Wind energy has many advantages but there are some possible downsides, including: intermittency, initial costs, wildlife impact, noise and appearance. These downsides can be broadly categorized as technology, cost and environmental impact.Know More
Wind energy only works when the wind is blowing at a sufficient speed. Energy is hard to store, so other forms of energy need to work in concert with wind to provide consistent reliable power. One advantage for wind compared to solar is that wind power is not based on time of day.
The cost to acquire land, install turbines and build other infrastructure is high compared to some other forms of energy. As turbine technology has improved, the costs to install and operate wind farms have come down to a rate that is competitive with other forms of energy. Efficiency is achieved by grouping many wind turbines together in high wind areas.
Wind turbines are big, and up close they are noisy, and to some they look ugly. These issues are inherent in current wind technology, so locations should be selected that conform to community standards and impact the local environment the least.
Finally, wind turbines do kill wildlife. Studies have shown that birds and bats are at risk, but the impact varies widely across wind-resource areas. Studies are ongoing to determine the factors involved to try to minimize the impact.Learn more about Environmental Science
The negative aspects of biomass energy are similar to those associated with the use of fossil fuels for generating electricity, with the exception that biomass fuels are renewable energy sources. Burning of biomass fuels causes concerns about emissions and water use. Biomass fuels are less efficient and require more land.Full Answer >
A number of things such as glass, lubricants, electronic components, solar panels and a variety of medical equipment are made of silicon. The majority of sand found around the world is composed mostly of silica, which is an oxide of silicon.Full Answer >
Solar energy is important because the sun is a sustainable source of energy that can be used to power homes and businesses globally. Fossil fuels are finite, so it's important that alternative energy sources be embraced. As of 2014, it is widely believed that fossil fuels are causing global warming.Full Answer >
An energy pyramid is a graphical representation of how energy flows in an ecosystem The pyramid consists of trophic, or nutritional, levels. It shows how energy decreases and becomes less available for organisms as it enters every trophic level, as well as the amount of energy lost to the atmosphere in the form of heat.Full Answer >