Examlex
A solution with a pH of 7 has 10 times as many H+ as a pH of 6.
Sedimentary
Pertaining to rocks formed by the accumulation or deposition of mineral or organic particles at the Earth's surface, followed by compaction.
Sandstone
A sedimentary rock composed mainly of sand-sized minerals or rock grains.
Shale
A fine-grained sedimentary rock that can contain significant amounts of oil and natural gas.
Magnitude 9.0
A measure on the Richter scale indicating an extremely powerful earthquake, capable of causing widespread destruction and significant alteration of the Earth's surface.
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