Distribution of volcanoes:There is a ____ between the location of ____ and distribution of major active volcanoes.Volcanoes are distributed along the edges of the Pacific Ocean where the Pacific Ring of ____ is located. The Pacific Ring of Fire is found along boundaries of several ____ plates such as Pacific Plate, Nazca Plate and the Australian Plate. Volcanoes are also found at places where tectonic plates are ____ such as Atlantic Ocean and East Africa. Distribution of the Pacific Ring of Fire:Pacific Ring of Fire refers to a chain of active ____ located on the ____ plate boundaries of the Pacific Plate with several other plates such as Nazca plate, Philippine plate and Eurasian Plate. It forms a horse-shoe shape along the edge of the ____ Ocean. On the western side of the Pacific Ocean, it starts from New Zealand and stretching westwards to the Indonesian islands and turns north to the Philippines, ____ and the Kurile Islands. This line of volcanoes then stretch across the Aleutian islands towards eastern edge of the Pacific Ocean. Then it runs southwards along the eastern edge of the Pacific Ocean, stretching down the western coasts of ____ and South America. Describe formation of volcano: ____ builds up in the magma chamber. The pressure in the ____ builds up and gives rise to a volcanic eruption. The strength of the volcanic eruption depends on the amount of ____ built within the volcano. When a stratovolcano erupts, gas and ashes are released. The eruption from a shield volcano flows ____ because the lava does not trap much gas. Each volcanic eruption of lava covers the previous layer and this builds up the ____. ____ builds up around the vent, solidifying to form a small volcanic cone. The bowl-shaped opening is called the ____. A ____ cone may develop when the vent becomes blocked. This forces the magma to find a new exit route to the surface.

Distribution of volcanoes and Pacific Ring of Fire

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