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"The origin of the earth," geology schoolwork by Eve Drewelowe, March 1, 1922
Page 12
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-12- Astronomic 1 - The planets may have had rotation at the beginning but some of their motion is due to the collision of the planetisimals as they joined the nuclei when they were gathered in to form the planets. Therefore, there would be no fixed relationship between the rotation of a planet and the revolution of its satellites and the revolution would not have to be in the same general direction. 2- In a solar system developed in this way from a spiral nebula the outer parts of the arms should be composed of lighter material than the inner pat. The inner planets formed therefrom should therefore have higher specific gravity than the outer as is the case. 3 - The spiral nebula are disks and the solar system is a disk which explains its shape. 4- The solar system is not a perfect disk, there is no definite equator because in the disruption of a star the eruption of the material is not at one given point. 5 - the Planets revolve round the sun in one direction, the same general direction. 6- In rotating the material at the outside goes faster than that near the center of a body. The rotation, generally, of the bodies of the solar system is in the same direction. Satellites may obtain foreward or backward revolution depending on the position and speed which it holds. 7 - Outermost planets are larger than the innermost, generally speaking, but one would not expect a regular progression from large to small. Geologic 8 - Life existed while the rocks were formed. The earth began from 1/81 of its mature size and by growth acquired a hydrosphere and atmosphere. Then gradation commenced which explains the sedimentary rocks being mixed with the igneous rocks. Pressure liquified rocks and started vulcanism. Heat, pressure and water started metamorphism.
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-12- Astronomic 1 - The planets may have had rotation at the beginning but some of their motion is due to the collision of the planetisimals as they joined the nuclei when they were gathered in to form the planets. Therefore, there would be no fixed relationship between the rotation of a planet and the revolution of its satellites and the revolution would not have to be in the same general direction. 2- In a solar system developed in this way from a spiral nebula the outer parts of the arms should be composed of lighter material than the inner pat. The inner planets formed therefrom should therefore have higher specific gravity than the outer as is the case. 3 - The spiral nebula are disks and the solar system is a disk which explains its shape. 4- The solar system is not a perfect disk, there is no definite equator because in the disruption of a star the eruption of the material is not at one given point. 5 - the Planets revolve round the sun in one direction, the same general direction. 6- In rotating the material at the outside goes faster than that near the center of a body. The rotation, generally, of the bodies of the solar system is in the same direction. Satellites may obtain foreward or backward revolution depending on the position and speed which it holds. 7 - Outermost planets are larger than the innermost, generally speaking, but one would not expect a regular progression from large to small. Geologic 8 - Life existed while the rocks were formed. The earth began from 1/81 of its mature size and by growth acquired a hydrosphere and atmosphere. Then gradation commenced which explains the sedimentary rocks being mixed with the igneous rocks. Pressure liquified rocks and started vulcanism. Heat, pressure and water started metamorphism.
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