Why Do Volcanoes Sleep and Then Suddenly Wake Up?

Imagine a volcano is like a person who's been taking long naps for years, they're not always awake. When they finally wake up, it's because something inside them has been building up pressure. It could be new stuff coming from deep underground or shaking that makes everything stir. Then poof, lava comes out, and the volcano is wide awake again.

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Examples

  1. A sleeping volcano is like a person taking a long nap, it just wakes up when something stirs it, like an earthquake or new lava coming from deep underground.
  2. Volcanoes can go hundreds of years without erupting, and then suddenly explode because the lava inside them was building pressure for so long.
  3. Imagine a volcano that's been quiet for centuries; one day, it starts rumbling, then boom, lava comes out like it just woke up from a really deep sleep.

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