Volcanoes - Earth Changing Quickly

Composite Volcanoes
Home
Vocabulary
Composite
Shield
Cinder-Cone
Volcano Fun

shinshaldin.jpg
Shinshaldin in an example of a composite volcano

Composite Volcano
  • The most common of volcanoes
  • Made up of layers of lava and ash
  • Alternates between quiet and explosive eruptions
  • Over time layers build up to form a cone shape
  • This type of volcano is usually symmetric

Mount St. Helens

  • Mount St. Helens is a composite volcano located in the state of Washington in the United States. 
  • On May 18, 1980 it erupted.

Assignment:  Compare the before, during, and after pictures.

Mt. St. Helens Today
msh82_st_helens_spirit_lake_reflection_05-19-82_med.jpg

Before the Eruption
before.jpg

During the Eruption
during.jpg

After the Eruption
after.jpg

Images courtesty of http://vulcan.wr.usgs.gov