1. Mount St. Helens By Callum 2. Where is it? Mount St. Helens is located in Washington State. Washington State is in the North West region of the United State and is above…

1.Topographic Maps Topography of Mount Saint Helens from Google Maps (Terrain) 2. Zoomed in view of Mt. St. Helens Caldera - USGS Topographic Map of Mt. St. Helens 3. Prime…

Slide 1 Slide 2  The sequence of events by which rocks are initially formed, altered, destroyed, and reformed as a result of magmatism, erosion, sedimentation, and metamorphism.…

Slide 1 1. One half of the radioactive potassium-40 (K 40 ) in an igneous rock has decayed to argon-40 (Ar 40 ). According to the ESRT, about how many years ago was this…

Slide 1 Volcanoes Slide 2 The Volcanic Setting Subduction zones Rift valleys Hot spots Slide 3 Slide 4 Effusive gentle flows lots of lava Explosive viscous lava trapped gases…

PowerPoint Presentation StratoVolcano Mt Rainier from the west. Stan Shebs. 11/13/13 (http://commons.wikimedia.org/wiki/File:Mount_Rainier_from_west.jpg) Introduction Stratovolcano,…

Ecosystems continually change over time Chapter 3 â Science 10 Ecosystems continually change 3.1 How Changes Occur Naturally in Ecosystems 3.2 How Humans Influence Ecosystems…