How often do volcanoes and earthquakes happen?

Answer 1

Earthquakes happen all the time. There are probably several happening right now at different places around the world. But they're all small ones, and are mostly not noticed. We only know about most of them because we have electronic instruments that can detect them. Some slightly larger ones happen less often, and are noticed, though they don't do any damage. Even less often is a large one that does some noticible shaking and some minor damage. The really big ones are least frequent. Fortunately.

The crust of the earth is made up of gigantic tectonic plates, and they are always in motion against, along or away from each other. The gradual movement of these plates releases energy, and we see these releases of energy as earthquakes. Along the plate boundaries we see what are called fault lines, and the quakes usually center on or around them.

As regards when the next "big" quake will come, we don't know. But it is coming. Big quakes have punctuated all of recorded history, and will continue to do so. We live on a living planet. Even the earth itself is alive. It can move - and it does.

Answer 2

Descriptor Magnitude Average Annually Great 8 and higher 1 Major 7 - 7.9 18 Strong 6 - 6.9 120 Moderate 5 - 5.9 800 Light 4 - 4.9 6,200 (estimated) Minor 3 - 3.9 49,000 (estimated) Very Minor 2 - 3.0 about 1,000 per day Very Minor 1 - 2 about 8,000 per day

Answer 3

Very often, usually there is one in Alaska every few minutes, or that is what i found on a website, ( thats earthquakes) if your talking about really major things like 8's on earthquakes not so often. Volcanoes errupt alot, like mount Etna in Italy, its errupting ALL the time, but mount st Helens only errupts after a long period of time, (It will errupt huge again some time)

Answer 4

About 1 in a second. But that's just small earthquakes there are alot bigger but they don't coma as often.