Environmental Science: Energy Resources (PDF)

2 1 ACTIVITY Tidal energy coal Wind energy Hydroelectric energy Geothermal energy Nuclear energy Solar energy Natural gas Biomas Petroleum / oil 2 1 PRE-TEST Get your ¼ sheet of paper.. Answer only  What is Energy resources  Energy resource refers to...

2 1 ACTIVITY Tidal energy coal Wind energy Hydroelectric energy Geothermal energy Nuclear energy Solar energy Natural gas Biomas Petroleum / oil 2 1 PRE-TEST Get your ¼ sheet of paper.. Answer only  What is Energy resources  Energy resource refers to any material that can be used as a basis or source of energy. Energy resources are used to generate electricity and other forms of power for human use. Energy resources in different forms of fuels are consumed at present, either for cooking and heating, electricity, or for other forms of energy conversion procedures. 2 types of energy Resources Renewable energy resources are types of energy that are easily replaced on our planet. Examples of these renewable resources are hydropower and biomass (e.g., plant fuels such as wood). While other renewable resources include wind, wave, tidal, solar, and geothermal. Some forms of fuels created from biomass (plants and animals) are also identified in this type. Non-renewable energy resources are obtained from dead plant and animal deposits created over a long period of time. These resources are vast, but limited, and are not renewable. Until recently, fossil fuels have provided for most people’s energy needs. These resources mainly include coal, oil, and natural gas. Certain deposits of radioactive elements in Earth’s crust can be classified as nuclear energy resources. These resources are used as fuel for nuclear fission-based power plants. The amount of these rare radioactive elements is limited on our planet and cannot be replenished. Through the years, there has been some research on fusion power, but it is still not proven to be a practical energy resource. This form of energy conversion aims to produce the energy from sustain fusion of hydrogen atoms into helium.  Why is energy resources indispensable? While energy is an indispensable factor in the survival of people and nations and in the progress of a country, we are enjoying the convenience brought about by the utilization of these resources. Major uses of these energy resources are as follows: food production and agriculture transportation residential and commercial lighting cooling heating system industrial processes generation of electricity 1. food production and agriculture; 2. transportation; 3. residential and commercial lighting, 4. cooling, 5. heating systems 6. industrial processes 7. and generation of electricity. 2 1 REVIEW  What is Energy resources  Energy resource refers to any material that can be used as a basis or source of energy. Energy resources are used to generate electricity and other forms of power for human use. 2 types of energy Resources  Why is energy resources indispensable? Major uses of these energy resources are as follows: (7) 1. food production and agriculture; 2. transportation; 3. residential and commercial lighting, 4. cooling, 5. heating systems 6. industrial processes 7. and generation of electricity. Assignment  Exploitation Environmental damages Global Warming Waste Natural Resources Precautionary Remedial Measures Ill effects Waste minimization sanctions Continuation… Through the years, humans always depend on these different energy resources in their daily activities. However, several factors contribute to the increase in energy consumption like Through the years, humans always depend on these different energy resources in their daily activities. However, several factors contribute to the increase in energy consumption like (1) the increase in population, (2) the increase in demand for resources, and (3) the rise in new technology. Because of these factors, the utilization of the different energy resources led to the following exploitation of man’s activities. Effects of these are as follows: THE DEPLETION OF FOSSIL FUELS THE DEPLETION OF FOSSIL FUELS The depletion of fossil fuels- like oil, coal, natural gases, and other nonrenewable energy sources. They, too are, not infinite. The fast-growing population, the increasing demand for resources, and the rise in technology contribute to the consumption of energy sources. The destruction of soil and soil erosion- During the exploration and extractionof fossil fuels, excavated soil is simply pushed over the side of the exploratory cut, creating ugly scars, landslides, and severe erosion problems.  Fossil fuels -- including coal, oil and natural gas -- are drilled or mined before being burned to produce electricity, or refined for use as fuel. Fossil fuels are the fuels formed by natural processes such as decomposition of dead and buried organisms. “ Greenhouse gas increased and Thermal pollution- All fuels and power consumed turn up as heat in the environment. They cause an increase in the temperature of the ecosystem which, causes ill effects on the organisms. Examples are combustions of fossil fuels; emissions from automobiles; and when the temperature of a river is increased, the amount of dissolved oxygen is decreased, a result in the death of the organism in the river. These are all results of global warming. Water and Material pollution- The energy in any kind of fuel is associated with a material substance, the fuel itself. During the process of consumption, this material substance is transformed into other substances like ashes, smoke, and other gaseous products which, are dumped into the environment as waste products. Radiation pollution- radiation pollution results from the utilization of nuclear energy. Therefore, nuclear waste disposal becomes a problem. Unlike sewage, these nuclear wastes cannot be treated in any way to reduce harmful radioactivity. If improperly disposed of, they cause contamination. Radiation causes cancer and abnormalities. Health hazards- all these types of pollution resulting from the utilization of energy have a common effect—health hazards. The most dangerous effects are the mutagenic effects (causing abnormal growths) carcinogenic effects (causing cancer), and teratogenic effects (causing birth defects) 1. The depletion of fossil fuels 2. The destruction of soil and soil erosion 3. Greenhouse gas increased and Thermal pollution 4. Water and Material pollution 5. Radiation pollution 6. Health hazards  While energy provides humankind all the conveniences in life, it also has its environmental impact. The increasing population, coupled with the increasing demand for resources, has contributed tremendously to the increasing energy consumption. Likewise, the rise in technology contributed to energy consumption. Increasing energy consumption led to the depletion of energy resources. End Assignment  Exploitation Environmental damages Global Warming Waste Natural Resources Precautionary Remedial Measures Ill effects Waste minimization sanctions End  QUIZ ¼ sheet of paper 1. Which of the following DOES NOT contribute to increased energy consumption? a. extraction and exploration of soil b. increase in demand for resources c. the rise in new technology d. population growth 2. Which of the following could potentially explain the projected decline in energy consumption in the Philippines? a. more available resources b. technological advancements c. a high rate of immigration into the country d. an increase in the number of young people in the population 3. Which among these health hazards causes birth defects? a. carcinogen b. dermatogen c. mutagen d. teratogen 4. Which of the following results from the utilization and exploitation of nuclear energy? a. air pollution b. water pollution c. thermal pollution d. radiation pollution 5. All fuels and power consumed turn up as heat in the environment. Which of the following results in the direct increase in temperature? a. global warming b. radioactive decay c. depletion of fossil fuels d. emission of factories and automobiles 6. What is one way in which CO2 emissions can be reduced? a. Reduce fertilizer use. b. Sequester carbon in the lithosphere. c. Keep ocean temperatures more constant. d. Use alternative, renewable sources of energy. 7. Which of the following can prevent soil erosion? a. overgrazing b. afforestation c. removal of vegetation d. increasing birds’ population 8. Which of the following is NOT a direct result of energy resource exploitation? a. advancement in technology b. depletion of energy sources c. global warming d. pollution 9. Which is an anti-forest conservation activity? a. clear felling b. preservation of fires c. economy in lumbering d. preservation of wild animals 10. Which of the following is NOT a major use of energy resources? a. food production and agriculture b. generation of electricity c. population growth d. transportation