Energy transfers

• What is conduction?

  Heat transfer from particles colliding due to their vibration.
• What is radiation?

  Heat energy transferred by electromagnetic waves.
• What is meant by the conservation of energy?

  Energy cannot be created or destroyed, only transformed from one form to another
• How can energy be transferred within a system?

  Energy can be transferred between different energy stores, such as gravitational potential and kinetic energy
• What happens when energy is dissipated?

  Energy is transformed into thermal energy, often due to friction or other resistive forces
• What energy transfer occurs when a pendulum swings?

  Gravitational potential energy is converted to kinetic energy and vice versa
• What energy store is present at the start of a bungee jump?

  Gravitational potential energy
• What happens to the kinetic energy store as the bungee jumper falls?

  It increases until the rope starts to tighten
• What happens to the kinetic energy when the bungee rope is fully extended?

  The kinetic energy store becomes zero
• What energy store is at its maximum when the bungee rope is fully extended?

  Elastic potential energy
• During the ascent of a bungee jumper, what happens to the energy?

  Energy transfers from the kinetic energy store back to the gravitational potential energy store
• What happens to the energy at the top of the ascent in a bungee jump?

  All of the energy is now in the gravitational potential energy store
• Why does the bungee jumper never return to the original position?

  Because energy is dissipated as thermal energy due to friction and stretching effects
• What causes energy dissipation during a bungee jump?

  Friction with air particles and stretching effects in the bungee rope
• What type of energy is always dissipated during the bungee jump?

  Thermal energy