Why!! Why are are some volcanoes quiet and violent? Why!!

    Hello, if you don't know how some volcanoes could be violent or quiet , then you should read this blog RIGHT NOW! Okay as you probably now that all volcanoes are not all alike. You know that some eruptions are quiet with lava slowly oozing from a vent and that other eruptions are very violent with lava and other materials being hurled hundreds of miles into the air. Gases from within the earth's interior mix with huge quantities of dust and ash and rise into the air as great dark clouds that can be seen from many kilometers away. Explosive eruptions are caused when lava in the vents hardens into rock and steam and lava builds under the rocks.



  
   When the pressure of the steam and new lava becomes great, a violent explosion occurs. When pressure builds up, eruptions occur. Gases and rock shoot up through the opening and spill over or fill the air with lava fragments. Volcanic eruptions have been known to knock down entire forests. An erupting volcano can trigger tsunamis, flashfloods, earthquakes, mudflows and rockfalls. Why won't check out my video called Volcanoes erupting on the Big Island of Hawaii.