Science

In Chapter 2 you learned about the old geocentric model of the universe and the development of the heliocentric model. For this assignment I would like you to answer the following questions.1. Write a paragraph describing the geocentric model of the solar system–include information about what evidence there is for it and what evidence there against it (i.e. the evidence that supports the heliocentric model).2. Write a paragraph describing the various contributions to the heliocentric model of the solar system by these astronomers: Nicolas Copernicus, Tycho Brahe, and Galileo Galilei. Each one had several contributions so be as detailed as possible.3. Write a paragraph describing Johannes Kepler’s contributions to the heliocentric model of the solar system–describe each of his three laws of planetary motion. For the 2nd & 3rd law provide some elaboration (for the 2nd law what is its implication for planetary motion and give an example of how is third law works with 1-2 planets in the solar system)4. Write a paragraph-Explain how Isaac Newton uses his laws of motion and the law of gravity to explain how planets orbit the sun in the heliocentric model (basically explain how a planet’s orbit works using these laws). I don’t necessarily want a repeat of what each law is, rather an explanation of how/why planets orbit the Sun using his laws of motion & law of gravity.Each answer should be about a paragraph in length. Make sure to answer the questions in your own words–I’m not looking for a word for word explanation from the book or the bullet points at the end of the chapter.

What is a mineral?What criteria must be met for a substance to be considered a mineral?Describe the following properties:Luster and colorCrystal formChemical formulaCleavageFractureHardnessSpecific gravity

Readthe Article “Thinking Like a Geologist” and answer the following questions:1. Give two reasons why the people interviewed decided to follow careers in the geosciences.2. On the basis of the information in the articles and your own thoughts, identify three other reasons why a person might choose a career in the geosciences.3. On the basis of the information in the articles and your own thoughts, identify two reasons why a person might not choose a career in the geosciences

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After watching the great video The Cosmic Voyage, 1)  tell us about four (4) new concepts or facts that you find the most interesting and 2) what did the video show you about the concept of time and space? All initial posts MUST have at least 250 words A Cosmic Voyage w/ Morgan Freeman https://www.youtube.com/watch?v=tQGz76_1feY&feature=youtu.be

Explain the increase in liquid hydrostatic pressure

Review the scientific method found on page 15 of your text. Research a reliable resource on this topic. Identify each step of the scientific method as it relates to the following:Make an observation that is testable.What was the observation in the study?HypothesisWhat was the hypothesis?TestWhat were the details of the test conducted?Gather dataHow did the researchers gather the data to test their hypothesis?Interpret resultsWhat were the final results of the study?How did the researchers use the scientific method to come to the conclusions of the study?

Your initial post in the discussion this week consists of two parts. First, choose a molecule used in healthcare, industry, or found in a natural source and discuss the importance of this molecule. Be sure to include at least one outside source and make sure to follow APA citation guidelines.The electron configuration of an atom determines the number of electrons available to participate in bonding with another atom. One method of depicting the valence electrons that an atom has is through the Lewis structure. For the second part of your initial post, pick an element from the periodic table of elements. Identify the valence electrons and the orbitals in which they reside.

masters level dissertation in chemistry10,000 wordsvery complicated taskrequiring calculationsAqueous two-phase systems based on ethyl lactate is an innovative technique to separate biomolecules that combines the advantages of liquid-liquid extraction and hydrophilic biorenewable solvent. Due to the complexity of these systems, rigorous models based ontheory are not available. Therefore, the empirical equation given by Merchuk is usually used todescribe binodal curves. However, Merchuk’s equations provide a poor extrapolation ability.Therefore, the aim of this work is the analysis of other equations, comparing the modelsreported in the literature and proposing alternative equations to improve accuracy or to reducethe mathematical complexity. The research objectives of this project are:i) To compile a database containing experimental data of solubility of nine aqueousbiphasic systems based on ethyl lactate;ii) To select statistical criteria to be used for the selection of models;iii) To fit various empirical models to experimental data;iv) To analyse and compare the effectiveness of empirical models, allowing discussion ofthe advantages and disadvantages of each equation.MS Excel will be used as calculation tools.

Soil Analysis Lab ReportPlease follow the template exactly… and read through the entire thing.Please for the directors exactly… and read those as well.Should you have any questions, please let me know ASAP.DIRECTIONS: 3.2 LAB (Soil Analysis) Directions and SupportUse this document to help you focus your research, and organize your thoughts on the required components.Part 1: Researching pertinent background information and citing sourcesClick here to read about the activity and purpose of this lab investigation.You may want to start a Google Doc where you can keep track of your thoughts, notes, sources, etc.Research peer reviewed studies that have been conducted on soil. Once you enter “soil” in the search engine, you will see more specific categories to search if “soil” is too broad for youMake sure to use Google Scholar as your search engine so that it filters through peer-reviewed sources.Watch this video to get an idea of how to use Google Scholar.Select and summarize one or more of the studies.Make sure to maintain your citations (watch the video in 3b if you aren’t sure how to do this).Research peer reviewed studies that have been conducted on ONE of the soil characteristics that we will analyze in this experiment. You may choose from the following:Soil structureSoil pHSoil potassiumSoil phosphorusSoil nitrogenSelect and summarize one or more studies on the soil test you selected in step #4.Part 2: Developing your hypothesisWe calculated the relative density and relative frequency of five prairie plants in our first lab. Your hypothesis for this lab should be a possible explanation for that data (see figures 1 and 2 below) based on the soil tests we are conducting.Based on your research from part 1, #3 and #4 above, develop a hypothesis for the different relative density and frequency patterns between the two reconstructed prairies.Note: A hypothesis is a testable prediction, but we haven’t tested this yet, so you cannot be wrong!Feel free to use this format for your hypothesis if you aren’t sure how to write one.(insert on observation about the different density or frequency patterns between the two prairies) could be explained by (insert soil test), because . . .You could strengthen your hypothesis by including peer-reviewed studies on the soil requirements of one of the prairie plants.Part 3: Writing the introductionSummarize the purpose of investigating soil characteristics. (See Part 1, #1)Summary of current research/literature related to the topic. You should have at least TWO (2) outside sources cited. One should be about soil. The other should be about one of the tests that we are conducting in this lab.Use Google ScholarMust be from peer-reviewed journalsInclude internal citations following MLA formatHypothesis for the study you are conducting (not the ones you cited)Your hypothesis should be written in this format: (insert on observation about the different density or frequency patterns between the two prairies) could be explained by (insert soil test), because . . .Part 4: Finishing up the report.Click here to open up the template you are to use to finish the report, and finish writing all sections.Click here to view the rubric that will be used to score your report.Make sure to look at the feedback you received on your last report so that you know what you did well, and what you need to improve on in this lab report.This report is the reassessment of the last lab report, and therefore your grades on this report will replace the grades on the last lab report.