5 · en
Short, simple sentences with “magma”, suitable for children and primary/elementary school, with common expressions and related words. You'll also find examples for middle and high school.
A volcano is a mountain formed when magma and ash rise to the surface of the planet.
The tectonic plates - which make up the planet's crust - move over the molten magma.
As a result, the rocks melt and form magma, with high components of water vapour, methane, nitrogen oxide and sulphur dioxide.
Occasionally, this magma is pressured by these movements and the masses of energy they generate. It then tries to rise and bursts out through the rocks. A new volcano will appear, or one that has been dormant for years or centuries will "wake up".
Millions of years later, the gems rose to the surface, carried by a stream of magma through a fissure in the earth's crust. Upon colliding with the water layers underground, the magma shot outwards in several volcanic eruptions, scattering the diamonds across the countryside.
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