Volcanoes

Volcanoes can be one of the most destructive forces on Earth. It is estimated that some 500 million people live near active volcanoes (Lutgens and Tarbuck, 2013). Of the Earth's known volcanoes, 70 can be expected to erupt each year with at least one large eruption each decade (Lutgens & Tarbuck, 2013). As populations continue to increase and more people are attracted to the beauty surrounding these areas, the immediate threat to humans from these sometimes sleeping giants grows. Due to

many different types of volcanoes in the United States. Composite, Ciner and Shield are the three types of volcanoes. Over the history of Hawaii, covering about 85 million years, there have been 129 volcanoes formed due to the hot spot and of that 129, 123 of them are extinct or seamounts. In Hawaii today, there are currently five active volcanoes, Lo'ihi, Kilauea, Mauna Loa, Hualalai and Haleakala. Lo'ihi is the only underwater volcano in Hawaii; the other four volcanoes are above sea level. Kilauea

the unusual heat of this mantle material, it melts, forming magma just under the earth's crust. The hot spot itself is stationary; but as a continental plate moves over the spot, the magma will create a string of volcanoes, which die out once they move past the hot spot. The Hawaii volcanoes were created

Volcanoes A volcano is a mountain that descends into a pool of molten rock below the surface of the earth. When pressure builds up, eruptions occur. Various gases, rocks, and lava shoot up through the opening, or vent, and spill over the land or pollute the air. Eruptions can cause damage to the environment and make places uninhabitable. Scientists have researched volcanoes for centuries to find the positive and negative effects volcanoes can have on the world and how to predict disasters. Volcanic

Imagine hiking up a dormant volcano and all of a sudden the volcano starts to rumble What’s the cause? The cause of the volcano occur when an underground chamber overflows creating an explosion out the top of the volcano. Volcanoes can have effects on the land and its people. When volcanoes erupt they can have some drastic but beautiful changes to the earth. The author of the informational article, Russell McDonaugh, states that “Depending on the location of the volcano, it can take thousands of years of

Geologic Processes Volcanoes are one of the most beautiful and yet destructive forces naturally occurring on our planet. As the Earth’s population continues to grow, more people move closer and closer to volcanoes. Currently, an estimated 500 million people from Japan to Indonesia, and from Italy to Oregon, live near active volcanoes. Each year, approximately 70 volcanoes will erupt, and usually at least once every ten years, there will be a large volcanic eruption that puts the people living both

The majestic mountain towers over the Washington state landscape and can be visible from most vantage point in the Seattle metro area. See the main Seattle page here. Mt. Rainier is an active volcano that is always topped with snow. It has 26 main glaciers - the most on any mountain in the lower 48 US states. It is more than 14 thousand feet high and spawns 6 major rivers and many waterfalls. The national park around the mountain was established in 1899 as the fifth national park in the United

During the Big Island trip, I learned the predictiction of volcanic eruptions, the study of volcanoes, and the effects of a volcanic eruption. To start off, the Big Island is known for its active volcanoes, meaning it constantly erupts and spews lava. Geologists actually has a way to forecast the eruption of the volcanoes. “Seismometers can be used to pinpoint earthquakes which track the rise of magma and its movement along fissures.” (volcanoworld) This means that geologists uses seismometers in

eruptions are marked by columns of gas and volcanic ash extending high into the stratosphere, a high layer of the atmosphere. The key characteristics are ejection of large amount of pumice and very powerful continuous gas blast eruptions. Risks Volcanoes release volcanic hazards that may cause the life of human kind to be in danger. These volcanic hazards are Pyroclastic Density Currents (pyroclastic flows and surges), Lahars, Structural Collapse: Debris flow-Avalanches, Dome Collapse and the formation

Although scientific understanding of volcanoes is advancing, eruptions continue to take. A substantial toll of life and property. Some of these losses could be reduced by better. Officials and better understanding of volcanic behavior, by all segments of the public. Advance preparation, more effective flow of information between scientists and public. The greatest losses generally occur at volcanoes that erupt infrequently where people are not accustomed to dealing with them. Scientists