physics deck x

• Kinetic Energy


  The energy of motion, or the energy an object has due to its motion
• Potential Energy


  The stored energy of an object or system, often due to its position or state
• Energy Conversion


  The process of changing energy from one form to another, without creating or destroying energy
• What is the definition of energy in the context of energy stores?


  Energy is stored in the different energy stores of an object.
• What are the different energy stores that we need to know?

  • Kinetic
  • Thermal
  • Chemical
  • Gravitational Potential
  • Elastic Potential
  • Electrostatic
  • Magnetic
  • Nuclear
• What type of energy store does a moving object have?

  Kinetic energy store
• How does the thermal energy store relate to the temperature of an object?

  The hotter the object, the more energy in the thermal energy store.
• What type of energy store is associated with chemical reactions?

  Chemical energy store
• What energy store does an object raised above ground level possess?

  Gravitational potential energy store
• What type of energy store is found in stretched objects like springs and rubber bands?

  Elastic potential energy store
• What energy store is associated with charges that attract or repel each other?

  Electrostatic energy store
• What energy store is related to magnets that attract or repel each other?

  Magnetic energy store
• How is energy released from the nuclear energy store?

  Energy is released from the nucleus of an atom in nuclear reactions.
• What are the four ways energy can be transferred?

  1. Electrically
  2. Mechanically
  3. By heating
  4. By radiation
• What are bio-fuels made from?

  Bio-fuels are made from plant products or animal dung.
• How can bio-fuels be used?

  They can be burnt to produce electricity or used to run cars.
• What gas is produced when bio-fuels are burnt?

  Carbon dioxide is produced when bio-fuels are burnt.
• What do plants used to make bio-fuels do while they are growing?

  They absorb a lot of carbon dioxide while they are growing.
• What environmental impact can the production of bio-fuels have?

  Large areas of forest may be cleared to grow bio-fuels, leading to habitat loss for animals.
• What happens to animals when forests are cleared for bio-fuel production?

  Many animals lose their natural habitats.
• Can crops for bio-fuels be grown year-round?

  Yes, crops can be grown throughout the year.
• What is an advantage of bio-fuels regarding production and storage?

  Extra bio-fuels can be constantly produced and stored for when they are needed.
• How reliable are bio-fuels as an energy source?


  Bio-fuels are fairly reliable.
• What is a key characteristic of non-renewable energy sources?

  Non-renewables are not reliable.