What makes earthquakes happen so suddenly?

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So need help in my understanding here. My knowledge is earthquakes are caused by the tectonic plates rubbing together/pulling apart. And that the plates move very slowly.

If it is caused by slow and steady movement of the tectonic plates. What is it that is happening that causes all that energy to be released suddenly and causing an earthquake? Is it simply that part of the plate breaks causing alot of movement suddenly or is there something else in play?

Thanks

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Anonymous 0 Comments

Static (stationary) friction is stronger than kinetic (sliding) friction. In other words, once two objects start sliding past each other, the friction between them is less than before. Also, once motion has begun there is momentum which will tend to keep it going.

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