An hourglass is a creation that simply uses the gravitational pull of the earth to move sand or other types of particles in an upper chamber down through a thin canal into a lower chamber. Usually they are engineered to approximate a certain length of time from when all the particles are in the top, to when all the particles are in the bottom.
You use chemical energy.
they use electrical energy!!
Kinetic energy?
thermal energy
kenetic energy
you use kinetic energy when you eat
You use chemical energy.
they use electrical energy!!
The type of energy a computer uses is electricty.
mechanical energy
Chemical energy.
thermal energy
Kinetic energy?
thermal energy
kenetic energy
I think it is kinetic energy
Electrical energy, Thermal energy