“The energy for life comes from the sun.” Outline the role of the photosynthesis process to explain what is meant by this statement. (3 marks) chlorophyll 6CO2(g) + 6H2O(l) + energy C6 H12 O6 (aq) + 6O2(g) 2830 kJ glucose Photosynthesis is the process in which plants use the sun’s light energy to convert carbon dioxide and water into carbohydrates such as glucose‚ sucrose‚ starch and cellulose. Carbohydrates are high energy compounds
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CHAPTER 7 LECTURE SLIDES Respiration • Organisms can be classified based on how they obtain energy: • Autotrophs – Able to produce their own organic molecules through photosynthesis • Heterotrophs – Live on organic compounds produced by other organisms • All organisms use cellular respiration to extract energy from organic molecules Cellular respiration • Digestion – enzymes breaking down large macromolecules into smaller ones. • Cellular respiration is a series of reactions
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Definition of Wind Energy “Wind Energy - Energy received from the movement of the wind across the earth. This energy is a result of the heating of our oceans‚ earth‚ and atmosphere by the sun. Turbines convert the kinetic energy of wind into mechanical or electrical energy that can be used for power.” The German physicist Albert Betz calculated in 1919 the possible maximum amount of energy that can be extracted out of wind energy. He came to the result of 59.3% that can be extracted and named this
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Writing Practice Renewable energy has a positive effect on economy. Do you agree? As the fossil fuels resources have been continually mind in recent years. The lack of energy resources is one of the greatest challenges faced by government in Australia. Therefore‚ the new energy resources are promoted and developed such as nuclear power and renewable energy. Some in Australia argued that development of new energy resources not only alleviates the shortage of fossil fuels resources and protects
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Solar Energy: Earth’s Future Imagine our planet with clean‚ fresh air. No pollution throughout our whole world. This image is a possibility‚ using solar energy. Solar energy is the harnessing of the sun’s energy and converting it into energy that we can use to accomplish tasks. Everybody should get involved in solar energy because it helps improve our environment‚ is efficient in terms of saving money and time‚ and helps us prepare for the living of future generations. Solar energy is becoming
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Hydraulics – CIVL 2130 Conservation of Energy Aim The aim of this lab experiment is to observe the flow behaviour of water through a pipe of variable section. Firstly‚ we will investigate the interchange of pressure and kinetic energy at each diameter change. Secondly‚ we will study the application of this interchange to the flow metering devices. Lastly‚ energy losses due to friction and pressure effects are estimated. Experimental Apparatus [pic] Pre-lab Question Pressure varies
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| CHOITHRAM INTERNATIONAL…because every child deserves the best. | | ACADEMIC SESSION 2011-2012 Name: ……………………………………………….. Grade: MYP 5 Subject: Physics Criteria for Assessment CRITERIA A: One world CRITERIA B: Communication in science Introduction: Task: Research and write an essay on “ use of nuclear fuel to solve the problem of energy crisis”. (800–1200 words) * The essay would be hand written on an A4 size paper and
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having worked in the oil industry for five years and seeing first hand the impact oil production may have on our planet the experience caused me to ask myself‚ “Is there a better way?” This and many other questions sparked curiosity to the effects our current methods have on our people and the way we live and work. On a global scale renewable energy supplies a significant benefit to our planet such as‚ lowering energy costs‚ job creation‚ and preserving the environment. With energy costs continuously
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of photosynthesis. Gases like Sulfur dioxide and nitrogen oxide can cause acid rain. Water pollution in terms of Oil spill may lead to death of several wildlife species. 2. Human Health : The decrease in quality of air leads to several respiratory problems including asthma or lung cancer. Chest pain‚ congestion‚ throat inflammation‚ cardiovascular disease‚ respiratory disease are some of diseases that can be causes by air pollution. Water pollution occurs due to contamination of water and may pose
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difference between alternative energies (AE) and fossil fuels? Alternative energies will not have a lot of pollution‚ but fossil fuels will cause some pollution of the environment. Some fossil fuels causes environmental pollution‚ for example‚ global climate change‚ a lot of carbon dioxide cause the greenhouse effect‚ acid rain emissions of harmful gases cause serious pollution to the atmosphere. 2/ name the AE that you have chosen to research. Solar Energy 3/ identify the – source or origin of
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