When this near-surface heat is transferred to water, a usable form of geother-energy is created. Geothermal energy is called a renewable energy source because the water is replenished by rainfall, and the heat is continuously produced by the earth. 2.he double-layered core is made up of very hot molten iron surrounding a solid iron center. Estimates of the temperature of the core range from 5,000 to 11,000 degrees Fahrenheit (F). Heat is continuously produced within the earth by the slow decay of radioactive particles that is natural in all rocks.
A galvanometer is a type of sensitive ammeter: an instrument for detecting electric current. It is an analog electromechanical actuator that produces a rotary deflection of some type of pointer in response to electric current through its coil in a magnetic field.
Answers. Best Answer: Similar: they both use the connection between electricity and magnetism to produce a torque due to applied electrical current on a mechanical body. Different: Galvanometers have the torque oppose the torque due to a torsional spring, such that the needle is held stationary for measuring current. Motors encourage continuous rotation of the rotor and shaft, which is enhanced with the addition of the commutator for periodic swapping of the direction of current flow.