Quoting in the book Energy Around Me published by the Ministry of Education and Culture, energy is an ability or effort to do something. The types of energy and examples of their use are as follows.
1. Energy from petroleum
Kerosene: stove fuel
Gasoline: vehicle fuel, such as motorcycles and cars
Solar: fuel for cars and engines used in the production process.
2. Energy from non-petroleum
Sunlight: drying clothes
Wind: moves fishermen’s sailboats and windmills
Water: the main energy source in hydropower
Bio-fuel, which comes from oil palm, jatropha, and sunflower plants, as well as animal waste.
Meanwhile, in the book Smart Arif for Grade 4 Elementary School by Christiana Umi, it is stated that energy sources are divided into two categories, including:
Renewable energy sources, namely energy sources that will not run out even though they are used continuously.
Non-renewable energy sources are energy sources that can run out and take hundreds of years to be used again.
The following discussion will briefly describe non-renewable energy sources. This energy source must be considered in its use so as not to experience scarcity.
Non-Renewable Energy Source
Quoting in the book Energy Conversion Machine by Astu Pudjanarsa and Djati Nursuhud, non-renewable energy sources are energy sources that can run out, are difficult to obtain in a short time, and require a long time to process.
Non-renewable energy sources are generally conventional energy sources, which are in the form of mining energy or fossil energy, which comes from the bowels of the earth.
These fossils settle and get pressure from the earth’s plates, so they will naturally dissolve and turn into petroleum, which is then used by humans for their needs.
Coal is formed from the remains of plants that are buried at the bottom of the swamp, approximately millions of years. At first the plant remains turn into a solid material, called peat due to pressure and heating from the top layer.
After going through this process, peat will turn into coal, which is a sedimentary rock that contains carbon, hydrogen, and oxygen.
Nuclear is an energy source that contains a high risk of radiation hazard. This energy source is another source of energy from mining, which can be cultivated through fission and fusion processes.
Besides being dangerous and deadly, nuclear management also costs quite a lot, so the investment capital for countries that want to cultivate nuclear must be of high value.