Question

(e) Describe volcanoes. How do they form mountains?​

Answer 1

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✒ Describe volcanoes.

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✒ A volcano is an opening in the earth's crust through which lava, volcanic ash, and gases escape. ... Beneath a volcano, liquid magma containing dissolved gases rises through cracks in the Earth's crust. As the magma rises, pressure decreases, allowing the gases to form bubbles.

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✒How do they form mountains?

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✒ Most mountains formed from Earth's tectonic plates smashing together. Below the ground, Earth's crust is made up of multiple tectonic plates. ... On average, these plates move at a rate of about one to two inches each year. When two tectonic plates come together, their edges can crumple.

Answer 2

Answer:

Volcanic mountains are formed by volcanoes.

• Volcanic mountains are formed when molten rock (magma) deep within the earth, erupts, and piles upon the surface.
• When the ash and lava cools, it builds a come of rock. Rock and lava pile-up, layer on top of layer.