In this video students get to hear and see a really rare volcanic eruption. These are silent killers called limnic eruptions. Limnic eruptions occur when a gas bubble builds up and then gets released poisoning the air all around. This video demonstrates how a limnic eruption killed nearly everyone in two different villages as carbon dioxide was released. I discuss a little bit about air density during this video as well.
During my unit on volcanoes I have the students do some research on some famous volcanoes. Mt. Vesuvius is one. This video shows a quick tour of the city of Pompeii and discusses how they made casts and molds of the victims of a very famous eruption.
I show this video when discussing pyroclastic flows. This is a pyroclastic flow that killed a few people in Japan a couple of years ago. It is pretty impressive video as people try to protect themselves and outrun the flow. I also get to discuss how even though there are many warnings of a pending volcanic eruption occurring, it doesn't always mean that there will be advanced warning.
I have actually been to the Arenal Volcano. It is a beautiful site. The volcano erupted sending down a pyroclastic cloud killing several villages in one of the towns close by. It then erupted off and on creating the steepest cone in the world. This video is a composite of many other videos showing the eruptions over time. It is a pretty cool video to watch. I actually skim through it but get a chance to show how one volcano can have multiple types of eruptions. I also mention that there are many hot springs near by. Some of which I got to swim in.
I show this volcano video when discussing cinder cone volcanoes. Paricutin erupted in the 1943 and erupted for 9 years afterward. It occurred on fairly flat land in a farmer's cornfield. This video is historical footage of the eruption.
I show this volcanic eruption when trying to discuss the different types of eruptions. This one is called a lava dome eruption. Lava Dome eruptions stay pretty close to the vent and are very thick non explosive eruptions.