energy Flashcards
(21 cards)
the law of conservation of energy states that
enrgy can’t be created or destroyed just transeferred into another objet or form
what is power
every energy that is converted each second
what are the different enrgy stores
geeks lunch grvaitation potentional energy elastic potentional enrgy electrostatic enrgy kinetic enrgy
what are closed systems
when neither matter or energu can leave or eneter the system .
what is the type of energy that moves
kinetic energy
greater the mass the _ kinetic enrgy s being transferred
more
when an object falls what are its enrgy stores
gpe then kinetic enrgy
how can you reduce the amount of friction
lubricate the object
add oil or liquids
how cna you insulatie a house
loft insulation reducing convection , double glazed windows , cavity walls
how can you improve effiency
use led lights
you can reduice the amount of imputed energy
what is conduction
how heat erngy moves through solid materials. it is where vibrating particles transfer enrgy to neighbouring particles
what is convention
how heat energy moves through liquid and gases
what is convention
how heat energy moves through liquid and gases . it is where energy particles move away from hottter to coooler regions
what are non-reneable resources
they will run out one day . they caan’t be made as we use them
3 main non-renewable enrgy
coal , oil , natural gas
types of enrgu that are in power stations
thermal enrgy water turned into high pressure steam steam turn a turbine turbine lincked in with a genertation elctrical energy
negatives onf non-renewable enrgy
they release air pollutants into the world. carbon dioxide and sulfur dioxide and they are greehouse gases that can cause global warming
what are renwable energy resources
they will never run out . the energy can be renewed as it is used
types of renewable enrgy resources
the sun wind water waves hydro-electric bio-fuel tides geothermal
advaantages of non- renwable enrgy
easy to get from the earth
easy to trnapsort to power stations
easy to burn
disadvantage of renweba
resources are not dependable 24/7
resources depend on the loction on tbe earth
