energialähteide

Energialähteide refers to the sources from which we obtain energy. These sources are broadly categorized into renewable and non-renewable types.

Non-renewable energy sources are finite resources that are consumed much faster than they are naturally replenished. The most common examples include fossil fuels such as coal, oil, and natural gas. Nuclear energy, derived from the fission of radioactive elements like uranium, is also considered non-renewable due to the limited supply of these materials. The extraction and combustion of non-renewable sources often have significant environmental impacts, including air pollution and greenhouse gas emissions.

Renewable energy sources, on the other hand, are naturally replenished on a human timescale. Solar energy harnesses the power of the sun, while wind energy utilizes the kinetic energy of moving air. Hydropower generates electricity from the flow of water, and geothermal energy taps into the heat from the Earth's interior. Biomass energy comes from organic matter, such as plants and animal waste. These sources are generally considered more sustainable and have a lower environmental footprint compared to non-renewable options. The global shift towards renewable energy is driven by concerns about climate change and the desire for energy security.