The evidence of sea floor spreading was further supported by Vine and Drummond, who studied the magnetic pattern of the sea floor. They found that the Earth’s magnetic field changes over time, because as magma from the mantle rises to the crust it cools but the basalt will align to the field it cools to. It is also found that on either side of mid oceanic ridges there were symmetrical magnetic patterns, so suggesting that the ocean was created at the mid oceanic ridges and as new ocean floor cooled, it pushed the crust away. Both Hess and Vine and Drummond found evidence that is crucial to the explanation of how continental drift happened, and it is very important in the development of geologists understanding, however other people found evidence to support continental drift also. Dan McKenzie went on to further explain sea floor spreading, being able to explain why new crust was made at mid oceanic ridges.
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.
When water freezes, latent heat is also released, warming the air in contact with the forming ice. Latent heat plays an important role in the redistribution of heat on the surface of Earth, especially through evaporation in the tropics and subtropics and the subsequent precipitation in higher latitudes. Secondly the warm waters sets up a low-pressure region around Iceland, reaching over the Norwegian Sea. The Icelandic Low acts as an enormous whirlpool sucking in warm air from the subtropical regions on top of the Gulf Stream and sending much of the heat to Norwegian shores. The transport of heat by the warm ocean
5. Why is the pattern of alternating reversals of the Earth's magnetic field as recorded in the sea floor rocks such an important piece of evidence for advancing plate tectonics? -It changes the direction of where some materials move so it might help plate tectonics move one way or the other. 6. Describe sea floor spreading and explain why it is an important piece of evidence for advancing plate tectonics.
Describe and explain the formation of channel features that can be created by the process of river rejuvenation (15 marks) The long profile of a river is not a static entity and is prone to change due to changes in sea level. Over very long periods of time large changes in sea level can drastically alter the rivers potential energy and can increase the chances of vertical erosion. Sea levels change because of two principal causes - isostatic changes and eustatic changes, both of these changes can lead to rises or falls in sea level. Isostatic changes are local changes where the height of the land changes relative to the global sea level. An example of this can be found in glaciation.
The uplift was surrounded by an epicontinental sea where sediment accumulated in marine margins creating sandstones, siltstones and limestones throughout the Basin. Facies 1 in the carbonate unit consists of 4-34 cm beds of black micrite, matrix supported with less than 5-10% grains making it a mudstone; crystalized shell fragments are present, 2-4 mm bivalve bioclasts and sparse 3-5 cm rugose coral and crinoid fragments; horizontal inclined burrows are
(C) The organisms act as the foundation of the restricted food chain in a manner that is comparable to the role of the phytoplankton. (D) The ability of the ocean depths to support biological life is the result of the interaction between the phytoplankton and the organisms. With improvements in the design and function of unmanned submersible technology, scientists have marine vastly expanded their One of capacity the to accumulate data regarding the less-accessible environments. most significant discoveries relates to the role played by underground vents, fissures in the crust of the ocean floor that expel
Marine erosion is a process which has a massive effect on the coastline. With marine erosion it mainly shapes the cliffs that meet the ocean. This process occurs more dominantly with more resistant rock types. It will reshape and transform the coastline from what it used to look like. There is the main point of erosion which is corrasion, attrition, solution and hydraulic action.
It is a common substance found in rocks in all parts of the world, and is the main component of shells of marine organisms, snails, coal balls, pearls, and eggshells. When these two reactants are combined results in the production of Calcium Chloride (CaC2), Carbon Dioxide (Co2) and Water (H2O). Aim: To investigate the rate of reaction between Calcium Carbonate (CaCo3) and hydrochloric acid (HCl) by changing the molarity of the acid and measuring how much Carbon Dioxide (Co2) is produced. Hypothesis: I predict that the higher the molar concentration of the acid the faster the reaction will take place therefor creating more gas in a shorter amount of time. I think this will happen because when the acidity is higher the solution is stronger which then speeds up the reaction process.
Coastal erosion is a natural process that can be impacted upon by human activities. The management of coastal sediments is a very current issue because action needs to be taken to lessen the impact of human activities disrupting coastal processes. The beach erosion-accretion cycle is a natural process of offshore/onshore sand exchange. Accretion is the accumulation of sediments such as sand from the natural action of waves, currents and wind. Erosion is the wearing away of the land, usually by the action of natural forces such as the transfer of energy with the large waves during storms.