What is Sea-floor spreading? Seafloor spreading is a process of plate tectonics in which new oceanic crust is created as large lumps of the Earth ’s crust split apart from each other and magma shafts up to fill the gap. Who discovered sea-floor spreading? The man who discovered sea floor spreading was Harry Hess. Harry Hess was a geologist. Part of his mission had been to study the deepest parts of the ocean floor. In 1946 he had discovered that hundreds of flat-topped mountains‚ perhaps sunken
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has been slowly accumulating. The earth is made up of tectonic plates these are massive slabs of rock floating on magma ‚as the plates move about‚ they spread apart‚ collide‚ or slide past each other‚ This is the main cause of volcanoes and earthquakes Earthquakes occur in many regions all over the world in some regions they occur more frequently and severely than in others (depending on the location)‚ the main cause of earthquakes is tectonic plates grinding against each other ‚ therefore earthquakes occur
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which Japan had ever recorded and can only be explained by plate tectonics. As seen in figure 3‚ the earthquake occurred in a subducting zone where the Eurasian plate and the Pacific plate are converging. Figure 4 shows the continental Eurasian plate being subducting the oceanic Pacific plate and every year the pacific plate travels a distance of nine centimetres towards
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Purpose The principle of this experiment is to have a thorough perceptive of: • Culture washed and unwashed lettuce on agar plate. • Culture fresh and opened milk with the same expiration dates. • Explain the significance of food safety. • Illustrate foodborne sicknesses.
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samples of different concentration of protease. In this experiment‚ a plate of milk agar is needed for comparing the result of each sample. Circular wells were dug on the milk agar plates by the use of cork borer‚ and extracts could be put into the wells by dropper. One must note that milk-agar is white in color due to casein. If protease is present‚ casein will be digested by the enzyme giving a clear zone in the milk-agar plate. The size of the clear zone can help us to determine whether fruits differ
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2. 1.1 The particles that make up an atom3 Basic sub-atomic particles‚ each has different properties. Name | Symbol | Approximate relative mass | More accurate mass | Relative charge | Proton | p | 1 | 1.0000 | +1 | Neutron | n | 1 | 1.0016 | 0 | Electron | e | Almost zero | 0.000 547 | -1 | This is the culmination of the work of 5 eminent physicists‚ Dalton‚ Thomson‚ Rutherford‚ Bohr and Chadwick.Their work basically culminates in the ideas above and the important fact that an atom consists
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Petrology 2 Sedimentary Petrology Assigned to : • Amaro‚ Elfe C. • Balansag‚ Imee S. Research Paper Outline 1. Origin and Formation a. How did sediments and sedimentary rocks originate? b. What are the four (4) components or earth materials that make up or constitute sedimentary rocks? c. What are the major types of basins on which sediments accumulate and form sedimentary rocks? 2. Identification a. How do we describe sedimentary rock types?
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Japan is located in three tectonic plate boundaries; the Pacific‚ Eurasian and Philippine Sea plates. A three way destructive plate boundary occurred as a result of a plate movement along the border between the plates. The Kobe earthquake was caused by pressure building as the Philippine Sea plate is subducted underneath the Eurasian plate. The further compressed Philippine Sea plate was affected underneath‚ likely the less compressed continental Eurasian Plate causing an increase of pressure of
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crust that creates seismic waves. CAUSE OF EARTHQUAKE Earthquakes are caused by the movement of the earth’s tectonic plates. Earthquakes occur where the earth’s plates meet along plate boundaries (see plate tectonics page for more information on this).For example as two plates move towards each other‚ one can be pushed down under the other one into the mantle. If this plate gets stuck it causes a lot of pressure on surrounding rocks. When this pressure is released it produces shock waves. These
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to be where plate boundaries intersect with major storm belts and they are also in areas of high human concentration in low or medium developed countries because this effects whether or not the country will be prepared thoroughly enough and whether it can recover quickly. The Philippines lies on a boundary between the Philippine and Eurasian tectonic plates‚ whereby the Eurasian plate is sub ducted underneath the former; this is defined as a destructive plate boundary‚ as the plates move in series
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