Energy transfers

What is energy measured in?

Joules (J)

What is energy stored in?

kinetic, elastic, electrical, chemical, thermal,nuclear etc.

What does kinetic energy do?

move objects

what does elastic energy do?

strech/ deform objects

what does thermal energy do?

transfers heat to objects (warms stuff)

what does chemical energy do?

holds energy to release elsewhere

what does nuclear energy do?

release energy through nuclear reactions

what does magnetic energy do?

magetic feilds which attracts particles

what does electrostatic energy do?

creates forces between charged particles

what does gravitational potential energy do?

the energy a object has due to being lifted up

How many ways can energy be transferred?

4

Mechanical energy transfer?

transfers energy over a distance with FORCE

Heat energy transfer?

when heat moves from objects due to temperature diffrence

Electrical energy tranfer?

when electrons move through conductors

Radiation energy transfer?

transfer of heat from a hot to cold place by infrared radiation

What is the conversation of energy?

energy can not be created or destroyed, it only transfers from one thing to another

What is a sankey diagram?

used to represent energy transfer. shows input + output store. BIGGER ARROW = MORE ENERGY

how is wasted energy usually transferred?

as thermal energy to the surroundings

What is a electrical conductor?

a meterial that allows electrical currents to pass through. ALL METALS ARE ELECTRICAL CONDUCTORS

What is a electrical insulator?

a material that DOSENT allow electrical currents to pass. PLASTIC and GLASS are electrical insulators

What charge moves freely in metals?

electrons

charge of electrons?

-

charge of protons?

+

charge of neutrons?

0