Tensile+Strength+of+Materials+Lab

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Paper or Plastic? You are a member of a research and development group (R&D) that is doing research in an effort to convince the local stores to convert to a better type of packaging material from the Shikellamy Supply Closet. Each team will be given a specific packaging material to test for stress and strain as part of the project. You must also research what your material is, how much it costs, analyze its recyclability, and prepare a report to be presented to the local Business of Commerce on your experiment and results. Your job is to convince them to use your product. 1.   Do online research to see what other people have found about your material. a.   Strength b.   Cost c.   Recyclable d.   Uses 2.    Create a team hypothesis. 3.   Develop an experiment to determine your product’s stress/strain. a.   Need to use a caliper? b.   What will you use to measure force? 4.   Create a Google.Project presentation to show your online research, hypothesis, experiment, data, results, conclusion and most important – recommendation with supporting reasons. Rubric:
 * Steps: **
 * ** Project Presentation ** || ** Possible Points ** || ** Group Points ** ||
 * Online Research – Slide shows information from 3 sites different || 10 || ||
 * Hypothesis - Your hypothesis should be something that you can actually test, what's called a **testable** hypothesis. In other words, you need to be able to measure both "what you do" and "what will happen." || 10 || ||
 * Experiment - 1) singularity - it tests only one variable in the situation (2) reproducibility - it can be re-done by other scientists to verify the results (3) utility - the answer matters to human life in some way || 10 || ||
 * Data – Make a graph of your data || 10 || ||
 * Results - || 10 || ||
 * Conclusions || 10 || ||
 * Recommendation || 20 || ||
 * Individual Group Grade || 50 || ||

Hypothesis
After having thoroughly researched your question, you should have some educated guess about how things work. This educated guess about the answer to your question is called the hypothesis. The hypothesis must be worded so that it can be tested in your experiment. Do this by expressing the hypothesis using your independent variable (the variable you change during your experiment) and your dependent variable (the variable you observe-changes in the dependent variable depend on changes in the independent variable). In fact, many hypotheses are stated exactly like this: "If a particular independent variable is changed, then there is also a change in a certain dependent variable." While most would agree with the first two elements of a "good experiment" listed above, I'm not sure you would find much consensus on the concept of "utility." Whether the result of an experiment is ultimately deemed "useful" to human life has little bearing on the methodology and scientific rigor with which an experiment is conducted. On the other hand, some would say that scientific integrity ("honesty") is a necessary ingredient in any good experiment, while others would say that a good experiment must either prove or disprove a hypothesis...which is, after all, the whole point of conducting the experiment in the first place. Experimental data may be qualitative or quantitative, each being appropriate for different investigations. Generally speaking, **qualitative data** is considered descriptive or observational and, therefore, is relatively //subjective// in nature. Whereas **quantitative data** is gathered in a manner that is normally //experimentally repeatable//, qualitative information is usually more closely related to phenomenal meanings and is, therefore, subject to interpretation by individual observers. In science, valuable experimental [|data] is that which can be reproduced by a variety of different investigators and lends itself to mathematical analysis.
 * Experimen t – **
 * Data **