According to Javier Viruete‚ “island arcs develop because of subduction of oceanic lithosphere beneath another oceanic plate…aqueous fluids and/or hydrous melts released from the subducting slab and their reaction with the overlying mantel wedge provide the prime control on arc magma genesis.” Basically this explains the formation of the islands as being caused by tectonic plates colliding against each other and releasing molten rock masses from the
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flame to make the loop red‚ then left them to cool in the test tube tack for streaking. The media included a liquid (YED media that was made by 3g yeast extract‚ 6g anhydrous dextrose‚ 6g agar‚ and 300 mL tap water). The liquid media was on a hot plate‚ then an oven mitt was used to carefully transfer onto 4 petri dishes at a tilted angle‚ with the petri dish lids at an angle as well to reduce airborne contamination. After the end of each pour—no more than 2/3 of the petri dish’s capacity—the flask
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Volcanoes and Earthquakes test Bew c. 1. Where do earthquakes occur? Earthquakes occur at breaks in the earth’s crust called the fault lines. 2. What causes Earthquakes? Tectonic plates pushing‚ pulling‚ slipping past each other increasing the stress and causes elastic rebound to happen. During elastic rebound‚ energy is released and some travel as seismic waves‚ which cause an earthquake. 3. How do earthquake waves travel and what are the various types of waves? Body waves
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is associated with two of the plate boundary types: divergent and convergent margins‚ so activity is usually found along oceanic ridges where plates are moving apart‚ near rift valleys‚ on subduction zones where the most violent activity takes place and over hot spots which have given rise to the Hawaiian islands. Magma is generated at most plate boundaries‚ and this magma rises to the surface to form volcanoes. The mobility of crust also causes earthquakes. When plates collide or slide past each other
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the due date for full credit. (20 points) 1. The diagram below shows three plates (A‚ B‚ C). Plate B is denser than Plates A and C. A continent is shown on Plate C‚ along with seafloor. The other plates are entirely seafloor. The arrows show the directions that the plates are moving. Complete the table. First‚ note the geologic feature(s) that corresponds to each number on the map. Then explain in detail how the plate movements at each location account for the features at that location. Answer:
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solidify at room temperature. After an hour‚ the dishes were placed in a refrigerator at three degrees Celsius. If there was visible condensation on the agar plate‚ they were flipped to avoid the contact of heat that drove the moisture out of the agar dishes. The contents of the broth culture of E. coli was gently swirled
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active dried yeasts (ADY). This experiment allowed the students to perform the plate count technique by serial dilution and two common methods‚ spread plate and pour plate to determine the colony forming unit (CFU) of yeasts A ten-fold dilution is used in this experiment‚ the sample is diluted until it reached the 10-9 dilution. Plating for spread plate started from 10-5‚ 10-6‚ 10-7 and 10-8 dilution while for pour plate‚ it started from 10-6‚ 10-7‚ 10-8 and 10-9 dilution. Having incubated inverted
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Course Syllabus College of Natural Sciences GLG/150CA Version 1 Exploration of Earth Sciences Course Description This course focuses on the dynamic forces impacting Earth’s environment. It is a study of the major constructs in geology‚ oceanography‚ meteorology‚ and astronomy collectively called Earth science. A scientific approach will be used in orienting students to develop an understanding of the interconnectivity of each of these sciences. Policies Faculty and students/learners
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Aseptic Technique and Streak Plates Purpose The purpose of this exercise is to learn aseptic technique procedures and there importance and also to learn to isolate colonies using the streak plate technique. Introduction Bacteria are inoculated (introduced) and cultured (grown) in the laboratory for test studies to determine their morphology (the shape‚ size‚ arrangement‚ and internal structures) and pathology (ability to cause disease). Inoculation has to be performed without adding other microbes
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yeast and mold in a sample. It counts the number of colonies produced by a very dilute suspension of bacteria on an agar plate and to observe the differential staining behaviour of the living bacteria. This involves counting the colonies produced by viable cells under favourable growth conditions. Some techniques needed before the viable count‚ like pour plate method‚ spread plate method and most probable number method. The viable count is very specidic‚ as it represents the number of colony forming
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