How Do ‘Volcanoes’ Form and What Makes Them Erupt?

Volcanoes are like giant, fiery fountains under the Earth’s surface. They form when hot rock, called magma, pushes up from deep inside the planet and breaks through the ground. When the pressure gets too high, it erupts with a big boom, like a firehose shooting lava out of the ground! Some volcanoes are quiet, like sleeping giants, while others are loud and messy, exploding with smoke, rocks, and ash.

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Examples

A volcano erupts like a soda bottle shaken and opened. When you shake up a carbonated drink, it builds pressure inside, and when you open it quickly, the fizz explodes out.
Mountains are like volcanoes that have gone to sleep. They form from layers of hardened lava and rock that pile up over time, just like building blocks.
Volcanic eruptions can be as loud as thunderclaps. The sound comes from the explosive release of gas and rock, shaking the ground like a giant drum.

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Categories: Science · volcanoes,earth science,eruptions