100 Facts Volcanoes – Bitesized Facts & Awesome Images to Support KS2 Learning

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Some domes form pointy spines, while others appear as a giant muffin, as opening flower petals, or as steep-sided stubby flows or tongues. Magma is made of molten rock, crystals, and dissolved gas—imagine an unopened bottle of soda with grains of sand inside. When you climb a cinder cone you can usually find the bowl-shaped crater marking the location of the vent.

There are many more volcanoes on the ocean floor than on land, in fact, ¾ of all volcanoes are underwater. Other volcanoes, such as those of the Hawaiian Islands, occur in the middle of a plate, providing important evidence as to the direction and rate of plate motion.

In some cases, magma rises in conduits to the surface as a thin and fluid lava, either flowing out continuously or shooting straight up in glowing fountains or curtains. Ash, tiny pieces of tephra the thickness of a strand of hair, may be carried by the wind only to fall to the ground many miles away. When Krakatoa, a caldera in Indonesia, erupted in 1883, it had recorded 172 decibels at over 100 kilometers from its place. At any one time there are around 20 volcanoes erupting around the world, some have been erupting regularly for over a thousand years - Stromboli. An active volcano is one that has erupted in the past 10,000 years, a dormant volcano is one that has not erupted in the past 10,000 years but still could, and an extinct volcano is one that has not erupted in the past 10,000 years and is very unlikely to in the future.

With this worksheet, children will need to correctly label the names of famous volcanoes around the world. Lava - Molten rock that comes from a volcanic explosion and the rock that results after it has hardened and cooled. Aside from the fact that it’s extremely active and can produce powerful eruptions, it can bury an unbelievable value of infrastructure as well as risking up to 3 million lives within its area.For example, there are volcanic fields, which are made up of hundreds of individual eruption centres, including cinder cones and shield volcanoes.