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Inner earth mysteries (1) (5873 words) |
 | The oceanic crust is commonly divided into three main layers: layer 1 consists of ocean-floor sediments and averages 0.5 km in thickness; layer 2 consists largely of basalt and is 1.0 to 2.5 km thick; and layer 3 is assumed to consist of gabbro and is about 5 km thick. |
| Scientists' conviction that density increases with depth is based on their belief that, due to the accumulating weight of the overlying rock, pressure must increase all the way to the earth's centre where it is believed to reach 3.5 million atmospheres (on the earth's surface the pressure is one atmosphere). |
| To explain the offset between the earth's geomagnetic axis and the spin axis, some scientists maintain that the earth's overall field may be a combination of a central, dynamo-created dipole field, aligned with the rotation axis, and several variable dipole fields located in the outermost portions of the core. |
| Hot 100 No. 1 Hits of 1961 (USA) - Wikipedia, the free encyclopedia (85 words) |
| (Redirected from Hot 100 No. 1 Hits of 1961) |
| These are the Billboard Hot 100 #1 Hits of 1961: |
| Category: No 1 hits in the United States |
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