What I’ve learned in EGEE
When I was first told in class that I had to write my first essay in EGEE about what I knew about energy, I figured it would be easy. I knew what everyone knew about energy: some comes from the sun, some is used to make machines work, and some is used to make our bodies work. However, after the first four weeks of EGEE I’ve learned more about energy than I learned in four years of high school. I’ve learned definitions of energy, power, and heat to name a few, and I’ve also learned different units of energy and power measurements.
The first things we learned in EGEE I thought I already knew, but I only had superficial knowledge about such things energy, heat, and radiation. For example, I thought that energy was simply the ability to work. However I learned that it is the capacity to do work (Kraushaar and Ristinen 8), generating heat, and emitting radiation (lecture 1/9/02). I also learned that the formula for energy is work = force x distance (1/9/02). Heat, we learned, is the ability to change the temperature or phase of a substance; radiation is energy emitted in the form of waves traveling at the speed of light (1/11/02). I always thought that heat was the temperature of something, and radiation was emitted from microwaves and nuclear waste. Now I know more about these things than I did before.
I also learned about the units of measurement for energy, power, and temperature. The btu, or British thermal unit, is the amount of energy required to raise the temperature of one pound of water by one degree Fahrenheit (Kraushaar and Ristinen 13-14) and the Calorie is the amount of energy required to raise the temperature of one kilogram of water by one degree Celsius (1/11/02). A joule is the energy unit for the metric system, and 1055 joules = one btu = 0.252 Calories (1/11/02). Also, we learned that one gallon of gasoline is equal to 124,000 btus, one pound of coal is equal to 13,000 btus, and one cubic foot of natural gas is equal to 1,000 btus (1/11/02).
These three sources "Energy Story", "Conducting Solutions", and a video clip "Hands-On Science" share explanations, demonstrations, and descriptions on science experiments to accomplish its purpose. In "Energy Story," it explains the use of electricity people use in their homes, and what makes it. In the video "Hands-On Science" by AnnMarie Thomas, it shows how to make homemade playdough and compare it to store brand playdough. In "Conducting Solutions" by Rodney Schreiner, it shows how certain ions have positive and negative charges. These three sources based on science show us different experiment and how to accomplish them.
The greatest advantage of the early rifles was that the weapon could be mastered in a matter of months, but it could take up to ten years to master the bow. Eventually the muskets overtook the battlefield, replacing t...
In "Energy Story" the article tells you about the makeup of an atom and the type of things that the different numbers of protons, neutrons, and electrons do and make. This article is very informative like the others, but in a different way. In this article the main focus is on the buildup of an atom.
In the article,"Energy Story", it tells you all about basic energy and how scientists found out how it works. It tells you about each part of an electron and what part is what. The center is called the Nucleus. Electrons and atoms move together to create what is known as electricity. Atoms and electrons flow through an object
In 1843 James Joule read his paper to the British Association, entitled "On the Calorific Effects of Magneto-Electricity and on the Mechanical Value of Heat." This paper described the physical constant that showed that heat was a form of energy. This constant is known as "J", or "Joule's Equivalent." The unit of heat, work and internal energy are measured in joules (J).
Radiation is when the heat energy travels in actual waves. The suns energy gets to earth because of radiation. These three types of heat transfer can be easily found in the activities we have been doing the past couple of weeks having to do with a universal dwelling. They can mostly be seen when we are trying to test the heating and cooling capabilities of our universal home model.
...eas that had been around for a long time but had also been thought to be different. He put together the concept of mass and the concept of energy and showed that they are actually the same thing when you think about them correctly. So his equation, E = mc2, theE is for energy and the m is for mass, and he showed that given a certain amount of mass you could calculate the amount of energy it contains. Or, alternatively, given an amount of energy, you can determine how much mass you can create from it. So mass and energy, he showed, are the ultimate convertible currencies. They are different carriers of some fundamental stuff that you can call energy, with mass simply being one manifestation of energy. But there are other manifestations: heat and light, radiation, and so forth. These are now recognized to all be different facets of one idea, one entity called energy.
Binge-eating disorder, previously known as compulsive eating disorder, is when a person overeats and keeps on eating even when they are completely full. That individual eats even when they are not hungry and become uncomfortably full. The person gets embarrassed and will tend to hide from their peers. They will eat in hiding. Social pressure for thinness. The difference between binge-eating disorder and bulimia is that binge-eating disorder lasts a whole day while bulimia lasts for a few hours. Just like bulimia, the person eats alone to avoid embarrassment and usually eats till it is painful. Stress is a huge factor that causes binge eating. There is two types of binge-eating disorder, first one being deprivation-sensitive binge eating.
Energy is the ability to cause change. A type of energy is the powerful rays of the sun. The suns beams are Radiant energy when it hits Earth. Energy comes in different forms such as: heat and sound. When you see things it is reflected of your eyes. Light affects how we see things around us. Thomas Edison designed the first-long lasting incandescent light bulb in 1879. Light travels in waves and is emitted from a source. The sun gives of Visible and Ultraviolet light. Light waves have peaks and valleys. The peaks and valleys have wavelengths. It depends on the type of the light. There is light on an Electromagnetic spectrum and it has all types of different lights. The Electromagnetic spectrum has different types of rays. The sun emits different types of light. It gives of Infrared light, Visible light, and Ultraviolet light. The shortest wavelengths are: Gamma rays, X-rays, and Ultraviolet rays. The longest wavelengths are: Infrared rays, Radar, F...
Tying to the idea of electrical energy, Hopkins continues identifying the world, the testimony of God’s grandeur, with powerful sources of light and heat...
Electricity and electrical components are a major part of our lives today. Our lives pretty much come to a halt if there is a power outage or if our electrical devices stop working, sometimes we even start panicking because we are so dependent on these components that we cannot afford to lose them and their importance and use only increases as time passes. We all use these electrical devices and also electricity itself but most of us do not think about the math and physics that works behind all of these things.
The primary characteristics of binge eating disorder include eating, in a discrete period of time, an amount of food that is definitely larger than most people would eat in a similar period of time under similar circumstances and a sense of lack of control over eating during the episode. Since binge eating disorder has many etiological factors, it is necessary to take an integrative approach when treating it. This involves incorporating a multidisciplinary team. It is also important to tailor the treatment to the individual’s needs. Therefore, the type of treatment used often depends on the individual’s goals and the clinician’s perspective. Another critical factor when attempting to treat binge eating disorder is recognizing, diagnosing,
In order for a system to gain energy the surroundings have to supply it, and visa versa when the system looses energy the surroundings must gain it. As the energy is transferred it can be converted form its original form to another as the transfer takes place, but the energy will never be created or destroyed. The first law of thermodynamics, also known as the law of conservation of energy, basically restates that energy can’t be destroyed or created “as follows: the total energy of the universe is a constant.” All around the conservation of energy is applied. When gasoline burns in the engine of a car, an equal amount of work and heat appear as the energy is released. The heat from the engine warms its surroundings, the cars parts, the air, and the passenger area. The heat energy is converted into the electrical energy of the radio, chemical energy of the battery, and radiant energy of the lights. The change in the sum of all of the energies formed from the burnt gasoline would be equal to the “…change in energy between the reactants and products.” Biological processes, like photosynthesis, also follow energy conservation. The green plants convert the radiant energy emitted by the Sun into useful chemical energy, such as the oxygen that we breathe. The energy transferred between any surroundings and any system can be in the form of various types of work, chemical, mechanical, radiant, electrical, or heat.
According to Holt Physical science, work is the “transfer of energy to a body by the application of a force that causes the body to move in the direction of the force” (Holt 378). Work is equal to force multiplied by distance, meaning that in order to do work something has to move. Energy is “the capacity to do work” (Holt 73). Energy is transferred or transformed whenever work is done. Work requires an object to experience a change in position or motion but energy can be present even when nothing appears to be happening. Both work and energy are measured in Joules.
I myself was guilty of the common misconception of what technology refers to. I too, believed that technology only refers to devices with a plug. It wasn’t till recently after class and after reading Chapter 2 in STEM Lesson Essentials that I realized that technology expresses a profound multitude of products, processes and systems. While the students evolve and become STEM literate they need to be able to comprehend and determine technologies and their use in the world, and then reach out and fix or find away to make it even better then it already is. The addition of the T and E can make the traditional S and M come alive for our students. (Vaques, Sneider and Comer page