Energy
What is energy?
Energy is defined in science as the ability to move matter or change matter in some other way. Energy can also be defined as the ability to do work.
What is electrical power?
Electric power is the rate at which a device changes electric current to another form of energy.
What current do generators produce?
Generators may produce either alternating or direct current, but they all change kinetic energy to electrical energy.
What is a non-renewable resource?
Non-renewable resources are used faster than they can be replaced. Once they're gone, they are, for all practical purposes, gone.
What is coal?
Coal is solid fossil fuels formed primarily from ancient swamp plants, especially during the Carboniferous.
What are some units of energy?
The SI unit for energy as well as work is the joule (J), or Newton ∙ meter (N ∙ m).
What is the unit for electrical power?
The SI unit of power is the watt.
What is an electronic transformer?
Generators may produce either alternating or direct current, but they all change kinetic energy to electrical energy.
What is a renewable resource?
Renewable resources are so abundant or are replaced so rapidly that, for all practical purposes, they can't run out.
What is petroleum?
Petroleum is a liquid fossil fuel. Petroleum is useful for vehicles because it is easily stored and transported.
Petroleum is also used to make waxes, plastics, fertilizers, and other products.
What can most energy be classified as?
Most energy can be classified as kinetic and potential energy
What is the electrical power equation?
Electric power can be calculated as current times voltage.
Electrical energy use equals the power of the appliance multiplied by the amount of time the appliance is used.
What is a step up transformer?
A step-up transformer increases voltage
What is the most commonly used non renewable resource?
Fossil fuels are the most commonly used non-renewable resources.
What is the issue with petroleum?
Using petroleum causes smog and global warming.
How can energy form?
Energy, or the ability to cause changes in matter, can exist in many different forms.
Energy can also change from one form to another
What is electromagnetic induction?
Electromagnetic induction is the process of generating electric current with a magnetic field.
What is a step down transformer?
A step down transformer decreases voltage.
What are some renewable resources?
Renewable resources include solar, wind, hydro, and (possibly) biomass.
How is natural gas formed?
Natural gas forms with crude oil but at higher temperatures.
What is energy conservation?
Energy conversion is the process in which energy changes from one form or type to another. Energy is always conserved in energy conversions.
What is the source of most electricity?
Coal
What is an electrical grid?
The electrical grid is the entire electrical system that generates, transmits, and distributes electric power throughout a region or country. It includes power plants, transmission lines, and electric substations.
What are hydrocarbons made of?
Hydrocarbons are molecules made of one carbon and four hydrogen atoms.
What is the difference between coal that forms at higher or lower temperatures?
Coal that forms at higher temperatures burns more cleanly.