[caption id="attachment138" align="alignleft" width="199" caption="Photo by taryn*"][/caption]
Like the opening post on this page says, every week students will be contributing posts of the week in review. Sometimes the post will be a story that the student found interesting, other times it will be a recap of the material that we covered that week. The students have the freedom to focus on whatever they felt was import. This first post was put together by Sharieff Myles for AP Environmental Science.
Last week in our environmental science class we discussed how to produce energy and the many methods commonly used around the world and the benefits and drawbacks of using these energy sources. BELOW IS AN OVERVIEW.
- Renewable energy can be explained as energy that comes from natural resources such as sunlight, wind, tides, and geothermal heat, which are renewable or naturally replenished.- Solar energy: Energy from the sun that is converted into thermal or electrical energy which typically calls for solar panels to be placed on the roof of your home to capture natural sunlight thus using the energy directly from the sun. (Active Vs. Passive Solar energy)- Wind energy: Before the electrical grid reached rural areas of the United States, windmills spread widely across the US. Today we use the same idea but with more advanced technology known as a wind turbine which captures the moving wind and converts it into electricity. The most commonly used form of renewable energy.- Tidal Energy (Moon Power): This form of energy uses underwater turbines that capture water tides and convert the moving tides in to electrical power. Very similar to wind energy,but uses tides in place of wind.- Geothermal Heat: Geothermal energy does not come from the Sun. Geothermal energy is heat that comes from the natural radioactive decay of elements deep within Earth. Energy produced by the internal heat of the earth; geothermal heat sources include: hydrothermal convective systems; pressurized water reservoirs; hot dry rocks; manual gradients; and magma. Geothermal energy can be used directly for heating or to produce electric power.
- Nonrenewable energy: Materials or services from the environment that are not replaced or replenished by natural processes at a rate comparable to our use of the resource; a resource depleted or exhausted by use.(Fossils fuels and nuclear energy)- Petroleum Oil: Oil That is extracted from the ground is crude oil, when oil is heated different compounds come into existence due to the changes in temperature. Products from oil include: Asphalt & tar, Gasoline, Diesel, Kerosene, plastics, pharmaceuticals, lubricants,cleaners etc.Advantages: Easy to transport and use, burns cleaner than coal, produces 85%as much carbon dioxide as coal, energy dense.Disadvantages: Contains sulfur, mercury, lead & arsenic, oil leaks during drillingor transfer.(ANWR- Alaskan oil reserve, illegal to dig here)Peak Oil: The max amount oil that will ever be produced, oil then decreases drastically thereafter.