When coal is burned to produce electricity, the electrical energy produced is less than the potential energy of the coal. Which best explains this
observation?
as the coal is heated, the molecules move so fast that they are destroyed
some of the energy in the coal is destroyed by the intense heat required to release its
potential energy
some of the potential energy in the coal is converted into forms of energy other than
electricity
the amount of energy in the coal is not known

How do temperature and salinity affect deepwater currents? as temperatures and salinity levels of water increase, the water rises to the surface where it creates currents as it moves to colder regions. they create changes in wind direction, moving denser water in the same direction as the wind and causing the deepwater circulation patterns found in the ocean. they equalize the forces on undersea currents caused by the coriolis effect as they replace more dense water with less dense water. they create density differences that cause dense deepwater currents to flow toward the equator where they displace less dense, warmer water above them.