### energy:

Tidal energy
* including tidal acceleration can have effects on both the primary and satellites.
* is another recently rediscovered form of renewable energy
  - green energy
  - one of the oldest forms of energy used by humans
* type of renewable energy, a concept that is growing in popularity.

Total energy
* Most total energy depends on temperature.
* constant and is sum of electric field energy and magnetic field energy.
* is conserved if there are no non-conservative forces
  - supposed to be conserved
  - the sum of kinetic energy and potential energy
* uses for growth.

Ultrasonic energy
* causes alternation patterns of low and high-pressure phases.
* is non-destructive to the stencil or screen
  - required to produce an echo
  - safer than lasers
  - used in clinical therapy as a deep heating agent
* is used to expand and collapse tiny bubbles in a liquid
  - fractionate or burst the fat cells
  - improve the structure of materials in metallurgy
* uses sound waves that turn electrical energy into mechanical motion.

Useful energy
* Much useful energy is wasted by friction in the form of heat.
* is the energy which is an input in an end-use application.

### energy:

Wind energy
* Most wind energy comes from power sources
* Most wind energy comes from ultimate power sources
* Some wind energy produces air.
* breath of fresh air.
* can also help diversify the economies of rural communities
  - bring wealth and jobs to Europe
* clean, renewable and sustainable means of electricity generation.
  - of age
* creates no air pollution.
* critical part of our renewable energy future.
* fights air pollution and provides skilled jobs and needed income to rural areas.
* generates clean electricity right here at home.
* global as well as a local player.
* helps our economy in other important ways.
* is abundant, with large resources located throughout the West
  - already the cheapest form of electricity, and can only spread further
* is also a source of clean, non-polluting, electricity
  - capital intensive
  - more favorable than plutonium as a fuel for the long-term
  - among the most efficient renewable energy resources available
  - an indirect form of solar energy
  - another type of renewable energy
  - capable of generating billions of kilowatt-hours and creating thousands of jobs
  - clean, biomass energy is clean and it's reliable
  - in fact a form of solar energy
  - mechanical energy
  - more abundant in the northwest portion of the state
  - one of the cleanest forms of energy around
* is one of the most competitive of the alternative energy sources
  - cost-effective energy options for reducing global warming
  - environmentally benign forms of energy development
  - popular renewable energy technologies
  - promising renewable energy resources in the world today
  - safest energy technologies
  - produced when wind turns turbines that are used to generate electricity
* is renewable and affordable
  - because it harnesses the earth's natural winds
  - the cheapest form of new energy generation
* is the fastest growing among new renewable sources
  - energy technology in the world
  - renewable energy technology in the world
* is the fastest growing source of electricity in the world
  - energy in the world
  - kinetic energy of the air in motion
  - least expensive renewable energy technology, and it is abundant and infinite
  - one of the most inexpensive forms of energy on the market
* is used by having a windmill that turns by any amount of wind
  - primarily to produce electricity
* is very abundant in many parts of the United States
  - close to market prices
* pollution-free and renewable energy source...
* primary governing factor in the erosion process.
* produces electricity without creating pollution or emitting carbon dioxide.
* provides both environmental and economic benefits.
* turns windmills.
* uses no ongoing resources except wind.
* very economically efficient source of energy.