False
The sun and then the primary producers which are able to convert the energy from the sun into a form that can be used to the rest of the creatures on the energy pyramid
The energy produced by the engine is mostly used to power the car, but due to an imperfect design, some energy still remains in the form of heat.
Water is an excellent fuel for internal combustion engine, But, It takes A LOT! of energy to make it to the form to burn
You cannot create energy. You can simply convert energy from one form to another, for example potential energy to kinetic energy - dropping a ball, when the ball is released it has potential energy which is converted into kinetic energy as it falls (plus some heat energy). The total energy of a system has to remain constant, this principle, the conservation of energy, was first postulated in the early 19th century, and applies to any isolated system.
False
Least what? Anyway, heat energy is in a way the least useful form of energy, because you can normally convert any other energy to heat energy, but if you have heat energy, you can no longer convert all of it back to other forms of energy.
No. However, you can (and will) convert high-value energy to low-value energy. In other words, energy gets "used up" in the sense that it gets converted into a form that is no longer useful.
Thermal energy is the most randomized form of energy because it manifests as random motion of particles in a substance. It is difficult to convert thermal energy into useful work because it tends to disperse and equalize, making it challenging to harness and direct for productive purposes.
The energy that is not useful is called waste energy. It is the energy that is not harnessed or converted into a form that can be utilized for work or other useful purposes.
I can convert various forms of energy into electrical energy.
heat energy
Actually it is - very useful.
Currently, gold is not useful in any form of energy production.
electricity can be useful in alot of things. You will not imagine how much you use electricity throughout the day. You mostly use it for light. right now you are using electricity while you are reading this. You use it when your watching TV, or playing video games, or using an air conditioning machine. that is how electricity is useful.
electricity
The least usable form of energy is thermal energy, such as low-temperature heat, because it is difficult to harness efficiently and convert into other forms of energy. Thermal energy is often dispersed and not easily concentrated or converted into useful work.