PROCESSES

• UPTHRUST

  pressure exert force on bottom

  result= weight of fluid displaced
• TERMINAL VELOCITY

  weight= more than air resistance

  result= acceleration

  velocity/ resistance increase

  until it equals weight
• FLUID PRESSURE

  force exert to surface in contact with fluid 90
• LIQUID PRESSURE

  weight above object, molecules collide
• THINK DISTANCE

  how far travel in reaction time
• BREAKING DISTANCE

  distance to stop whilst breaking
• MICROPHONE

  sound hit diaphragm

  coil move in permanent field

  generate current

  frequency/ amplitude detirmine current
• LOUDSPEAKER

  AC flow in coil= field

  interact with permanent field

  exert force, coil move back/ forth

  alternate field vibrate
• HORSESHOE MAGNET

  rail on magnet, bar on top

  generate force, bar rolls
• MOTOR

  force act on both sides of coil

  act up/ down, rotate

  split comutator, positive to negative, every half turn

  change polarity/ field
• GENERATOR EFFECT

  magnet in coil/ wire in field move opposite direction

  change PD= AC
• ALTERNATOR

  rotating coil, induce current every half turn

  slip/ brush stop swap
• DYNAMO

  rotate coil, induce current every half turn

  split comutator swap to be same direction
• TRANSFORMER THEORY

  volt drives AC in coil

  produce field, iron increase strength

  change field, change PD in second coil

  produce AC in external
• SPACE NAMES

  1. nebula
  2. protostar
  3. main sequence star
  4. red giant- white/ black dwarf
  5. super red giant- supernova, black hole/ neutron star
• NEBULA

  dust gas cloud
• PROTOSTAR

  gravity pull nebula

  high temperature

  fusion to form helium

  release energy, core= hot
• MAIN SEQUENCE STAR

  stable period, outward pressure

  expand, pulled in
• RED GIANT

  hydrogen run out, swells

  surface cools

  fusion helium
• WHITE/ BLACK DWARF

  white- sun unstable, eject dust gas

  black- cools, emit less, forms energy
• RED SUPER GIANT

  if bigger than star

  surface cools

  fusion helium
• SUPER NOVA

  glow, fusion/ expand/ contract

  forms elements, eject into planets
• BLAKC HOLE

  super nova explode, leave dense core
• NEUTRON STAR

  if normal size, not black hole
• PLANET ORBIT

  const direction/ acceleration/ velocity

  due to gravity
• BIG BANG

  red shift- increased distance between galaxy= increased shift

  all matter in one place, dense/ hot, explode= red shift
• EVIDENCE

  universe- dark matter/ energy, pulls gravity

  matter doesnt emit electromag

  energy, acceleration expands universe