Solar power has now become affordable enough to be used for domestic purposes including garden lighting, although it is also used on a larger scale to power entire neighbourhoods. This means that not all sources used by the renewable energy industry are green. The key with these energy resources are that they don't harm the environment through factors such as releasing greenhouse gases into the atmosphere. Trace the path of energy and see how energy is converted from one form to another. Create energy pathways to show where our energy comes from. Student exploration energy conversion in a system answer key pdf pg 301. 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. This will only improve as costs continue to fall, further increasing the accessibility of green energy, especially in the developing world. Readily replenished, these energy sources are not just good for the environment, but are also leading to job creation and look set to become economically viable as developments continue. As we touched upon earlier, there is a difference between green, clean and renewable energy. Quiz yourself when you are done by dragging vocabulary words to the correct plant Moreabout Flower Pollination.
Help with many parts of the process by dragging pollen grains to the stigma, dragging sperm to the ovules, and removing petals as the fruit begins to grow. Creating energy with a zero carbon footprint is a great stride to a more environmentally friendly future. 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. These include solar water heaters, biomass fuelled boilers and direct heat from geothermal, as well as cooling systems powered by renewable sources. How does energy get from one place to another? Green energy has the capacity to replace fossil fuels in the future, however it may require varied production from different means to achieve this. Observe the steps of pollination and fertilization in flowering plants. 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. Student exploration energy conversion in a system answer key pdf free. 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. Describe four types of renewable resources. Industrial Processes. The energy stored under the United States alone is enough to produce 10 times as much electricity as coal currently can. 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. Green sources also often avoid mining or drilling operations that can be damaging to eco-systems.
This is not just good for the planet but is also better for the health of people and animals that have to breathe the air. This type of green power uses thermal energy that has been stored just under the earth's crust. Green energy is any energy type that is generated from natural resources, such as sunlight, wind or water. Other factors also work in favour of green energy, such as the ability to produce relatively inexpensive localised energy solutions, such as solar farms. It often comes from renewable energy sources although there are some differences between renewable and green energy, which we will explore, below. At the same time as fossil fuels become more expensive, the cost of greener energy sources is falling. This renewable resource also needs to be carefully managed in order to be truly labelled as a 'green energy' source. The main sources are wind energy, solar power and hydroelectric power (including tidal energy, which uses ocean energy from the tides in the sea). However, the same can be said of solar panels, which are also seeing a great deal of development. Where does energy come from? Advances in composites technology and testing has helped improve the life-span and therefore the LEC of wind turbines.
Biomass power plants use wood waste, sawdust and combustible organic agricultural waste to create energy. Of course, environmental damage would prevent a source truly being 'green, ' but when all of these factors are combined it creates what is known as a 'Levelised Energy Cost' (LEC). Each of these technologies works in different ways, whether that is by taking power from the sun, as with solar panels, or using wind turbines or the flow of water to generate energy. Heating and Cooling in Buildings. The cyclical nature of the two processes can be constructed visually, and the simplified photosynthesis and respiration formulae can be Moreabout Cell Energy Cycle. 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. Green energy can also lead to stable energy prices as these sources are often produced locally and are not as affected by geopolitical crisis, price spikes or supply chain disruptions. Understanding the economic viability of green energy requires a comparison with fossil fuels. Green energy looks set to be part of the future of the world, offering a cleaner alternative to many of today's energy sources. Exactly how 'green' the following three types of green energy are is dependent on how they are created….
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. Sustainable biofuels and renewable electricity are growing in use for transportation across multiple industry sectors. In order to be deemed green energy, a resource cannot produce pollution, such as is found with fossil fuels.