We run out of means to convert it.
Coal is stored potential energy, if we use it all and the resulting heat energy escapes into space, we've lost that energy.
World's water evaporates, no hydro power.
The energy we use comes from sources like the sun, wind, and fossil fuels. It cannot be created or destroyed, but can be converted from one form to another.
It is changed into a different form of energy as it cannot be destroyed (First law of thermodynamics) usually kinetic energy of the molecules
If you ment to say "What CANNOT be created or destroyed but can be changed from one to another" than you are looking for matter and energy. Energy cannot be created or destroyed, it can only change form. for example, the sun shines light on to a corn plant, which powers photosynthesis. this is a transfer from radiation energy to chemical energy, stored in the cells of the corn. when you eat this corn, and use that energy to jump up and down, that is a transfer of chemical energy to kinetic energy.Mass can also (at least in theory) be converted into energy in accordence with E=Mc2 with E=energy, M=mass, and c=the speed of light
Yes, coal is a non-renewable energy source. We use it faster than it is produced
Energy can be wasted when it is used inefficiently, such as leaving lights or electronics on when not in use, or by using outdated and inefficient appliances. This leads to a loss of usable energy in the form of heat or other forms of energy that aren't useful for the intended purpose.
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.
It is changed into a different form of energy as it cannot be destroyed (First law of thermodynamics) usually kinetic energy of the molecules
The energy we use comes from sources like the sun, wind, and fossil fuels. It cannot be created or destroyed, but can be converted from one form to another.
You cannot use the chemical energy of water as a source of energy. It takes more energy to use it than you get out of it.
Cells, like humans, cannot generate energy without locating a source in their environment.
First law of thermodynamics: energy cannot be created nor destroyed.
There are many different laws of conservation, but they are essentially the same. For this example I will use energy. The laws of conservation of energy say that energy in = energy out. This is to say that energy cannot be destroyed or created.
A computers energy source is electricity. When using a computer plugged in or not it is drawing electricity from the battery or from a plug which is connected into the PC and a wall outlet. When there is no electricity the computer cannot function.
If an article does not I have an author listed, you cannot use it as a source
Glucose is the energy source for the body. But it cannot use it in that form, so it converts it to ATP for use in metabolism.
glucose is the primary source of energy. ATP's cannot store a lot of energy so the plats use glucose (C6H12O6) to store their energy.
Glucose is the only energy source that the brain can use.