McKenzie Smith Science 8-5 February 10‚ 2011 RSV Final Draft Energy Pathways This reading is about food chains‚ food webs‚ and food pyramids. The sun is the source of energy in a food chain. The energy from the sun can only be used by producers. The producers get eaten by consumers. A consumer is a herbivore‚ a carnivore‚ or an omnivore. Fungi and decay bacteria are decomposers. Decomposers break down and recycle dead things and make the soil better for producers. Food webs are the overlapping
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With reference to located examples‚ explain why the exploitation of energy resources brings both opportunities and problems to local communities. (25 ) With reference to located examples‚ explain why the exploitation of energy resources brings both opportunities and problems to local communities . (25 ) • Opportunities may include: employment‚ education & training‚ higher more reliable wages‚ improved infrastructure‚ increased facilities‚ e.g. medical‚ social benefits etc. • • Problems may include:
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Energy Systems Our body needs a supply of energy to complete day to day tasks and to simply be able to move. We have more than one energy system‚ we have 3 in total and these are * ATP (anaerobic) * Lactic acid (anaerobic) * Aerobic (aerobic) All three off these energy systems are fuelled by the same chemical called ADP-PC. These systems produce this chemical at different speeds‚ for example the ATP system produces the chemical very fast as for the aerobic energy system produces it
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Heat Heat is the transfer of energy from a hot object to a colder object‚ such as when toasting a slice of bread. The heat transfers onto the slice of bread which results in warm toast. When the slice of bread is heated‚ many things change; for example‚ the texture turns crunchy‚ the bread hardens‚ and the colour darkens. Where does the toast get its heat from? The toaster. Toaster A toaster is an electric small appliance designed to toast sliced bread by exposing it to heat. When a slice of bread
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Kinetic Energy: Consider a baseball flying through the air. The ball is said to have "kinetic energy" by virtue of the fact that its in motion relative to the ground. You can see that it is has energy because it can do "work" on an object on the ground if it collides with it (either by pushing on it and/or damaging it during the collision). The formula for Kinetic energy‚ and for some of the other forms of energy described in this section will‚ is given in a later section of this primer. Potential
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of important concepts in Chapter 5 concerning energy and how reactions are facilitated in cells. In this conference please provide a brief description of one of the following topics: What is energy? The capacity to cause change‚ or to move matter in a direction it would not move if left alone. A child pushing a ball‚ the energy is transferred from the muscle of the child to the ball forcing the ball to move. What is kinetic energy? The energy of motion‚ moving matter performs work by transferring
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Energy Crisis in Pakistan “What does ‘LOL’ stand for in Pakistan? ‘Lots-of-Loadshedding’.” [Introduction] Pakistan is energy-deficient. How can one imagine an active and prosperous human being short on blood? Life is hard without sufficient blood running up and down the veins‚ pumped by the heart round the clock. Pakistan has failed to contain its energy crisis; failing to increase supply proportionately and conserving demand. In 1980s‚ it met 86% of its demand; come 2000s‚ situation is getting
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the object in the direction of the force. The work done is measured in joule in the SI system after the scientist James Prescott Joule. Erg is the CGS unit of work. Conditions for work to be done: A net force should act on an object. The object must be displaced in the direction of the net force. Work is said to be done when an object is displaced on applying a certain force. W = F × s‚ Where W = Work done on an object F = Net force on the object s = Displacement of the object Joule is defined
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Energy crisis in Pakistan Energy is the bloodline of a country’s economy. A continuous and sufficient energy `supply can ensure a healthy and progressive economy. Pakistan is unfortunate to face severe energy crisis in recent years. The parting gap between demand and supply is mounting with every year and it is pushing the country into dark ages. Worst part of this menace is the fact the installed capacity of electricity can not only fulfill the energy demand but can also produce surplus amounts
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CONSERVATION OF ENERGY OBJECTIVE The purpose of this experiment is to calculate the gravitational potential energy through experimental values‚ to calculate the theoretical potential energy given the experimental kinetic energy in an isolated system while also using the kinetic energy to find the spring constant‚ and to compare kinetic energies and potential energies in an isolated system to see if they are equivalent. METHOD To calculate the gravitational potential energy through experimental
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