Earthquakes Subduction Zones Lab Report Essay Example

Earthquakes Subduction Zones Lab Report Essay Example Earthquakes Subduction Zones Lab Report Paper Earthquakes Subduction Zones Lab Report Paper 500 km x 100,000 CM = CM CM / 3 CM/year = years 2. Question: What is the depth of the deepest earthquake in the Tongs data set? Estimate the rate of descent of the East Pacific Rise material at the Tongs Trench in centimeters per year. Answer: The depth of the deepest earthquake in the Tongs data set is 675 km. The rate of descent of the East Pacific Rise material at the Tongs Trench in centimeters per year is 0. 312 CM/year. Work: 675 km x 100,000 CM = R = CM / years R 0. 312 career 3. Question: Estimate the rate of descent of East Pacific Rise material into the Peru- Chile Trench in centimeters per year. Answer: IOW = 45 x 100 km = 4,500 km 4,500 km x 1 O,OHO CM = 45,000,000 CM 450,000,000 km / 3 CM/year = 150,000,000 years 540 km x 100,000 CM = CM R = 1 years R = 0. 6 CM/year Interpret and Explain Data The data represents the focus depths and longitudes (owe) of the earthquakes that occur at the Peru-Chile Trench subsection zone, and the Tongs Trench subsection zone. On the Tongs Trench as longitude (0 W) increases, or moves further from the prime meridian, the focus depth also increases, or becomes deeper . This creates a steeper slope, and the line appears to be moving upwards. On the Peru-Chile Trench as longitude (owe) increases, or moves rather from the prime meridian, decreases, or becomes shallower. This creates a smoother slope that appears to be moving downwards. On the Tongs Trench graph, the best-fit line is an estimate of the location of the boundary between the Pacific Plate and the Indian-Australian Plate. The Pacific Plate is subjecting, or moving under the Indian-Australian Plate as this plate overrides the Pacific Plate. On the Peru-Chile Trench graph, the best-fit line is an estimate of the location of the boundary between the NCAA Plate and the South American Plate. The NCAA Plate is subjecting, or moving under the South American Plate as this plate overrides the NCAA Plate. The Peru-Chile Trench and Tongs Trench have similar earthquake focus depths (km), but the longitude (owe) of these earthquakes is different. Summary of Data As two tectonic plates converge, if one or both of the plates is an oceanic lithosphere, a subsection zone will form. The Tongs Trench has a steeper profile than the Peru-Chile Trench. This is because older crust is cooler and denser than younger crust therefore it subjects at a steeper angle. The Tongs Trench has the steeper and older material. As observed from the charts, the Tongs Trench has a steeper profile than the Peru-Chile Trench. This means that the crust at the Tongs Trench is older and denser than the crust at the Peru-Chile Trench, therefore it subjects faster and at a steeper angle. The density of the rock that makes up the subjecting plate determines they way in that a plate behaves. A plate with a greater density subjects into the mantle faster and at a steeper angle than a plate with a lower density. The age of the crust involved in the subsection also affects the rate at which it subjects. Older crust is cooler and denser therefore it subjects at a steeper angle and faster than new crust at a subsection zone. Conclusion: Check Your Hypothesis: My data supports my hypothesis. I predicted that the East Pacific Rise material at the two convergent boundaries: the Tongs Trench and the Peru-Chile Trench is older than the crust created at the East Pacific Rise but the Tongs Trench material is older than the Peru-Chile Trench. This is true because the Tongs Trench and Peru-Chile Trench will have older material, as they are further away from where the crust is created. In addition, it is true that Tongs Trench has older material than the Peru-Chile Trench because it has a steeper slope, which means it is older and denser. Errors and Fixes: In this lab report, I researched more on my background information to enhance my understanding of the topic. In addition, I explained and analyzed my data to make it easier to understand the trends and what the data actually means. I also provided instructions on using a table of data, setting up, and preparing a graph, and preparing a lab report. The errors I had in my lab report were with the math work on the first three analyze questions, the direction in which the plates subjected, and my hypothesis did not clearly state an answer to my question.