Volcanoes of Oregon

Volcanoes of Oregon

Explore the science behind the powerful forces that shape our landscape. Using the Cascade Mountains as a guide, investigate the differences between composite and shield volcanoes, examining their shapes, lava flow rates and igneous rock formations.


Elementary school students and families


Baking soda, vinegar, shallow cup, flour, water, salt and mixing bowls. Recipes for each volcano is below:

Shield Volcano: Place 1 tbs. baking soda in shallow cup and add 3 tbs. vinegar

Composite Volcano: Mix 1c flour with 1c water

Salt dough: Mix 1c flour and 1c salt with composite volcano dough

NGSS Content Standards

2-ESS1-1. Use information from several sources to provide evidence that Earth events can occur quickly or slowly

2-ESS2-2. Develop a model to represent the shapes and kinds of land and bodies of water in an area

4-ESS1-1. Identify evidence from patterns in rock formations and fossils in rock layers to support an explanation for changes in a landscape over time