Work, Energy and Power Flashcards
What is energy?
The ability to do work
What is work?
The energy given to a body by a force moving it through a displacement in the same direction as the applied force
What are the forms of energy?
-Potential Energy
-Kinetic Energy
-Heat Energy
-Sound Energy
-Light Energy
-Nuclear Energy
-Chemical Energy
State the law of conservation of energy.
Energy cannot be created or destroyed, only converted from one form to another
What is kinetic energy?
Energy due to movement
What is potential energy?
Energy due to position or conformation
What is sound energy?
The transfer of energy from a vibrating source in the form of sound waves and particles in the medium through which the waves travel
What is heat energy?
The transfer of energy due to temperature difference
What is nuclear energy?
Energy due to the fission and fusion of nuclei
What is chemical energy?
Energy stored between the bonds of an atom, released when the bonds are broken
State an example of potential to kinetic energy.
A rollercoaster at the top of the track
State an example of kinetic to potential energy.
A tennis ball hitting the racket
State an example of chemical to electrical energy.
A battery
State an example of kinetic to sound energy.
Vocal chords
State an example of kinetic to heat energy.
Hailstone (it falls and melts)
