Because fault lines are cracks in or spaces between the Earth's tectonic plates that make up the crust (outer layer), and they sometimes move around or over each other, and that makes the earth shake.
These faults are normal(divergent), reverse(convergent), or strike slip(subduction or transform). Divergent causes rock to spread out and rise. Convergent causes the rock to be compressed into a hill, and transform faults(strike slip) go underneath one another which causes the ground to shake.
cuz lava comes out and it forms it around the volcando
because At Fault lines/boundaries sometimes the continental bounderies both push together(some pull apart) it form mountains and if the magma travels up the mountain per se it either erupts or melts away the top hence volcanoes being formed.
in short because the continental boundaries are pushing together
Many volcanoes form near plate boundaries where oceanic crust collide. Through subduction, the older, denser plate sinks beneath a deep-ocean trench into the mantle. Some of the rock above the subduction plate melts and forms magma. Because the magma is less dense then the surrounding rock, it rises toward the surface. Eventually, the magma breaks through the ocean floor, creating volcanoes.
Note: this is not my writing and I take no credit for it. My source is:
Prentice Hall Science Explorer inside Earth book
ADDED:
It's more common where oceanic plate meets continental plate. The ocean plate is subducted below the continent, and the trench marks the flexure of the subducting plate. It is not above the subduction as the answer above suggests. Also, most of the melting is of the sinking plate, not the upper one, though that contributes to the magma too.
Volcano's are located near plate boundaries because that's how volcano's are created. Volcano's are created by the subduction of two plates, the plate that goes up creates a mountain and the plate that goes under can sometimes enter into the mantle and so it melts turning into magma. The magma then gets pushed up through the plates and shoots up through the plate that went up, making it a volcano.
Earthquakes occur along faults when two or more tectonic plates shift. They can move past each other or one can move under another. Both of those cause earthquakes.
No. This is because it is not near the plate boundaries
both volcanoes are located near the African plate boundary
they are formed along the crustal movements of the earth.
Earthquakes and volcanoes are usually found near plate boundaries.
Active volcanoes tend to occur at plate boundaries or in rare cases where there are hot spots in the mantle (such as the one responsible for the volcanism creating the Hawaiian island chain). The UK is not located near a plate boundary or a mantle hotspot! As for large earthquakes, these also tend to occur at plate boundaries and as we have stated above, the UK isn't located near one...
Almost all volcanoes are located along plate boundaries. The exceptions are volcanoes like Kilauea, in Hawaii. Kilauea is not located near a plate boundary. Instead, it is formed by a mantle plume. Again, this type of volcano is much, much rarer than those that form at plate boundaries.
hotspot volcanoes are formed away from the edge of plate boundaries. Plate boundary volcanoes are near a plate boundary
They form near plate boundaries.
Yes. The majority of volcanoes are found near plate boundaries.
along plate boundaries
Most volcanoes appear at the tectonic plate boundaries where friction between the plates and the mantle makes magma which then push through near the plate boundaries forming volcanoes.
yes
yes most volcanoes do from near colliding plate boundries
Not usually. Most volcanoes are located near plate boundaries, but some volcanoes at hot spots do form in the middle of plates. A few include the volcanoes of Hawaii, the volcano at Yellowstone, and the Volcanoes of the Canary Islands.
No. This is because it is not near the plate boundaries
yes it true
Most volcanoes form at either convergent or divergent plate boundaries. Volcanoes at convergent plate boundaries form when one plate slides under another, taking seawater with it. This causes the rock in the mantle to melt as the melting point drops. This new magma can rise to form volcanoes.At divergent plate boundaries the crust is thing, which lowers pressure on the mantle, causing some material to melt.