Tle quiz #1

• Electricity is a form of energy resulting from the existence of charged particles either as an accumulation of charge or as a current
• Atom


  Smallest particles of an element that retains its characteristics
• Protons attract electrons


  Because they have opposite charges
• Same charges repel
• Electrons can move from one atom to another
• Electrons and protons have the same value which makes an atom electrically neutral
• Electricity


  Flow of electrons
• Electric Current


  Flow of electricity
• Chemical Reaction


  Happens when you insert metal into a chemical, causing a reaction that transfers electrons
• Electrolyte


  A chemical that facilitates the transfer of electrons
• Voltage


  • Is directly proportional to current
• Resistance


  • Is inversely proportional to voltage
• Direct Current


  Flows in one direction
• A battery is an example of an electrical source that uses/produces direct current
• Alternating Current


  Changes direction periodically
• Alternating current goes to load from source and goes back to source again
• Static Charges


  When certain materials are rubbed together, electrons transfer from one atom to another because of friction
• Magnetism


  Electricity through a conductor when a magnetic field moves through it
• The direction that the electrons move through the wire depends on how the magnetic field crosses the wire
• Magnetic flux lines


  Number of magnetic field lines passing through a given closed surface
• Valence Electron


  Electrons in the outermost shell or energy level of an atom
• Applying pressure can dislodge electrons from some atoms
• Materials under pressure have no charge, resulting in positive and negative charge build upon opposite sides
• Piezoelectricity


  Process of applying pressure to create electricity
• Heat


  Can make electricity because some materials can give or receive electrons
• As temperature rises


  Energy is increased, releasing more electrons and creating a larger voltage
• Thermocouple


  Measures temperature
• Photon


  A quantum of light that carries energy
• Photovoltaic Process


  Producing electricity using light, commonly in solar panels
• Renewable energy sources are sources of electricity that can be replenished naturally
• Wind Energy


  Moving air because of the difference in atmospheric pressure
• Wind energy varies based on geography, topography, and seasons
• Electricity from wind energy

  Turning wind energy into mechanical energy to create electricity
• Turbine


  Large structure with three blades used to generate electricity from wind
• Fossil fuels were created using organic matter, heat, pressure, and time
• Fossil fuels are sought after energy sources because they have a high energy density
• Fossil fuels are the world's dominant energy source
• Fossil fuels have a variety of applications from electricity production to transport fuels
• Fossil fuels are considered non-renewable because they take millions of years to form
• Nuclear energy is the energy held in the nucleus of an atom