Volcanoes

Volcanic eruptions are both hazardous and beneficial to the Environment around it. Volcanic description: Some volcanoes are dormant rendering them to be unable to vomit its lava. Active volcanoes erupt when lava and gas are discharged from a volcanic vent (a hole in the side and/or top). When the rock inside the volcano is melted from the lava, it causes it to explode. The rock inside is made out of magma. Did you know when the density of magma is less than the surrounding rock it rockets to the surface? This can be hazardous to the people who inhabit near the volcano, but the end effect of a volcanic eruption can make the plants get the nutrients they need.

Volcanoes form near a tectonic plate; it can be under water or above water in the ocean. The plates collide causing a mountain to form. Volcanoes are very rare in Australia but they mainly appear in coastal regions. There is a spot in the pacific with volcanoes in a circle (-ish) that they named it “the pacific ring of fire”. There are some hot spots in the Hawaiian Islands and Yellowstone.

The impact of the volcanic eruption effects the environment and people. The three main hazards of a volcanic eruption are lava, ash, and smoke. When lava flows, it wipeouts mountainsides. The lava destroys homes and property, killing some people if they are not aware of it. Volcanic ash can cover land for miles and miles. They can also interfere with air travel. There are microscopic elements in the ash that when you breathe it in, it cuts up your lungs making people and animals to die of lack of blood/drowning.

The eruption of Mount St. Helens is a very historical moment in the 1980’s. Its eruption caused 56 people including David Johnson who radioed the USGS (U.S Geological Survey) base and said “Vancouver, Vancouver, this is it!!” telling them that the blast devastated the northern flank of the volcano. It caused 1.1billion dollars in financial damage. It flattened millions of mature Douglas fir trees over a fan-shaped area 600 square kilometers. Volcanic eruptions cannot be avoided. It could be minimized by not living in that area. People can be aware of the volcano by the earthquakes it makes before it erupts. It is impossible to rebuild where it is destroyed.




Volcanic eruptions come with benefits and terrible, terrible, disasters. They take lives and destroy property. There are some benefits such as feeding the ecosystem with nutrients and creating more grass for deer and other animals to feed off of. They provide useable materials such as metal and pumice. The hazards sometimes outweigh the benefits.

URLs: Here is one it is for St. Helens, another one BAM! It is how volcanoes affect people, take this one ZOOM! Same as BAM! But it’s how it affects society; HERE are the benefits to volcanoes. I did this all on 8/29/2014 around 9:00am – 12:00n