An earthquake is caused by a sudden slip on a fault. ... When the stress on the edge overcomes the friction, there is an earthquake that releases energy in waves that travel through the earth's crust and cause the shaking that we feel. In California there are two plates - the Pacific Plate and the North American Plate.
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D.) The nuclear model describes the atom as a dense, positive nucleus surrounded by a cloud of negative electrons.
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I think it mite be 9 maybe Ok
