Chelsea+H.+Page

=__Chelsea H's Physics Page__= include component="comments" page="Chelsea H. Page" limit="10"

__Reflections__
7. Hypotheses, theories, and predictions are all interrelated. Hypotheses are used to sum up the facts observed and make an educated guess about how a certain experiment will progress. A theory is a compilation of many hypotheses and laws in order to govern an aspect of how the world works. Both hypotheses and theories are based on observations and patterns found in data within an experiment. A prediction is a sort of assumption based on what a hypotheses or theory says should happen. The outcome of a prediction based off a theory or hypothesis can either help prove or disprove said theory or hypothesis. 8. The difference between an observation and an experiment is that an observation is simply watching the world around you and noting down what is seen or observed, and an experiment is a planned test of a particular thing in order to see the outcome. 9. The reason scientific cycle would be an acceptable substitute for scientific method is that the steps in the scientific method continuously repeat themselves in order to prove a theory or law and to further the knowledge on the topic at hand. ||
 * ==Reflection on Wiki Page; 8/28/09== ||
 * We use blogger in German class, it's very easy and fun to use, Wikispaces seems like it will be fun and easy to use as well. Outside of school I have almost unlimited access to the internet, depending on when the rest of my family is using the computer. I think the most valuable aspect of Wikispaces will be that I'll be able to view the calender of tests and scheduled events in class in case I forget something. Also being able to have all the links compiled in one spot will make life really easy, as well as being able to put lab reports on here. ||
 * **Scientific Method Reading; 8/28/09** ||
 * This author views the scientific method as a way of looking around our surroundings and noticing patterns. An example of this is that when you drop an object, it will fall. They also believe that at the step of finding patterns in what is observed, that a scientist will summarize the data in a mathematical type of way, whether it be in a graph form or some other mathematical way. This author believes that when using the scientific method, it is directly related to mathematics, and mathematics is a very large factor in solving a problem or question using the scientific method. The author of this article is very interested in observing the natural world to prove hypotheses. When it comes to testing things, they believe in only using the solids or liquids naturally found on the earth's surface. In this author's view of the scientific method there are four steps; observation, hypothesis, prediction, and testing. He/she believes that it's a never ending circle, each step continuously leading into the next. They believe that most experiments are begun with a certain purpose of what the outcome should be. The author believes that there is no "final answer" in science, and that no matter what data can be confirmed by an experiment or observation, it is not truly the answer and the cycle must continue on, back at the beginning over and over forever. ||
 * **==**Reflection Review Questions; 8/31/09**==** ||
 * 6. The steps of the scientific method are collect data, identify patterns and regularities in the data, form a hypothesis, and make predictions. The step of collecting data is basically looking around and observing everything occurring in nature/your experiment. The identifying patterns and regularities step is looking at the data you have collected using quantitative measurements (measurements made in a standard measurement) to find repetitiveness and similarities within the data itself and between other data from other trials performed to answer the same question. Forming a hypothesis is simply making an educated guess based on the facts and patterns you gathered in your observations. Making predictions is using the hypotheses to predict how a certain experiment will turn out, then performing the experiment to see if the outcome correlates with the hypotheses that was used to make the prediction.


 * **Reflection; Harmonic Motion** **Lab 9/14/09** ||
 * Designing and testing the clocks was similar to the scientific method in the way that we were making predictions about what we believed would make the clock successful, and also we were testing different variables in order to make different observations and collect a wide variety of data. This experiment differed from the scientific method in the way that we were unable to form a hypothesis, law, or theory on the subject matter. The steps mentioned in the section about similarities were present, along with experiment. The steps mentioned in the section referring to differences were not present in this experiment. The entire project could, in at least a minute way, be related to the scientific method and all that it entails. ||

The law of conservation of mass is proved in an isolated system because nothing can leave or enter the system. There are different types of isolated systems. The law of conservation of momentum works in an isolated system which has no outside forces acting upon it. ||
 * Reflection; Systems 9/25/09 ||
 * To me a system is a group of things that work together to do something. Physicists define a system as "a set of objects that we cose, and which may interact with each other." Their definition differs from mine only in the way that they add that it's something chosen, whereas I do not.


 * Temperature, Heat, and Expansion Reflection 10/12/09 ||
 * Heat is related to kinetic energy and temperautre in a major way. Heat is the trasfer of kinetic energy from one thing to another. This is through a temperature difference. When there are multiple objects, the one with the highest temperature will have heat flow from it and into an object of lower temperature. Kinetic energy will change acording to the receiving or giving of heat. The temperature is in proportion to the average kinetic energy. ||


 * Energy Reflection 10/12/09 ||
 * Work has two categories. One category is work that goes against another force. This could be like potential energy, where an object is working against gravity. The other category is work to increase or decrease speed. Kinetic energy is related to this category because it can gain velocity due to the gravity pushing it along. The conservation of energy relates to potential energy and kinetic energy and work because they allow energy to transform into different forms in order to conserve energy. ||

The roller coaster lab also shows the conservaion of energy, as well as that energy goes from a more useful to a less useful state. As the coaster loses potential energy it gains the equivalents amount back as kinetic energy. The coaster goes from kinetic energy, a less useful form, to potential energy, which is a very useful form of energy. ||
 * Energy Reflection 10/12/09 ||
 * In the collisions lab, energy is conserved. As the collisions occur, energy is transformed from kinetic energy to potential energy and vice versa.

http://hartfordphysics.wikispaces.com/Mass+and+Spring+Clock ​(harmonic motion lab report)
[|Hartford School District] (Check here for important announcements) [] (HyperPhysics)