Energy

• What is the definition of power?

  Rate of transfer of energy
• What type of energy is transferred when a force moves through a distance?

  Mechanical transfer
• What is the energy transferred when a charge moves?

  Electrical transfer
• What is the energy transferred by electromagnetic wave?

  Radiation transfer
• When an object is heated the energy transfer is a..?

  Heat transfer
• 4 ways energy is transferred?

  Mechanical, Electrical, Radiation and heat
• What is kinetic energy?

  Energy stored in objects that move
• What is chemical energy?

  energy stored in chemical bonds
• A battery is a store of ________ energy?

  Chemical
• Food is a store of ________ energy?

  Chemical
• A moving object is a store of _______ energy?

  Kinetic
• What is gravitational potential energy?

  Energy stored in an object that is lifted/raised by height
• What is elastic potential energy?

  Energy stored when an object is stretched or squashed
• A rock at the top of a hill is a store of ___________ _________ energy?

  gravitational potential
• A compressed spring is a store of _______ _________ energy?

  elastic potential
• An inflated ballon is a store of _______ ________ energy?

  elastic potential
• What is an internal energy store?

  energy stored in the movement of particles
• The internal energy store can be changed by...?

  heating or cooling
• Energy stored in the nuclei of atoms is in the _______ store...?

  Nuclear
• Process when nuclei of atoms fuse together?

  Fusion
• Process when nucleus of an atom splits?

  Fission
• What is the magnetic energy store?

  energy stored in magnets that are attracting or repelling
• Name 2 non-renewable energy resources...

  Fossil fuels, nuclear fuel
• Advantages of fossil fuels as a resource?

  reliable, cheap
• What is a reliable energy source?

  one that can produce energy all the time
• Disadvantages of fossil fuels?

  releasing CO2 + methane causes global warming, pollution
• Advantages of nuclear fuel?

  No CO2 produced, reliable
• Disadvantages of nuclear fuel?

  expensive, radioactive waste produced
• 7 renewable energy resources...

  Biofuel, geothermal, Hydroelectricity, tidal, wave, wind and solar
• Advantages of biofuels

  reliable, carbon neutral
• Disadvantages of biofuels

  can damage ecosystems, reduce crops grown
• Advantages of wind power

  No CO2 produced, no pollution
• Disadvantages of wind power

  expensive to construct/manufacture
• Advantages of hydroelectricity

  No CO2 produced, no pollution
• Disadvantages of hydroelectricity

  loss of habitats, block rivers preventing fish migration
• Advantages of geothermal energy

  doesn't damage ecosystems, reliable
• Disadvantages of geothermal energy

  high cost, can lead to global warming
• Advantages of tidal power

  No CO2 produced, no pollution
• Disadvantages of tidal power

  unreliable (tides vary), spoils the view, alters habitats
• Advantages of wave power

  No CO2 produced, no pollution