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7 earthquakes, one earthquake about every 20 years
In roughly 10 million years, the world will be much better with futuristic cities.
it will disappear
The Law of Cross-Cutting Relationships would be used here. If a fault cuts across a rock unit, it is younger than that rock unit. If a fault cuts across a series of rocks, but suddenly stops at a rock unit, then that rock unit which the fault stops at is younger than the fault. So let's say the order of rocks (from top to bottom), is A B C D. If the fault cuts across B C and D, but not A, then the age of the fault is sometime between A and B. If you know the absolute ages of A and B (let's say, rock A is 100 million years old and rock B is 200 million years old), then the age of the faulting is between 100 and 200 million years ago.
yes
About 30 million years ago when the pacific plate first hit the north American plate
If you heard it will "fall into the sea", don't worry it won't. What will happen is the movement of the San Andreas fault will carry the land that Los Angeles is on northward until in a few million years it will be immediately west of the land that San Francisco is on. This movement north will continue past that too.
The San Andreas Fault marks the boundary between the Pacific and North American plates and would reflect the various lithospheric depths at points along it. Lithospheric depths are on average around 100 KM.
Around 30 years is what scientists predict
every million years every million years
7 earthquakes, one earthquake about every 20 years
In 100 million years, Saturn's rings will completely disappear.
No the time-scales for that sort of displacement along the San Andreas fault are on the order of millions of years not decades.
In roughly 10 million years, the world will be much better with futuristic cities.
you will not get lad
250 million years ago
San Francisco and Los Angeles are not on opposite sides of the San Andreas Fault, and the fault runs right through both those cities.