Download 12.4 Notes

Survey
yes no Was this document useful for you?
   Thank you for your participation!

* Your assessment is very important for improving the work of artificial intelligence, which forms the content of this project

Document related concepts

Distributed generation wikipedia, lookup

Conservation of energy wikipedia, lookup

Low-carbon economy wikipedia, lookup

Kinetic energy wikipedia, lookup

Internal energy wikipedia, lookup

Life-cycle greenhouse-gas emissions of energy sources wikipedia, lookup

Potential energy wikipedia, lookup

Zero-energy building wikipedia, lookup

100% renewable energy wikipedia, lookup

Dark energy wikipedia, lookup

Open energy system models wikipedia, lookup

Energy applications of nanotechnology wikipedia, lookup

Energy Independence and Security Act of 2007 wikipedia, lookup

Energy in the United Kingdom wikipedia, lookup

Energy efficiency in British housing wikipedia, lookup

United States energy law wikipedia, lookup

Energy policy of the European Union wikipedia, lookup

Negawatt power wikipedia, lookup

Energy harvesting wikipedia, lookup

Energy policy of Finland wikipedia, lookup

Energy policy of the United Kingdom wikipedia, lookup

Alternative energy wikipedia, lookup

Energy efficiency in transport wikipedia, lookup

Energy returned on energy invested wikipedia, lookup

International Energy Agency wikipedia, lookup

World energy consumption wikipedia, lookup

Energy Charter Treaty wikipedia, lookup

Regenerative brake wikipedia, lookup

Energy storage wikipedia, lookup

Public schemes for energy efficient refurbishment wikipedia, lookup

Low-Income Home Energy Assistance Program wikipedia, lookup

Energy subsidies wikipedia, lookup

William Flynn Martin wikipedia, lookup

Rebound effect (conservation) wikipedia, lookup

Efficient energy use wikipedia, lookup

Transcript
Conservation of Energy (12.4) Notes
Energy
Potential energy can become ____________ energy, and kinetic energy can _____________ potential
Trans-
energy. Label the rollercoaster to show where the car has the greatest and least amount of potential and
formations
kinetic energy.
Give two other examples in which potential energy is being transformed into kinetic energy and/or viseversa.
1. ____________________________________________________________________
2. ____________________________________________________________________
The Law of
State the law in its simplest form: _______________________________________________
Conservation
of Energy
The law of conservation of energy requires that at any given time, the __________ energy
should be the ____________. Whenever the total energy in a system increases, it must be due to
energy that enters the system from an _______________ source. None of the energy disappears;
it just changes __________.
To make studying a situation easier, scientists often limit their view to a small area or a small
number of objects. These boundaries define a ____________. When the flow of energy into and
out of a system is small enough that it can be ignored, the system is called a _____________
system. Most system are __________ systems, which exchange energy with the space that
surrounds them.
Efficiency
of Machines
Not all of the work done by a machine is _____________ work. Efficiency is the __________ of
useful work out to work in, and is usually expressed as a percentage.
Efficiency Equation:
Perpetual motion machines (machines designed to go on forever without any input of energy)
are _____________________ due to friction and air resistance.