Physicz

• What is Kinetic energy?

  The energy of a moving object

  Example: A moving car
• What is GPE?

  The energy an object has when its raised above the ground

  Example: a book on a shelf
• What is EPE?

  The energy an elastic object has when stretched or compressed

  Example: A compressed spring
• What is Thermal Energy?

  The total kinetic and potential energies of all the particles in an object

  Example: a hot cup of tea
• What is Chemical Energy?

  The energy stored in chemical bonds

  Example: A battery
• What is Nuclear Energy?

  The energy stored in the nucleus of an atom

  Example: Uranium fuel in a nuclear reactor
• What is Magnetic Energy?

  The energy a magnetic object has when close to a magnetic field

  Example: A fridge magnet
• What is electrostatic energy?

  The energy a charged object has when held near another charged object
• What is a system?


  An object or group of objects
• What is a closed system?

  When energy cant escape or enter the system
• What is Specific Heat Capacity?

  The amount of energy needed to raise the temperature of 1kg of a substance by 1 degree celsius

  (change in thermal energy = mass x shc x temp change)
• What is power?


  The rate at which energy is transferred
• What is the law of conservation of energy?

  Energy cannot be created or destroyed

  It can dissipate (transfer to less useful stores)
• How can we reduce unwanted energy transfers?

  Lubrication

  Thermal insulation
• What does Thermal conductivity tell us?

  How quickly energy is transferred through the material via the thermal conduction
• Efficiency Equation?


  efficiency = total power output OVER total power input
• What is a renewable energy resource?

  A resource that can be replenished as it is used and will not run out
• What is a non-renewable energy resource?

  An energy resource that is finite like fossil fuels
• Give the 3 advantages of coal oil and gas?

  There is enough available currently to meet demands

  They are cheap to extract
• Give the disadvantages of coal oil and gas?

  Finite and will run out

  Release carbon dioxide, contributes to the greenhouse effect

  Releases other pollutants

  Oil spills damage aquatic environments
• Give the ad and disvantages of nuclear fission?

  No pollutant gases

  Difficult to safely dispose of

  Dangerous

  Power plants are expensive
• What part of the circuit is this?

  Ammeter

  
• What part of the circuit is this?

  Battery

  
• What part of the circuit is this?

  Cell

  
• What part of the circuit is this?

  Closed Switch

  
• What part of the circuit is this?

  Diode

  
• What part of the circuit is this?

  Fuse

  
• What part of the circuit is this?

  Lamp

  
• What part of the circuit is this?

  LDR

  
• What part of the circuit is this?

  LED

  
• What part of the circuit is this?

  Open Switch

  
• What part of the circuit is this?

  Resistor

  
• What part of the circuit is this?

  Thermistor

  
• What part of the circuit is this?

  Variable resistor

  
• What part of the circuit is this?

  Voltmeter

  
• What is an electrical current?

  The rate of flow of electrical charge