Three-dimensional Cardboard Volcanoes

Mount St. Helen’s. Photograph courtesy of U.S. Geological Survey.

Three-dimensional cardboard volcanoes require more work but the results are more realistic. They require some knowledge of topographic maps. Because the construction of this model requires the use of a razor-blade knife it may not be appropriate for elementary school students.

To make a three-dimensional cardboard volcano you will need:

A razor-blade knife

A photocopy of the topographic map of your favorite volcano

Tape or spray glue

Paint (optional)

Step 1. Selecting a Volcano

Topographic maps are available for all the volcanoes in the United States. They can be ordered from the U.S. Geological Survey. Many local bookstores and outdoor recreation stores also sell topographic maps. Your model could also be made of a favorite volcano or the one that is closest to your home or school.

Step 2. Creating a Pattern.
Get a simplified topographic map.

Step 3. Cutting Layers. The number of layers (pieces of cardboard) to your volcano depends on the scale (contour interval) of your map and the amount of time you wish to invest in making your model.
Repeat for each layer.

Stack the layers in order of descending elevation.

By the time you are done you will cut out a pattern for each elevation, trace it on the cardboard, cut it out and stack it. You'll be tired of cutting out cardboard.

Tape or glue the layers in the appropriate (descending elevation) order. Label the elevation of each layer.

Notice the crater and the major river valleys cut into the volcano. Compare your model to actual photos of your volcano. Compare your 3-D map to the original simplified topographic map.

Volcano World, http://volcano.und.nodak.edu/vwdocs/volc_models/three_d.html