out along contours, like every 500 feet. Paste these
on top of each other to get a relief map of the mountain. Use a
topographic map to trace the shape of each 500 foot contour and to
align the layers correctly.
Argonne National Laboratory
I'm not exactly sure what your request means. If your daughter needs to
make a map of a mountain with contour lines, she needs a data set from
which to construct it, for example a fairly tight grid with altitudes given
for each intersection point. Then it almost becomes an exercise of connect
the dots, all the points at 100 ft become one contour, 150 ft another, etc
etc. There is some art to it, because the actual data points will be
random heights, e.g. 95, 113, 142, so you have to draw your lines between
points, e.g. your 100 ft contour likely runs a little closer to the 95 ft
point than the 113, but goes between them.
If she already has a contour map, then she can construct a rough model,
much like architecture students do. You can enlarge a contour map by xerox
or overhead projector, and trace the contour lines onto foam core
board. Each successive contour height becomes one layer. Cut out the
contour shape. Each layer should have that contour plus the next higher
contour so that you can line them up. Stack up the layers, and you have a
3-d model of the mountain. The polystyrene foam sheets for meat packages can work
for cutting out a really small model, or thin sheets of foam insulation
from a home improvement center can work too if you want a bigger scale.
Hope that helps.
Donald Yee Ph.D.
Find an object that has a contour like a mountain. Some shells, figurines
of frogs, or other objects will do. The object should not float in
water. Place this object into a shallow tub or pail. Place a transparent
material across the top of the tub. Plastic sheeting works well, and
should be taped to one side of the tub. Trace the outline of the object
(in projection) onto the plastic. Add water to the tub to a depth of 1.0
cm (look from the side, or have a ruler in the tub). Draw the new contour
line around the object. Once again, fill to 2.0 cm. Continue to draw the
contours at each interval until the object is totally submerged. What you
have is a 1.0 cm contour map of the object.
I hope this helps!
Nathan A. Unterman
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Update: June 2012