He suggested that at the centre of oceans, molten material would rise from the Earth’s mantle, causing new sea floor to be created, pushing the ocean floor. He also suggested that there were ocean trenches where old sea floor would then go back into the mantle, and molten. He found that these ocean trenches, the deepest parts of the ocean, were very near continental plates. Hess theorized that the action of the sea floor spreading caused continents to move apart and so this being evidence for continental drift, showing why it happened. The evidence of sea floor spreading was further supported by Vine and Drummond, who studied the magnetic pattern of the sea floor.
Biology Excursion Question Using data collected on field trip and two named animals, explain the relationship between the distribution and abundance of these two organisms and the abiotic features of the rock platform. There is a close relationship between the abundance and the distribution of organisms living amongst the long reef platform. Abiotic features such as temperature range, salinity, Ph. levels, turbidity, water availability effect the distribution and abundance of aquatic sea creatures living in the area. Some of the organisms such as Tesseropora Roseas (Barnacles) and Knobbly Winks have different adaptations, which allow them to survive in these harsh conditions.
There is the main point of erosion which is corrasion, attrition, solution and hydraulic action. Corrasion is when waves carry debris (such as rocks, sand and pebbles). This is then hurled against the cliff face as the wave breaks on the cliff this will cause the cliff face to then crack and break off over a period of time. These fragments are then picked up by the wave and hurled against the cliff face; the process repeats itself with the new
I shall use examples of the Kobe Earthquake 1995, Boxing Day Tsunami 2004 and the Haiti Earthquake 2010. The earthquake of 2004 was caused by subduction of the Australian plate and the Eurasian Plate ,a 15-20m slip occurred along the fault line which then caused an earthquake measuring a 9.1 on the Richter scale. This a very high recording on the Richter scale so therefore it would always cause devastating hazards , but human factors could be seen as making the impacts far worse. The earthquake in the ocean had caused a tsunami to occur within the Indian Ocean. The wave reached up to 30 metres high causing devastation to the 13 countries surrounding the ocean.
Outline how the 4 spheres interact at Cronulla to create this coastal environment. Examine how people have impacted on these processes and evaluate the effectiveness of the management of the area. Cronulla is located 20km south of the Sydney CBD. It reaches from the Kurnell peninsula in the north to Port Hacking and the Royal National Park in the south. Cronulla consists of a built environment and a biophysical environment.
In Foredune and Second dune, the natuarl process plays an important role that shaping the fundamental coastline of Seaford, and the beach nourhishment influence the soil contents. In Kananook Creek and Wetland, the human impacts reform the original hydrologic patterns from large Carrum Carrum Swamp to a creek and wetland. Four observation points are interacting with each other and showing the distinction in terms of soils, hydrology and vegetation affected by natural processes and human impacts. There are two different types of clay content among these points (Figure 23) that is sandy loam in Foredune, Second Dune and Kananook Creek that is covered about 1020% of clay, and medium clay which contains more than 45% of clay in Seaford Wetland where is a wetland. (ASRIS, 2014) Due to the different types of soil content, there are different types of vegetation growing and hence different environments formed acting as distinct inhabit and patch for animals.
Bacton’s geology is comprised of clay, silts and sand. It has a wide sandy beach. It is at risk from coastal erosion such as longshore drift and if it was not protected, the gas terminal would cease to function which would make a lot of the population in Bacton redundant. Also, it poses an environmental hazard if an explosion occurred and gas escaped. Happisburgh is composed of several glacial tills
There is a convergent boundary on the west side of the United States. At a convergent boundary, two plates collide, and the denser plate is subducted. Volcanoes and earthquakes are common as a result of pressure and friction. There is also a transform boundary forming the San Andreas Fault which is between an oceanic plate subducting under a continental plate. 3.
Mt. St Hellens is positioned on a destructive plate boundary, this means that two different type of plate are moving towards each other, a denser ‘Oceanic Plate’ (Juan de Fuca Plate) is moving towards a lighter ‘Continental Plate’ (North American Plate). As the Oceanic Plate is heavier as it has a body of water on it, in this circumstance ‘Spirit Lake’ it is forced to subduct under the lighter Continental Plate. When this occurs the plates can stick, this causes a huge amount of friction, heat and pressure to build up. As Mt.
Tension [pic] d. Compression 6. What is Earth's core composed of? [pic] a. hydrogen and iron b. magnesium and silicon [pic] c. iron and nickel d. nickel and silicon 7. A large ocean wave that is generated by vertical motions of the seafloor during an earthquake is called a(n) __________. a. upwelling current b. seiche [pic] c. tsunami d. tidal range 8.