• is a nuclear reaction in which hydrogen nuclei
fuse together to form helium nuclei and
• In this state, some 120 million tons of matter-
-mostly hydrogen--are converted into helium
on the sun every minute, with some of the
mass being converted into energy.
• All nuclear power plants use nuclear fission, and
most nuclear power plants use uranium atoms.
• a neutron hits a uranium atom and splits it,
releasing a large amount of energy in the form of
heat and radiation.
• More neutrons are also released when a uranium
atom splits. These neutrons go on to hit other
uranium atoms, and the process repeats itself
over and over again. This is called a nuclear
• In the atmosphere, the pressure isn’t
constant. This is primarily because the
sun heats the earth’s surface unevenly.
• As heat is transferred to the air, we get
regions of warm and cool air which can
turn into regions of low and high
pressure. This difference in pressure
makes a force that causes the wind to
• Electricity is the flow of
electrical power or charge.
• Electricity is a secondary
energy source, and it is also
referred to as an energy
carrier. That means that
consumers use energy in the
form of electricity, which is
produced from the conversion
of other sources of energy,
such as coal, natural gas,
nuclear, solar, or wind energy.
• electricity itself is not
renewable or nonrenewable.