NOUN
- an active volcano in the Cascade Range in southwestern Washington; erupted violently in 1980 after 123 years of inactivity
How To Use Mount St. Helens In A Sentence
- Mount St. Helens contained 60 percent or more free crystalline silica — far greater than the actual 3 to 7 percent of the respirable size fraction. Volcanic Ash -- Effects on Health and Mitigation Strategies
- They call it St. Helens since on a clear day you can see Mount St. Helens in the distance. Still Waters
- Rising magma continues to build a lava dome in the crater of Mount St. Helens.
- Scientists say they still have a lot to learn about ecology at Mount St. Helens.
- Mount St. Helens has been an active volcano for about 40,000 years with intermittent periods of dormancy.
- Sinking behind nearby Mount St. Helens, the sun ignited Mount Hood in fiery red alpenglow.
- Spirit Lake is at the base of Mount St. Helens.
- USGS/Jim Vallance This photo of the July 1980 eruption of Mount St. Helens shows an elutriate cloud from pyroclastic flow rising through cloud layer. Nature Unleashed
- They call it St. Helens since on a clear day you can see Mount St. Helens in the distance. Still Waters
- Spirit Lake is at the base of Mount St. Helens.
