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Petroleum, oil, and natural gas are example of __________ fuels.
fossil fuels
A(n) ___________ resource is one that is replaced as quickly as it is used.
renewable resource
The wise and careful use of energy resources is called ________________.
conservation
What is common to both nuclear fusion and nuclear fission?
Matter is converted into energy.
_________ energy is stored energy due to position.
Potential
What are some examples of nonrenewable resources?
oil, natural gas, coal, and nuclear energy
_________ are substances that contaminate the environment.
Pollutants
Electricity produced from the energy of moving water is called ______________.
hydroelectricity
___________ is the transfer of thermal energy by collisions between particles in matter
Conduction
___________ energy is the energy an object has because of its motion.
Kinetic
What is common to both nuclear fusion and nuclear fission?
Matter is converted into energy
waste is any byproduct that results when radioactive materials are used.
Nuclear
Devices that use semiconductors to produce electricity from solar energy are
photovoltaic cells
What is a major problem with developing a fusion reactor
maintaining very high temperatures
. Energy stored in chemical bonds is called ____________.
Chemical potential energy
_________ is thermal energy that is transferred from something at a higher temperature to something at a lower temperature.
Heat
One reason alternative energy sources are needed is because ______________.
the supply of fossil fuels is diminishing.
Anything that can fall has stored energy called _____________.
gravitational potential energy
The kinetic energy of an object increases as its ______________ increases.
speed
The transfer of energy that does not require matter is ____________.
radiation
The process by which engine fuels burns is __________.
combustion
what are some poor thermal conductors?
wood, paper, air, and clothes
A material that reduces the transfer of thermal energy is a(n) __________.
insulator
Solar collectors are parts of ______________.
active solar heating systems
Which would be a thermal insulator?
glass