power

• power - the rate of change in energy
• watt (W) - unit for measuring power
• devices that can transform energies into other forms in a shorter period of time has more power
• electrical power - the rate at which electrical energy is used by a load

  • eg. appliances (washing machines, TV)
• phantom load - electrical energy devices use when it is turned off

  • eg. stand-by mode on TVs
• kilowatt-hour (kWh) - a larger unit of energy
• smart meter - an electrical energy meter that measures how energy use changes in a building over the course of the day; the power company charges a fixed amount of money for every kWh of electrical energy used
• renewable energy source - an energy source that is available on a continuous basis

  • eg. sunlight, wind, river flow, tides + waves, geothermal sources, biomass
  • provide sustaining options for generating electrical energy
• nonrenewable energy source - an energy source that is non-replaceable in a human lifetime

  • eg. coal, natural gas, uranium (nuclear reactions)
• sustainable energy system - a sustainable way of perceiving, producing, and using energy

  • ensures that the extraction, production, and use of energy have limited impact on environmental/human health
  • less reliance on nonrenewable sources
  • ensures the availability of renewable + reliable energy sources for current + future generations
  • provide access to affordable energy for Earth's entire population
• First Peoples EBM

  • respect + responsibility - make respectful decisions of the natural world + responsible use of resources
  • intergenerational knowledge - listen to elders + share knowledge between generations
  • balance + interconnectedness - balance ensures future generations are considered, interconnectedness takes many relationships with an ecosystem into consideration
  • giving + receiving - give thanks for natural resources recognizes their value, benefits of resources are share in communities