appropriate methods to answer scientific questions and solve problems Why are Daphnia cultures ‘pre-incubated’ for 5 minutes under specified conditions‚ prior to experimentation? Criterion 4: Risk management – laboratory work Safety issues arise in all practical work‚ whether laboratory-based or field studies. In science laboratories there are a range of potential hazards that must be identified. Think about these‚ bearing in mind the experiment to be undertaken. ■ ■ ■ ■ List the
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negative charge of an electron is equal to the positive charge of a proton‚ and the number of electrons in an atom is usually equal to the number of protons. When the balancing force between protons and electrons is upset by an outside force‚ an atom may gain or lose an electron. When electrons are "lost" from an atom‚ the free movement of these electrons constitutes an electric current. Electricity is a basic part of nature and it is one of our most widely used forms of energy. We get electricity
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My point of view on this matter comes from experience at the prison. For something to work‚ the person has to use it first. By just buying a vacuum cleaner doesn’t make the house clean. The individual has to use the vacuum cleaner to clean the house then it will be clean. The same idea with the inmates‚ by just providing the programs and classes doesn’t make them better. There a lot of programs that are offered inside a prison that inmates can take advantage of but there are multiple problems as
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HOW THE BRAIN WORKS Everything we do‚ every thought we have is produced by the human brain. Despite the brains intelligence it can still be fooled by a simple magic trick. Also according to the video I watched its shows how a magnetic wind can control a human body and their speech when attached to the head. Brains are like finger prints and they are totally different as everybody. Exactly how the brain operates remains one of the biggest mysteries. Tyson‚ who is the movie interpreter‚ went to Las
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How lungs Work Your lungs are part of a group of organs and tissues that all work together to help you breathe. This system is called the respiratory system. The main job of the respiratory system is to move fresh air into and get waste gases out of the body. Lungs are very important because Oxygen‚ a basic gas‚ is needed by every cell in your body in order to live. The air that comes into the body through the lungs contains oxygen and other gases. In the lungs‚ the
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How Yoga Works When I began seriously letting my practicing of yoga permeate my life I began my journey with teacher training and extensions‚ a part of that “How Yoga Works” was a reading suggestion. This turns out to be the perfect book for me to have started my journey with. What we have in this book is a fictional story about a yoga teacher and her student. Without giving too many details away‚ this story is a vehicle for illustrating the applications of yoga sutras to life and the
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How Guns Work A gun is a weapon that uses the force of an explosive propellant to project a missile. Guns or firearms are classified by the diameter of the barrel opening. This is known as the calibre of the gun. Anything with a calibre up to and including . 60 calibre(0.6 inches) is known as a firearm. The precise origin of the gun is unknown‚ although they were in use by the early 14th century and were common place in Europe by mid-century. These early guns were nothing more than large
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An Investigation into How a Pendulum Works Isaac Olson Mitch Koebnick‚ Kyle Orr 13 September 2013 A Period Purpose There are three purposes of this experiment. The first purpose is to determine the relationship of the period and the amplitude of the pendulum. The second purpose is to determine the relationship of the period and the mass of the pendulum. The final‚ but most certainly not the least‚ purpose of this experiment is to determine the relationship of the period and the length
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In this article‚ I’ll discuss the basic idea behind an engine and then go into detail about how all the pieces fit together‚ what can go wrong and how to increase performance. The purpose of a gasoline car engine is to convert gasoline into motion so that your car can move. Currently the easiest way to create motion from gasoline is to burn the gasoline inside an engine. Therefore‚ a car engine is an internal combustion engine -- combustion takes place internally. Two things to note: There
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An Example of How Oracle Works The following example illustrates an Oracle configuration where the user and associated server process are on separate machines (connected via a network). 1. An instance is currently running on the computer that is executing Oracle (often called the host or database server). 1. A computer running an application (a local machine or client workstation) runs the application in a user process. The client application attempts to establish a connection to the server
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