What Causes Volcanoes And Earthquakes?


What similarities are there between the causes of earthquakes and the causes of volcanoes?

What similarities are there between the causes of earthquakes and the causes of volcanoes?

These are both the result of tectonics. The Earth is made up of plates, and where they join up (often at the edges of continents, or where you find mountain ranges) they rub together and create instabilities. Mostly they move very slowly. Earthquakes are often caused by built up pressure being released. (Imagine holding two pieces of sandpaper together and tring to move them, they get stuck and then suddenly slip.)
Volcanoes are created in the same kinds of areas as earthquakes most often occur, at the edges of tectonic plates.

How are earthquakes, volcanoes, and plate boundaries related?

science test.

earthquakes, volcanoes, and plate boundaries are related because the biggest earthquakes or formed by transform boundaries when 2 plates go in opposite directions, volcanoes are caused by convergent boundaries where 2 plates push against each other and create a mountainous surface which with magma generation causes a volcano

If these earthquakes and volcanoes are common then what are the explanations for them?

Not just the earthquakes and volcanoes but what about theses lights falling from the sky and all these comets appearing in the night sky this year? It's like Earth gone wild 2010 edition. I am not feeding for conspiracies,if some one has a deep educational explanation I want to know. If you want to know what I talking about,with the lights and comets falling http://www.youtube.com/watch?v=EC5qtaD9qb0&feature=related If you want to see the list seismic activity that has happened with year http://earthquake.usgs.gov/earthquakes/recenteqsww/Quakes/quakes_all.php

Earthquakes and volcanoes are no more common now than they ever were; but because more of the world is populated now, they do more damage. Floods, drought and heatwaves are more common because of man's activities, like deforestation and CO2 emissions.

what hazards come from divergent boundarys?

science teacher has a project i need help please help if i don't get a good grade on this i will die

At Divergent or Constructive plate margins, hazards are volcanoes and earthquakes.

At the mid Atlantic ridge for example, there are transform faults perpendicular to the ridge, the friction caused by the movement of the rock caused minor earthquakes.

There are also volcanoes on constructive margins, but are usually shield volcanoes, with Basaltic lava due to the silica poor lava, because there is no subduction. These volcanoes are non explosive so not very dangerous, however the silica poor lava does mean it isnt very viscous and can be rapidly moving :)

How are plate tectonics, earthquakes and volcanoes related?

I'm doing a science project and I need to know the 3 form like a cycle them lead to one another.

Plate tectonics is the theory that the earth's crust is made of several chunks (plates) that float on the underlying semi-molten mantle. New crust is made under the ocean at the spreading centers of the mid-ocean ridges. Old crust is destroyed in the deep-ocean trenches, by a process called subduction. Earthquakes and volcanoes are found at boundaries between plates. For example, at the mid-ocean ridges, newly-formed plates are pulled apart. Volcanoes often occur there, like the islands of Iceland and the Azores, which sit right on the Mid-Atlantic Ridge. Earthquakes also occur near mid-ocean ridges. The most powerful earthquakes and volcanoes, however, are found near the trenches, where plates come together. One plate goes under the other and gets pulled into the mantle and remelted. This happens at trenches. Near trenches are volcanic island arcs, like Japan, the Phillippines, the Marianas Islands, the Aleutians. Major earthquakes occur in those regions, like the 1964 earthquake which occurred in the Aleutians but caused a tsunami in Hawaii. And the huge Christmas 2004 tsunami which devastated the Indian ocean was caused by an underwater earthquake near a trench. So plate tectonics causes both earthquakes and volcanoes.

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