topic 9 - consuming energy resources (energy efficiency) Flashcards
energy efficiency
if something is energy efficient, it does the same job using less energy
energy conservation
conserving energy is about changing our behaviour as consumers
carbon footprint
measurement of all the greenhouse gases an individual produces expressed as tonnes (or kg) of carbon dioxide equivalent
how can we reduce the carbon footprint at home?
insulation, lightbulbs, lights, modern boilers, solar panels
how can insulation reduce the carbon footprint
by insulating walls, roofs and floors, less energy is required to heat homes
how can light bulbs reduce the carbon footprint
using energy-efficient bulbs use less energy than the standard bulb
how can lights reduce the carbon footprint
switching off lights when not in use reduces the energy usage
how can modern boilers reduce the carbon footprint
new boilers are more efficient than older models, so will use less energy in homes
how can solar panels reduce the carbon footprint
can be fitted to the roofs of homes providing renewable, low-carbon energy
congestion charge
19% in saving co2 emissions and 20% fuel savings - £12.50.
santander bikes
widely used, cheap way to get around London
easily accessible and encourages physical exercise, environmentally sustainable
London buses
been hybrid since 2012
quieter, more fuel-efficient and cleaner than diesel buses. Reduced emissions by 30-40%
hybrid cars
combine diesel + electrical power to increase efficiency
use electricity when possible, and recharge their batteries using diesel power
hydrogen fuel cell cars
use hydrogen fuel instead of conventional fuels.
pros of hydrogen fuel cell cars
greenest power source
quiet
no air pollution
no harmful fumes
no greenhouse gas emissions
