Forms of Energy
the energy carried by electricity
electrical energy
Energy is defined as the ability to do what?
Work or change
The transfer of energy that occurs when a force makes an object move is called what?
work
An energy resource that is replenished as fast or faster than it is used
renewable resource
energy resource that is limited in amounts
nonrenewable resource
energy stored in the bonds of atoms and molecules
chemical energy
When energy moves from one form to another without changing form
Many forms of energy exist, but what are the two basic categories?
potential and kinetic energy
What is the source of solar energy?
The Sun
Most of the energy used in the U.S. comes from nonrenewable energy resources?
True or False
True (natural gas and coal)
energy an object has due to its motion
kinetic energy
When one form of energy is converted to another form of energy
energy transformation
A toaster transforms electrical energy into what energy?
thermal energy
Hydroelectric plants are powered by what?
Where do nonrenewable resources come from?
stored energy an object has because of its position or state
potential energy
Says that energy cannot be destroyed or created
law of conservation of energy
Energy transformations are inefficient because some energy is transformed into a form that is what?
not usable
What is the source of Geothermal energy?
The Earth's hot tempature
Some energy plants use fission to produce what type of energy?
nuclear energy
the sum of potential energy and kinetic energy in a system
mechanical energy
A system that exchanges matter or energy with the environment
open system
A generator is turned by the turbine changing the kinetic energy of wind to what energy?
electric energy
Burning wood, plants, and even manure or garbage are considered what kind of renewable resource?
Petroleum, natural gas, propane, and coal are what?
fossil fuels