Improving

• Why is it important to improve the efficiency of processes?


  It helps reduce the amount of energy needed for them
• What is an example of a process that requires the same output?


  Boiling water
• How can we analyze the efficiency equation to improve efficiency?


  By increasing the numerator or decreasing the denominator
• What does the total useful output energy equal?


  It equals the total input energy minus the wasted energy
• What happens if we decrease the wasted energy in a process?

  We can increase the overall efficiency
• How can we reduce the input energy required to complete a process?


  By reducing the wasted energy
• In lifting a box, how does using a crane improve efficiency compared to lifting it manually?


  A crane only lifts the box, reducing the input energy
• What is the effect of reducing resistive forces on energy efficiency?


  It leads to less energy lost as heat
• What is a common cause of wasted energy in processes?

  Heat loss
• How does lubricating an engine reduce wasted energy?


  It reduces friction within the moving parts
• What is the purpose of streamlining the body of a car?


  To reduce air resistance
• How do low friction wheels contribute to energy efficiency?


  They reduce heat loss by rolling instead of dragging
• Why might driving more slowly waste energy?

  It increases air resistance
• How does reducing wasted energy affect the overall efficiency of a process?


  It increases the useful output, making the process more efficient
• What methods can be used to reduce wasted energy?

  • Lubricate moving parts to reduce friction
  • Streamline shapes to reduce air resistance
  • Use low friction wheels
  • Insulate homes
• What are the benefits of using a Smart Learning platform for revision?


  • Covers the whole specification
  • Interactive quizzes
  • Easy to follow videos
  • Motivational AI tutor support