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   How do volcanoes form?

   • Volcanoes can sometimes form in these setting; one example is Iceland. Iceland lies on the Mid Atlantic Ridge, a constructive plate boundary, where the North American and Eurasian plates are moving away from each other. As the plates pull apart, molten rock (magma) rises up and erupts as lava, creating new ocean crust.

   How volcanoes form - British Geological Survey

   www.bgs.ac.uk/discovering-geology/earth-hazards/volcanoes/how-volcanoes-form-2/

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   What causes a volcano to erupt?

   • Most volcanic eruptions are caused by pieces of the Earth's crust, called tectonic plates, moving towards each other. Some volcanoes, like Mauna Loa in Hawaii are caused by hot spots in the Earth’s crust. These do not erupt violently and lava usually flows slowly out of them. Eruptions from volcanoes can be very dangerous. They can produce:

   Explore volcanoes - BBC Bitesize

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   How do volcanoes form tectonic plates?

   • The magma rises, looking for weaknesses through rocks in the Earth’s crust. Volcanoes are usually found along the boundaries of tectonic plates. Constructive plate boundaries are where tectonic plates are moving apart, and magma here can gradually rise and form new crust, usually without any violent eruptions.

   Explore volcanoes - BBC Bitesize

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   How are different types of volcanoes formed?

   • Different types of volcano are formed according to the properties of the magma that creates them. Volcanic eruptions can be explosive, sending ash, gas and magma high up into the atmosphere, or effusive, producing lava flows and domes.

   How volcanoes form - British Geological Survey

   www.bgs.ac.uk/discovering-geology/earth-hazards/volcanoes/how-volcanoes-form-2/

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   How are volcanic mountains formed?

   • Volcanic mountains are formed when lava erupts on to the Earth's surface then cools and solidifies. In this article you can learn about: This resource is suitable for Landscapes topics for primary school learners. Join Isla and Connor as they explore volcanic mountains and different types of rock in Edinburgh.

   How are volcanic mountains and volcanic rocks formed - BBC Bitesize

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   What type of rock is formed when a volcano erupts?

   • vent The channel inside a volcano that opens up to the surface. When molten rock is underneath or within the Earth's crust, it is known as magma. When it erupts above the surface, it is known as lava. solidify When something becomes hard or solid. This becomes hard igneous rock A rock type formed when magma or lava cool down and solidify.

   How are volcanic mountains and volcanic rocks formed - BBC Bitesize

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2. www.bgs.ac.uk › volcanoes › how-volcanoes-form-2How volcanoes form - British Geological Survey

   www.bgs.ac.uk › volcanoes › how-volcanoes-form-2

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   Learn how volcanoes are related to plate tectonics, earthquakes and magma. Explore the three main types of plate boundaries and the different types of volcanoes they produce.

3. www.bbc.co.uk › bitesize › articlesExplore volcanoes - BBC Bitesize

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   Most volcanic eruptions are caused by pieces of the Earth's crust, called tectonic plates, moving towards each other. Some volcanoes, like Mauna Loa in Hawaii are caused by hot spots...

4. owlcation.com › stem › How-Does-a-Volcano-FormHow Does a Volcano Form? - Owlcation

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   A volcano forms when pressure, temperature, and other natural forces push magma out of a magma chamber (a large, underground pool of liquid rock) until it erupts as lava on the surface of the earth or as a boiling gush under the ocean.

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6. www.bbc.co.uk › bitesize › articlesHow are volcanic mountains and volcanic rocks formed - BBC ...

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   Volcanic mountains are formed when lava erupts on to the Earth's surface then cools and solidifies. In this article you can learn about: How a volcanic mountain is formed....

7. www.bgs.ac.uk › volcanoes › how-volcanoes-formTypes of volcano - British Geological Survey

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   • Why are there different types of volcano? Viscosity is important in volcanology. An eruption of highly viscous (very sticky) magma tends to produce steep-sided volcanoes with slopes that are about 30–35°.
   • Shield volcanoes. Where a volcano produces low viscosity, runny lava, it spreads far from the source and forms a volcano with gentle slopes: a shield volcano.
   • Stratovolcano. Stratovolcanoes have relatively steep sides and are more cone-shaped than shield volcanoes. They are formed from viscous, sticky lava that does not flow easily.
   • Lava dome. The Soufrière Hills volcano, on the Caribbean island of Montserrat, is well known for its lava dome complex at the summit of the volcano, which has gone through phases of growth and collapse.

8. www.nationalgeographic.com › article › volcanoesVolcano facts and information - National Geographic

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   Jan 15, 2018 · Learn how volcanoes form along tectonic plate boundaries or hotspots, and how they erupt in different ways. Discover the dangers and benefits of these fiery peaks, and the largest eruption in history.

9. www.bbc.co.uk › bitesize › articlesVolcanoes - CCEA - BBC Bitesize

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   Volcanoes form when magma reaches the Earth's surface, causing eruptions of lava and ash. Find out about different types of volcano, how to measure their strength and preparing...