You notice it as time passing.
energy
It can be converted to thermal energy, but you can't get more energy out than you put in. The two different forms of energy must be equivalent, unless there is another source of thermal energy
Electricity , as a secondary source of energy, is easy to transport and easy to be converted at end energy use point to energy the form needed (as in lighting, heating, industry, transportation, etc.). Electricity by itself as secondary energy source is environmentally clean secondary energy source. Pollution caused by its production depends on the type of the used primary source (coal, oil, gas, nuclear energy, wind, etc.) However, electricity is usually produced in thermal power plants at efficiency less than 50%. So, it is expensive high grade secondary energy source.
The source of solar energy is the sun. The sun contains hydrogen, which by fusion, is converted to helium. The fusion reaction gives off solar energy. See related link.
it moves to a higher energy level.
The carbohydrates are the main source of energy from the food you eat, becausethey are most easily converted to useable energy. Fats are the second energy source used.Proteins are the third and most difficult source to be converted to energy.
energy
It can be converted to thermal energy, but you can't get more energy out than you put in. The two different forms of energy must be equivalent, unless there is another source of thermal energy
Oil has a reserve of chemical energy. If we burn it, that gets converted to heat energy.
Light energy is obtained by sun. This energy is converted into chemical energy.
A secondary
It's true that energy is never destroyed-- whan you use up a source of energy, you simply convert it to another form. When gas is burned in a car, for example, it turns from chemical energy to thermal and kinetic energy, which is then converted into sound, and eventually thermal energy in the form of friction.
Uranium is a source of energy - converted to electric or thermal energy.
Well, electricity energy is an energy source. Mechanical energy is the energy of potential energy and kinetic energy. A machine that runs on electricity and uses mechanical energy as a result is the conversion. When energy is converted, a small part is converted into thermal energy, or heat energy. Electricity is also a type of potential energy, because it is stored energy.
Electrical Pulse energy is already electrical energy. It can be converted to different levels (as in different voltage). It can be converted from pulse to a stable source. But non the less it will still be electrical energy.
Oranges are packed with sugars which can be converted to energy by the process of digestion. They are also packed with acids which can be made the source of energy by simpler chemical processes.
Yes, it uses mechanical energy to convert the gases to high pressures in the compressor. The compressor gets energy from electrical source, then that source is converted to mechanical energy, then to hydraulic energy.