Energy Flashcards
What is the equation for specific heat capacity?
change in thermal energy = mass x SHC x temp. change
What is the equation for kinetic energy?
KE = 1/2 x m x v(squared)
What is the equation for gravitational potential energy?
GPE = m x g x h
What is the relation between GPE and KE for a falling object when there is no air resistance?
energy lost from GPE store = energy gained by KE store.
What is the equation for elastic potential energy?
Elastic potential energy = 1/2 x spring constant x extension(squared)
What is conduction?
Conduction is the process where vibrating particles transfer energy to neighbouring particles.
Which state does conduction occur in?
solid
What is convection?
Convection is where energetic particles move away from hotter to cooler regions.
Which states does convection occur in?
liquids and gases
In convection currents, what happens to the density of the warm air as it cools?
The cooling air becomes more dense and sinks.
