Essay The Various Renewable and Non- Renewable Energy Sources

1951 Words 8 Pages
Electricity is a vital service a majority of the world uses on a daily basis. If it were to be depleted, many of us would not know what to do. Thankfully, however, not all sources of energy are non-renewable (although the renewable sources do have their downsides). Some sources are more prevalent in certain areas, while they may be extremely scarce in others; on the contrary, some sources are found all over the world, but only in trace amounts. The world around us uses many different types of electrical energy and a variety of sources from which that energy may be extracted. Solar power, biomass, wind, oil, gas and coal energy all have their positive and negative effects on the environment, animals and human beings. Without them, the …show more content…
Transistors act as switches or amplifiers in an electrical appliance through the use of small-voltage-directed currents. Once the photo-resistor detects no light reaching the solar panel, it will allow the current to flow and complete the circuit, allowing the bulb to light up.
In order to use solar power predominantly, however – whether it is in a household or a whole country – it must be continually present. In many parts of the world, it is not so; cloudy weather is fairly common in most inhabited areas and in some, the sun barely shines. To set aside an area for solar panels alone would disrupt the ecosystem there, as well. In sum, solar energy is easy to harness and extremely available in certain areas, but it can pose difficult challenges at times.

Biomass is the energy found in most organic materials. For example, many plants including trees, straw and vegetables carry energy converted from the sun. When plants employ the process of photosynthesis to make their food (CO2 (g) + H20 (l) + energy from the sun–> O2 + C6H12O6(s )+ H2O (g)), some of the energy is stored within the plants rather than being given off as heat. It is constantly renewable, as the goal of many living things is to reproduce before expiring. The most common way of using biomass is burning wood and other plants to release thermal and light energy, then in turn using those to power PV cells or thermocouples, which convert thermal energy into…