For 34 consecutive quarters, HSS has scored in the 99th percentile on âLikelihood to Recommendâ â a key indicator of customer satisfaction in many industries â when compared to similar hospitals in the Press Ganey database. HSS patients come from all 50 states and more than 100 countries.
Let's review. Volcanoes are vents in the earth's crust through which lava, rock fragments, hot vapor and gases are ejected. There are different types of volcanoes based on their size, shape, composition and eruptive style. Composite cone volcanoes are cone-shaped volcanoes composed of layers of lava, ash and rock debris.
Volcanic Rocks. Volcanic rocks are also known as 'extrusive igneous rocks.' We see from their definition that volcanic rocks form on the surface, or 'exterior,' of the earth. If you remember that 'extrusive' and 'exterior' both start with the letters 'ext,' it may help you recall this term.he term 'igneous' comes from the Latin language and is the word for 'fire,' which is a very appropriate name due to the fact that igneous rocks originate from fiery, red-hot magma. We associate magma with volcanoes, yet you don't actually see magma because by definition, magma is located below the surface of the earth.