Lubrication and insulation

• What are the two main methods discussed for reducing energy loss?

  Thermal insulation and lubrication
• Why is it important to reduce heat energy loss in homes?

  To keep homes warm in cold weather
• What is convection in the context of heat transfer?

  Heat transfer through liquids and gases
• How do foam seals around doors and windows help reduce heat loss?

  They prevent air from escaping the home
• What is conduction in terms of heat loss?

  Heat loss through solid materials
• Why do houses have thick walls made from low thermal conductivity materials?

  To reduce heat loss by conduction
• What are cavity walls and how do they help with insulation?

  Two layers of bricks with an air gap
• What is the issue with air gaps in cavity walls?

  They allow convection, which can cause heat loss
• How does insulating foam improve cavity wall insulation?

  It reduces convection and conduction
• What is the difference between single glazing and double glazing?

  Single has one pane; double has two
• How does double glazing reduce heat loss?

  It has an air gap that reduces conduction
• What is friction in the context of energy transfer?

  Resistance when moving over a solid or fluid
• Why is reducing friction important for energy efficiency?

  It prevents energy loss and overheating
• How does adding oil to bicycle parts help?

  It reduces friction, making cycling easier
• How does streamlining vehicles like cars and planes help with energy efficiency?

  It reduces air resistance and fuel usage
• Why is thermal insulation important in buildings?

  It helps maintain indoor temperature
• What role does lubrication play in energy transfer?

  It reduces friction and improves efficiency
• How does energy efficiency relate to transportation?

  It reduces fuel consumption and costs
• What is the effect of air resistance on fuel consumption?

  It increases fuel usage in vehicles
• Why is sealing homes important for energy conservation?

  It prevents heat loss and improves efficiency