Transcript Resources
RESOURCES Renewable And Nonrenewable NATURAL RESOURCES Natural resources – the parts of the environment that are useful or necessary for the survival of living organisms. Renewable resources – any natural resources that is recycled or replaced constantly by nature. Nonrenewable resources – natural resources that are used up more quickly than can be replaced by natural processes. NONRENEWABLE RESOURCES Fossil Fuels Coal Oil or Petroleum Natural Gas Minerals Metals NONRENEWABLE RESOURCES FOSSIL FUELS Coal, oil, and natural gas are nonrenewable resources that supply energy. Most of the energy you use comes from these fossil fuels. Fossil fuels are formed in the Earth’s crust over hundreds of millions of years. Cars, buses, trains, and airplanes are powered by gasoline, diesel fuel, and jet fuel which are made from oil. NONRENEWABLE RESOURCES FOSSIL FUELS Coal is used in many power plants to produce electricity. Natural gas is used in manufacturing for heating and cooking, and sometimes as a vehicle fuel. NONRENEWABLE RESOURCES FOSSIL FUELS Minerals and metals found in Earth’s crust are nonrenewable resources. Petroleum, diamonds, and graphite (in pencil led) are all minerals. Iron, copper, gold, silver, tungsten, uranium, and aluminum (used in drink cans) are all metals. Many manufactured items, like cars, are made from nonrenewable resources. NONRENEWABLE RESOURCES FOSSIL FUELS CONSERVATION Billions of people all over the world use fossil fuel everyday, and because they are nonrenewable the Earth’s supply is limited. In the future the fossil fuels will become more expensive and difficult to obtain. The use of fossil fuels can lead to environmental problems because it must be burned to release the energy stored in them. NONRENEWABLE RESOURCES FOSSIL FUELS CONSERVATION The burning of fossil fuels produce waste gases and acid rain. For this, people suggest reducing the use of fossil fuels and finding other sources of energy. NONRENEWABLE RESOURCES FOSSIL FUELS How can you help? Switch off the light when you leave a room. Turn off the TV when you are not watching it. Car pool or use public transportation. Walking or riding a bike. Doing these simple things can reduce the use of fossil fuels – the less you use, the more money you save. RENEWABLE RESOURCES 1. 2. 3. 4. 5. Solar Power Wind Power Hydroelectric Power Nuclear Power Geothermal Power RENEWABLE RESOURCES SOLAR Solar energy is one of the leading alternative sources of energy. It is also one of the most inexhaustible sources of energy. One use of solar energy is in solar heated buildings. These buildings are made of large windows and the floors and walls made of heat storing materials that release energy slowly throughout the night keeping the building warm. RENEWABLE RESOURCES SOLAR Solar cells or photovoltaic cells turn sunlight into electricity. These cells are very small and very easy to use, but they only produce energy when in sunlight, so batteries are needed to store electricity for use at night or on cloudy days. PV cells are very expensive to use for generating large amounts of electricity. RENEWABLE RESOURCES WIND POWER Wind is another renewable energy source that can be used for electricity . This source also does not cause air pollution, but electricity can only be produced when the wind is blowing. When the wind is blowing at least 32 km/h, the turbines will turn and energy will be produced. RENEWABLE RESOURCES HYDROELECTRIC POWER Hydroelectricity involves power being generated by hydraulic turbines that rotate due to moving water as it flows from a higher to lower elevation. Twenty percent of the world's electricity is produced by hydropower plants and there are over 2,000 hydropower plants in the United States, providing approximately 10 percent of our total electricity. RENEWABLE RESOURCES NUCLEAR POWER Nuclear energy is released when billions of atomic nuclei from uranium are split apart in a nuclear fission reaction. RENEWABLE RESOURCES GEOTHERMAL Geothermal power plants supply heat and electricity to about 90% of the homes in Iceland. Outdoor swimming areas are also heated by geothermal energy. CONSERVATION Conservation can help prevent shortages of natural resources, slow growth of land fills, reduce pollution levels, and save money. Conservation includes reducing the use of natural resources. Conservation includes reusing natural resources. RECYCLING Recycling – reprocessing an item or natural resource for reuse. Different types of plastics can be sorted for recycling by recycle codes. RECYCLING Steel and other metals are often recycled. Glass bottles and jars can be reused or melted and reformed into new glass productions. RECYCLING Paper can be recycled to form new paper products. Vegetation waste can be composted and used as soil-enriched fertilizer. Buying recycled products promotes conservation.