energy Flashcards
define energy
the ability to do work
name the units in which energy is measured
joules
explain the difference between kinetic and potential energy
kinectic is moving energy where potential is stored energy
identify examples of potential energy
a hill, a not moving stone and a not moving tree
example of a energy transformations
turning on a flashlight results in the energy chemical energy from the battery changing into light energy
draw simple energy flow diagrams
do it now
explain that energy is not created or destroyed, only transferred or transformed
explain that energy is not created or destroyed, only transferred or transformed
explain the difference between useful and wasted energy
useful energy is the energy that serves a purpose, wasted energy is the energy that is lost and doesn’t contribute to any useful activity.
draw simple Sankey diagrams to represent energy flow involving useful and wasted energy
do it now
define and calculate energy efficiency
(Should Do)
you caulate by getting the total input and out put
Define total energy
Total energy is the sum of all forms of energy in a sytem
what does the term ‘Energy Efficiency’ mean?
it means how effitly a sytem is useing it energy based of input and out put
what is convection
Convection is a process of heat transfer that occurs through the movement of fluids, such as liquids or gases.
Are heat and temperature the same concept?
no temputure can be used to measure the coldness of something were heat is just how hot that object is
What are the 3 types of heat transfer?
conduction,convection,radition
