law of conservation Flashcards
(15 cards)
law of conservation of energy
- total amount of energy in a system remains constant
- can be changed from one form to another or transferred from one object to another
- Energy cannot be created or destroyed, but it can be transformed
TE = PE + KE
Total Energy = Kinetic Energy + Potential Energy
Kinetic Energy
energy of movement
Heat Energy
come from sun
Light Energy
lights up
Sound Energy
energy air has when its vibrating
Electrical Energy
uses power points
Potential Energy
stored energy
Gravitational Potential Energy
This form of energy becomes noticeable when you drop the something and its stored energy is transformed into kinetic energy.
Chemical Energy
It is energy that is stored in the bonds between atoms and molecules.
Elastic Potential Energy
stored in a stretched elastic band is released when you let go of one end (static, compressed, stretched)
Nuclear Energy
energy stored in the middle of an atom
Electrical Energy
can be stored
joules
SI Unit for energy and work
kilojoules
measure of the energy value of foods.
