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- murphykieran
The earth's gravitational field isn't caused by either it's rotation or it's orbit, it's dependent on it's mass and your distance from the centre. However, the rotation of the earth causes a centripetal force that counteracts gravity, but it's a much smaller force. The centripetal force is most noticeable at the equator where the rotation is fastest and it's weakest neare the where there's much slower rotation. This is why the earth slightly bulges at the equator where the centripetal force is pushing outward.PublicSecrecyThat's pretty crazy that it could affect the earths rotation, but I'm sure iktm would only be rotation, and not orbit.
However, considering that bigger earthquakes have happened this century and the earth is billions of years old, you can be sure that much bigger earthquakes have happened in mankind's history. And we're still here.
If you want an idea of the kind of volcanic and earthquake disasters waiting to happen at some point in the future, then read these:
Yellowstone Caldera
A full-scale eruption of the Yellowstone supervolcano could result in millions of deaths locally and catastrophic climactic effects globally.
Cumbre Vieja Volcanic Ridge
the resulting megatsunami would reach heights of 100 metres and the speed of a jetliner, reaching the African coast in three hours, the coast of England in five, and the eastern seaboard of North America in twelve. This could destroy cities along the United States' east coast, such as New York, Boston, Washington, DC, Norfolk, Virginia, and Miami, and penetrate as far as 25 km inland, devastating whole regions.
KM.