3.4.7

• What are some examples of a labour-saving device that rates energy efficiency?

  Air fryer, Washing machine and dishwasher
• How do cars contribute to energy efficiency?


  Through tax on emissions
• What home appliance can be insulated to improve energy efficiency?

  Boiler
• What is an example of energy-efficient transport?

  Electric cars
• What are some of the renewable energy sources?


  • Wind
  • Solar
• What clean technologies are developed for fossil fuels?

  • Carbon capture
  • Efficient engines (e.g., 'Blue' diesel)
• How many countries first signed the Kyoto Protocol?


  192 countries
• What decision did Bill Clinton make regarding the Kyoto Protocol?

  USA would not join
• What is the emission cut target for most of Europe?

  1. 10%
• What is the top carbon sink initiative mentioned?

  Forest planting
• What is low-til farming aimed at?

  Soil conservation
• What does carbon trading allow?

  Reduction in far more emissions than required
• Which greenhouse gas does the agreement aim to reduce?

  Carbon
• What percentage of world emissions does China produce?

  14.8%
• What is Agenda 21?

  • Non-binding action plan
  • United Nations initiative
  • Focus on sustainable development
  • Result of the Earth Summit in 1992
• What was COP21?

  • Held in Paris, France in 2015
  • 171 countries signed the Paris Agreement
  • Aim to limit global warming below 2 degrees
• What happened when Trump became president regarding the Paris Agreement?

  He pulled out of the agreement
• What was China's response to the Paris Agreement?

  Increased its support
• What is cap and trade?

  • Businesses pay for emissions
  • Cap gets tighter and more expensive
  • Needs global agreement to be effective
• What is the efficiency improvement of new buildings in Vaxjo, Sweden?

  30% more efficient
• What type of buses are used in London?

  Electric or hydrogen buses
• What is engine required for taxis in London?

  electric
• What does the biogas plant in Dorset use to generate electricity?

  Biomass and waste food
• What is the REDD scheme?

  • UN initiative
  • Reduces emissions from deforestation
  • Assists developing countries like Indonesia and Nigeria
• What does the Indian firm do with carbon capture?

  Turns CO2 into baking soda
• What is the electrified road in Sweden designed to do?

  • First electrified road
  • Reduces carbon emissions by up to 90%
  • Uses a movable arm for charging
• What is the cost of the electrified road per kilometer?

  1 million Euros
• What is China's Great Green Wall aimed at?

  • Prevent dust from Gobi Desert
  • Protect cities from dust storms
  • Took over 50 years to complete
• What is an energy crisis?

  When demand exceeds supply
• What is gasification?

  • Heating biomass or coal with little oxygen
  • Produces 'syngass' (carbon monoxide and hydrogen)
  • Can create energy with low emissions
• What are the alternative transport technologies mentioned?

  • Electric fuels
  • Biofuels
  • Hydrogen
• What are the types of carbon capture and sequestration?

  • Ocean sequestration
  • Geological sequestration
  • Terrestrial sequestration
• What are the sustainability aspects of renewable energy sources?

  • 80% of global population are net importers
  • Renewable energy is cheaper
  • Creates more jobs
• How much did the cost of solar energy drop between 2010-2020?

  85%
• What percentage of people breathe air above quality limits?

  99%
• What are the positives and negatives of renewable energy sources?

  Positives:

  • Great potential
  • Constant supply of energy
  • Creates jobs

  
  

  Negatives:

  • Expensive
  • Difficult to store
• How much was spent on subsidizing the fossil fuels industry in 2022?

  7 trillion
• What are the challenges of different renewable energy sources?

  • Wind: Expensive, difficult to store
  • HEP: Large scale, expensive
  • Solar: Needs sun, difficult to store
  • Geothermal: Limited access
  • Waves/tidal: Near coast, technology developing
  • Nuclear: Risk of disasters, hard to find uranium
• What is needed to reach net zero by 2050?

  Investment in renewables
• what is Ocean sequestration?


  Carbon stored in the ocean through direct injection or fertilasation