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Forms and uses of energy :red_flag: :star::+1: - Coggle Diagram
Forms and uses of energy :red_flag: :star::+1:
Energy is the ability to work
Energy is from sources, like food.
Energy is neither destroyed nor created
energy can cause things to move or change in state
Forms of energy
Heat(HE)
Make things warm or hot
Can be produced by; moving or rubbing things together
Sources of heat
SUn
Eletronic appliances
Burning fuels
Wood,coal,natural gas and oiil
Light(LE)
Enables us to see
Object can be seen if give off/reflect light
To make food for plants
Electrical(EE)
Can be carried through wires
Generated at power stations
In batteries, solar cells
Can be changed to other forms of energy easily such as light, heat and sound.
Sound(SE)
Produced by vibrating objects
Requires a medium to pass through
Can travel through solid,liquid and gas
Cannot pass through in outer space(vacuum)
source of SE
fire alarm, siren, human, instrument
Type of Sound
Music
Noise
Kinetic(KE)
Energy that moving objects have
wind
moving water
The amount of KE depends on mass, speed of object
Objects with more mass have more KE
The faster an object move, the more KE it has
Object at rest has no kinetic energy
potential energy
Stored energy
gravitational potential energy(gpe)
object above the ground, hanging from something or ontop of a slope, has GPE.
depends on mass(more mass, more gpe energy) and height from the ground(higher,higher gpe)
Elastic potential(epe)
The energy an object has when stretched or compressed
The more stretched/compressed, the more elastic potential energy
Once released, EPE to KE with the object returning to its original shape
Chemical Potential Energy(CPE)
Food
released by respiration
Fuel
released by burning
Battery
released in a closed circuit
How is it converted?
During photosynthesis
Light energy changes to CPE
Battery used in a circuit
Chemical potential(CPE) to EE to LE+HE
respiration
CPE to HE+KE+other usable energy
ball falls from height
GPE to KE