Earth Science

Glacial_landforms.docx.docx-Glacial Landforms 1. What is a

ESC1000 Beaches and Coastal Erosion PART 1: Northeast Florida Beaches Virtual Field Trip by Joann Mossa The questions below are based upon the virtual field to three northeast Florida beaches, linked here: https://fcit.usf.edu/florida/teacher/science/mod2/resources/coastal.pdf Use the PowerPoint your textbook to answer the questions. 1. What are the two principle materials found on these beaches? List the principle mineral(s), the grain size, and the source of the sediment. The two principal minerals found on these beaches are quartz and another darker mineral that is denser than quartz. The minerals have a grain size of 1/16 mm and 2 mm. The source of sediment is sand. 2. Describe the beaches of Northeastern Florida. Include the width and slope of the beaches in your description. The beaches in Northeastern Florida have several sand dunes to which many forms of vegetation are created to reduce coastal erosion. In my opinion, the width of the Northeastern Florida are long and narrow and the slope of the beach and its sand dunes are dependent on the wind patterns, tides, and the movement of sand. 3. Describe the dunes in Northeastern Florida. What are the natural means of stabilizing dunes? How does this work? 4. What agents and processes move the dunes? 5. Did you see any evidence of dune erosion? What caused the erosion? 6. These beaches are on barrier islands. Compare the beaches on the ocean side of the islands with the beaches on the lagoon (river) side of the islands. How are they similar and how do they differ in width, slope, composition of the sediments, and grain size of the sediments? 7. What are the agents and processes that move sand on the beaches? 8. How are the beaches and the dunes related? 9. How have people tried to slow down beach erosion in this area? 10. Is this an active or passive margin? Give some reasons to support your answer. PART 2: Coastal Erosion 1. How structural and nonstructural methods used to try to slow coastal erosion?   2. Describe the different methods, their effects, and effectiveness.

Webber International | 1000 | Earth Science | homework | ESC1000 Beaches and Coastal Er

Assignment_8.docx.docx-Assignment 8 1) What is primary

Tour to Iceland View the video tour of Iceland here: https://www.youtube.com/watch?v=4_UuL8YLKig Then, answer these questions: 1. What is the geologic setting of Iceland (look in your text)? The geologic setting of Iceland is tectonic, it is centrally located on the divergent boundary where North American Plates and Eurasian Plates slide apart. Iceland is found above a volcanic hot spot called the Iceland Plume. The distinctive amount of volcanic activity found in Iceland is allegedly from a combination of Mid-Atlantic Ridge motion and Iceland hotspot plume motion. 2. Describe the valley you see in the video. What type of valley is this? The valley I saw in the video was a low surface valley amongst numerous mountains and hills. The type of valley shown in the video is a rift valley. 3. There are vertical cracks in this valley. How did they form and how are they indicative of a divergent boundary? The vertical cracks in this valley are formed from magma eruptions on the lowland as divergent plate boundaries push away from each other. The more forceful the erosions are can cause more of a severity in the vertical cracks amongst the rift valley. 4. Many of the mountains you see in the valley are volcanoes. Based upon what you know about divergent boundaries, what kind of volcanoes are these? Based on what I know about divergent boundaries, the type of volcanos are mid ocean ridges. Mid ocean ridge is centrally located in between two tectonic plates. As long as volcanism continues than the Mid Ocean ridge will remain active. 5. The beach sand is black. Do you think this is related to the type of lava coming from the volcanoes? Explain your answer. I do think the sand being black is relative to the type of lava coming from the volcanoes. The sand is mixed with miniscule remains of basalt lava which causes the sand to have such a deep coloring to it. 6-What is a lava field? How do lava tubes form? In flat areas lava fields can form when lava spreads leveled for an extended distance. Lava tubes form as lava thickens and produces a crust above a stream of lava. 7-There are many hot springs in Iceland. How do they form and how are they caused by the tectonic setting? Hot springs in Iceland are due to the amount of volcanic activity under Earth’s surface. With the location of Iceland being on the Mid Atlantic Ridge, there is consistent volcanic activity from contact between tectonic plates. 8-At the end of the video, you see a power plant. What type of energy is used by this power plant? How is this related to the tectonic setting? The power plant in the video uses geothermal energy. Geothermal energy is related to tectonic setting because it is energy that is stored in Earth’s surface. Most geothermal resources originate on tectonic plate boundaries where volcanos are shaped.

Webber International | 1000 | Earth Science | homework | Tour to Iceland View the video

Assignment 9 Part 1 1) If a single female houseﬂy can lay 120 eggs and 50% of the eggs will become female adults, how many houseﬂies will it be aﬅer 7 generaons? a. 1 st generaon: 1 female = 120 eggs b. 2 nd generaon: 60 females * 120 = 7,200 eggs i. 7,200/2 = 3,600 females c. 3 rd generaon: 3,600 * 120 = 432,000 eggs i. 432,000/2 = 216,000 females d. 4 th generaon: 216,000 * 120 = 25,920,000 eggs i. 25,920,000/2 = 12,960,000 females e. 5 th generaon: 12,960,000 * 120 = 1,555,200,000 eggs i. 1,555,200,000/2 = 777,600,000 females f. 6 th generaon: 777,600,000 * 120 = 93,312,000,000 eggs i. 93,312,000,000/2 = 46,656,000,000 females g. 7 th generaon: 46,656,000,000 * 120 = 5,598,720,000,000 eggs i. 5,598,720,000,000/2 = 2,799,360,000,000 females 2) What are the ﬁve major soil components? a. The ﬁve major soil components are minerals, water, air, decomposed animals, and the living organisms that are found underground. 3) What are the two primary causes of soil erosion? What are the approaches to minimize soil erosion problems? a. The two primary causes of soil erosion are grazing animals and agriculture. The main approach that is working on minimizing soil erosion is the conservaon llage method is no-ll planng to make sure that the crop residue protects the soil. 4) How long will it take to double the populaon in the following countries based on the given populaon growth rate? a. Uganda: 3.2% - 21.875% b. India: 1.7% - 41.176% c. United Stated: 0.7% - 100% d. Germany: 0.4% - 175% e. Japan: -0.2% - -350% 5) What are the two types of human acvies relang to human populaon that have signiﬁcantly altered the environment? a. Two ways that human populaon alters the environment are crops and livestock and urban centers and transportaon corridors. Crops and livestock alter the environment because when farmers are planng they are digging up the soil to use it to grow crops and the livestock alters the environment because they eat the crops that are planted, thus tearing up the soil even more. Urban centers and transportaon alter the environment because in order to build those urban centers, you have to clear the land. Part 2 1) Review Goal 1: Cizen Involvement a. In Oregon, cizens have to be involved in every process of planning process, making it the number one goal in the statewide land use planning system. Some of the involvement programs are: opportunies for widespread public involvement, eﬀecve two-way communicaon with the public and the ability for the public to be involved in all phases of the planning process. The rest of the requirements to be involved are: making technical informaon easy to understand, feedback mechanisms for policy-makers to respond to public input and adequate ﬁnancial support for public involvement eﬀorts. By following these requirements, the environment is improving because the people of Oregon are commied to making sure their environment can be useful instead of being trashed. 2) Goal 2: Land Use Planning a. The second goal requires every local government in Oregon to follow a comprehensive land use plan. The city and county plans have to be consistent with one another and they must be coordinated with the district state agency plans as well. Besides the federal and tribal lands, all of Oregon is planned and zoned, and each zone has guiding documents that are used to help make land decisions. The second part of goal two is the fact that there is an excepon to the land use goals, and then it will go state wide to have a beer decision made. 3) Goal 3: Agricultural Lands a. Agriculture is what originally brought people to sele to Oregon, so now it has a big inﬂuence throughout the state. This third goal is used to protect the farmland

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