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the physical world - Coggle Diagram
the physical world
energy= ability to do work
potential
chemical
light
heat
electrical
sound
nuclear
sources of energy
sun
fossil fuels
heat
solar panels
hydroelectricity
wind and waves
bulbs
in series
one bulb gone all bulbs gone
same current
in parallel
one blows others stay lit
current split up
volt, current, resistance
very important rule
resistance- ohms
density
density= mass divided by volume
monkeys drink vodka
speed= distance travelled divided by time taken
daddy's silly triangle
velocity
= change in direction(m) divided by time taken
acceleration
change in velocity divided by time taken
force = anything that causes an object to move or accelerate
newtons
mass x acceleration
friction = a force that opposes motion
causes heat and wear
weight
measure of the force of gravity on it
mass (kg) x 10
renewable energy
never run out
non renewable energy
will run out
sustainability
conservation of the world for future generations
calculating energy use
work = force x distance
power
work done divided by time taken
watts
ohms law
current is proportional to voltage
diode
current through in one direction only
current= flow of electrons in a wire ( amps)
conductors, insulators
voltage