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Green energy is any energy type that is generated from natural resources, such as sunlight, wind or water. Observe the effect of each variable on plant height, plant mass, leaf color and leaf size. Geothermal energy has been used for bathing in hot springs for thousands of years and this same resource can be used for steam to turn turbines and generate electricity.

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We are still some years away from this happening, but the fact remains that this is necessary to reduce climate change, improve the environment and move to a more sustainable future. Identify ways that energy is converted from one form to another. Sunlight provides energy for plant growth. However, by bringing together multiple green energy sources to meet our needs, and with the advancements that are being made with regards to production and development of these resources, there is every reason to believe that fossil fuels could be phased out. You can change the amount of light each plant gets, the amount of water added each day, and the type of soil the seed is planted in. Learning Objectives. Determine that sunlight is the primary source of most of the usable energy on Earth. Student exploration energy conversion in a system answer key pdf answers sheet free. Click the links below to skip to the section in the guide: As a source of energy, green energy often comes from renewable energy technologies such as solar energy, wind power, geothermal energy, biomass and hydroelectric power.

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Even when the full life cycle of a green energy source is taken into consideration, they release far less greenhouse gases than fossil fuels, as well as few or low levels of air pollutants. Automotive is an obvious example as electrification advances to replace fossil fuels, but aerospace and construction are other areas that are actively investigating electrification. The main sources are wind energy, solar power and hydroelectric power (including tidal energy, which uses ocean energy from the tides in the sea). Green energy is important for the environment as it replaces the negative effects of fossil fuels with more environmentally-friendly alternatives. The six most common forms are as follows: 1. Also known as hydroelectric power, this type of green energy uses the flow of water in rivers, streams, dams or elsewhere to produce electricity. In fact, the total efficiency of usable energy for coal is just 29% of its original energy value, while wind power offers a 1164% return on its original energy input. The key with these energy resources are that they don't harm the environment through factors such as releasing greenhouse gases into the atmosphere. The interest, investment and development of green energy solutions is bringing costs down as we continue to build up our knowledge and are able to build on past breakthroughs. Hydropower can even work on a small scale using the flow of water through pipes in the home or can come from evaporation, rainfall or the tides in the oceans. Student exploration energy conversion in a system answer key pdf for 7th grade. 7% of the world's fuel for transport in 2010, the biofuels are estimated to have the capacity to meet over 25% of global transportation fuel demand by 2050. This includes assessing the energy used to create the green energy resource, working out how much energy can be translated into electricity and any environmental clearing that was required to create the energy solution. Particularly suited to offshore and higher altitude sites, wind energy uses the power of the flow of air around the world to push turbines that then generate electricity.

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The fact is that fossil fuels need to become a thing of the past as they do not provide a sustainable solution to our energy needs. However, the same can be said of solar panels, which are also seeing a great deal of development. The cyclical nature of the two processes can be constructed visually, and the simplified photosynthesis and respiration formulae can be Moreabout Cell Energy Cycle. Heating and Cooling in Buildings. Efficiency in green energy is slightly dependent on location as, if you have the right conditions, such as frequent and strong sunlight, it is easy to create a fast and efficient energy solution. Contact us to find out more and see how we could help advance your energy project: Related Frequently Asked Questions (FAQs). Student exploration energy conversion in a system answer key pdf pg 301. Advances in composites technology and testing has helped improve the life-span and therefore the LEC of wind turbines. Renewable energy is often seen as being the same, but there is still some debate around this. Creating energy with a zero carbon footprint is a great stride to a more environmentally friendly future. In order to be deemed green energy, a resource cannot produce pollution, such as is found with fossil fuels. Due to the local nature of energy production through sources like solar and wind power, the energy infrastructure is more flexible and less dependent on centralised sources that can lead to disruption as well as being less resilient to weather related climate change. Exactly how 'green' the following three types of green energy are is dependent on how they are created…. Green energy also represents a low cost solution for the energy needs of many parts of the world. However, to truly compare different energy types it is necessary to analyse the full life cycle of an energy source.

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This common type of renewable energy is usually produced using photovoltaic cells that capture sunlight and turn it into electricity. Green energy is that which comes from natural sources, such as the sun. Describe four types of renewable resources. Constantly replenished, these energy sources are the direct opposite of the unsustainable, carbon emitting fossil fuels that have powered us for over a century. Observe the steps of pollination and fertilization in flowering plants. Currently, wind farms are seen as the most efficient source of green energy as it requires less refining and processing than the production of, for example, solar panels.

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It often comes from renewable energy sources although there are some differences between renewable and green energy, which we will explore, below. Having supplied just 2. Solar cells convert sunlight to electricity. The energy stored under the United States alone is enough to produce 10 times as much electricity as coal currently can. Plants or plant remains can be burned or eaten to provide energy. The fact is that as easily-reached fossil resources begin to run out, the cost of this type of energy will only increase with scarcity. Sustainable biofuels and renewable electricity are growing in use for transportation across multiple industry sectors. Create energy pathways to show where our energy comes from. Biomass power plants use wood waste, sawdust and combustible organic agricultural waste to create energy. There are plenty of examples of green energy in use today, from energy production through to thermal heating for buildings, off-highway and transport. At the same time as fossil fuels become more expensive, the cost of greener energy sources is falling.

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Derived from natural resources, green energy is also often renewable and clean, meaning that they emit no or few greenhouse gases and are often readily available. Trace the path of energy and see how energy is converted from one form to another. This is slightly confused by people often using these terms interchangeably, but while a resource can be all of these things at once, it may also be, for example, renewable but not green or clean (such as with some forms of biomass energy). Green energy sources are usually naturally replenished, as opposed to fossil fuel sources like natural gas or coal, which can take millions of years to develop. Green energy solutions are being used for buildings ranging from large office blocks to people's homes.

Sunlight causes wind and rain, powering wind turbines and hydroelectricity. Find out how electrical current is generated and how living things get energy to move and grow.

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