energy Flashcards
what is energy?
the ability to do work
energy can cause something to happen.
what is the formular for energy?
work done= force x distance moved
what are the 6 types of energy?
kenetic energy - movement energy
potential energy- stored energy(elastic,chemical,gravitational potential energy)
light,sound,thermal,electric energy
what is energy transfer mean?
when energy from an object can be transferred to another object.
IMPORTANT ENERGY FACT
ENERGY CAN NOT BE CREATED OR DESTROYED
what is energy transformation?
when energy is converted from one form to another.
Eg: chemical energy id tranfromed into electrical energy in our stoves
what is the Law Of Conservation Of Energy?
energy can not be destroyed or created.
energy can transform from one form to another.
Eg: rock in hand= potential energy
rock falling = kinetic energy
what is power?
- power is the rate of energy tranfer or the rate of the work you are doing.
- power is the amount of energy used over the time of use
what is the circut for a computer?
electrical-ligh and sound-heat
what are the two controlled variables in a fan experiment?
fan type
fan wind setting would stay the same.
what are the units?
unit of power is energy/time
unit of power is watts is=(w)
unit of energy is jouls is =(j)
unit of time is seconds =(s)
what is Gravitational Potential Energy?
M=Mass(KG)
G=acceleration due to gravity (9.8m)
H=Hight(m)
GPE formular?
MGH
kenetic energy formular
0.5xmv^2 (halfxmassXvolocity^2)
what is endothermic and exothermic?
endothermic reaction is when heat enters an experement and exothermic is when heat gets released into the enviroment.
