Paper 1

• What useful energy transfers take place in a car that is acclerating?

  Chemical decreases to kinetic energy which increases
• What energy transfer is happening in a rocket at lift off?

  Chemical energy transferred to kinetic and gravitational potential energy
• The wasted energy transfers in a light bulb are:

  Electrical energy to thermal internal energy
• The law of the conservation of energy states that...

  Energy cannot be created or destroyed, only transferred.
• Which two factors determine how much energy is in an object's kinetic energy store?


  mass and velocity
• What is the equation linking energy transferred, power and time?

  P = E/t
• What is the equation for calculating efficiency from energy?

  Efficiency = useful energy output/total energy input
• What does a good conductor mean?

  Transfers thermal energy very quickly through it
• What do we call a poor conductor?

  Insulator
• What method of heat transfer occurs mainly in solids?

  Conduction
• Which solids are the best conductors of heat?

  Metals
• What is conduction?


  A type of energy transfer where energy passes through the material from one particle to the next.
• Why are liquids and gases such poor conductors of heat?


  Their particles are not fixed and touching
• The more the particles in a solid vibrate the hotter that object is
• Cavity wall insulation traps warm air by.....

  Injecting foam into the gap between walls

  
• How does loft insulation stop energy loss in the home?

  Traps hot air leaving through convection

  
• Double Glazing works because

  The second layer of glass reduces the amount of radiation that can escape the house

  
• The specific heat capacity of a substances is the energy required to...

  raise the temperature of 1kg of a substance by 1 degree Celsius
• What is the best material for the bottom of a cooking pan?

  Copper
• unit used to measure specific heat capacity

  J/ Kg°C
• What does conduction mean?


  Transfer of thermal energy by particles colliding and passing on energy
• disadvantage of fossil fuels

  Burning fossil fuels releases carbon dioxide, which contributes to global warming and climate change
• What type of energy resource is shown in the picture?

  Non-renewable

  
• Fossil Fuels are non-renewable energy resource because one day they will run out.
• A disadvantage of using wind power to generate electricity is that

  it is not reliable

  
• Uranium is a ...

  nuclear fuel

  
• What is a disadvantage of nuclear fuels?

  Disposing of waste
• What is a disadvantage of geothermal energy?


  It can only be used in certain places

  
• Advantage of renewable resources that is only applicable to tidal power

  Electricity production is available at predictable times

  
• Burning of fossil fuels release which substances that contribute to acid rain

  Sulphur Dioxide and Nitrogen Oxide
• A disadvantage of using wind power

  no wind = no electricity
• Which is not renewable?

  Uranium
• Which form of renewable energy would most likely get complaints about noise pollution?

  Wind power
• A disadvantage of Biofuels is...

  It can cause deforestation

  
• wood is a renewable fuel.

  
• How are fossil fuels used to generate electricity?

  Burned to heat water into steam to turn turbines to generate electricity

  
• What type of energy moves the blades of wind turbines?

  Kinetic energy
• What circuit component would this symbol represent?

  Voltmeter

  
• What circuit component would this symbol represent?

  Closed Switch

  
• What is this the circuit symbol for?

  battery