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Stars.
Natural engines that generate heat and light energy are called stars, as a result of mass and gravity they start thermonuclear reactions (fusion), which heat the cores of stars to millions of degrees. These are the source of all energy in the universe after the big bang.
Machines that convert this heat energy into usable work are numerous. Simple machines like sails, windmills and waterwheels use the inherent motion of convective currents or gravity to move other machines by mechanical means. Other machines such as turbines (wind, steam or water) use this motive force to generate electricity by rotating a magnetic field through another stationary magnetic field, in a machine called a generator or an alternator.
Note: geothermal energy was created by accretion, a frictional heat release caused by the striking of large bodies into the Earth. Because all material in the universe was created by the fusion engines in stars and the eventual destruction of large stars, nuclear radiation (from radioisotopes) was along with this geothermal energy a byproduct of the basic fusion generating the energy inside the stars.
*Fossil fuels were mostly vegetation, which had converted solar energy and carbon dioxide into sugars and oxygen, by photosynthesis, which later died, compacted and transformed into hydrocarbons, which release their energy when burned.
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What energy sources are used for modern machines such as cars and sewing machines?
idk u guess
How you will derive energy to run your machines where there are no fossil fuels?
From renewable sources of energy like solar, wind, hydro, geothermal and many others.
How do machines create energy?
It is wrong to say machines create energy. Machines have to be given energy to make them effective. This could be electric energy, solid liquid or gaseous energy, thermal energy, mechanical energy (like a flywheel for example). It may be possible to design machines which will search for their energy by themselves, some robots may already have achieved. Remember we humans are also machines, but we get our energy from digesting food.
Why are wind and wave energy machines designed to make electricity?
no
What energy sources make up the world's energy supply?
Oil and coal make up the world's energy supply.
What are the ways to make sure there will be enough energy for the future?
In the most general terms, that would be: (1) Find new energy sources or make better use of the existing energy sources; and (2) Use less energy.
Is a windmills a nonrenewable resources or a renewable sources?
It would be naïve to say that there is a completely renewable source of energy. The sun, for example, which is the source of all energy on Earth, will form a Red Giant in a few billion years time, and will produce far less energy than it had in the past. Additionally, although wind (which relies on the sun) is renewable per say, machines to make use of wind energy, such as wind turbines, require maintenance et cetera and are in that sense, not *completely* renewable. However, for our purposes, and especially in contrast to Fossil fuels, the Sun, the wind, the tides et cetera are renewable sources of energy. Windmills are machines which convert the wind's energy into another form of energy. They, themselves, are not "renewable *sources," rather they can make use of a 'renewable' source, 'the wind,' to transform kinetic into potential energy.
What two ways to make sure there will be enough energy for the future?
In the most general terms, that would be: (1) Find new energy sources or make better use of the existing energy sources; and (2) Use less energy.
What are two ways to make sure there will be enough energy for the future?
In the most general terms, that would be: (1) Find new energy sources or make better use of the existing energy sources; and (2) Use less energy.
What energy sources make up the majority of the world energy supply?
Oil and Coal
How Renewable energy sources help in avoiding environmental pollution?
they use natural things like wind and waves and rivers to power the machines
What are the five steps to expirements?
i want how to make sources of energy
