Science test

• What is electrostatics?

  electricity that is localized, not moving
• What is static electricity?

  static means "at rest"
• What are 3 subatomic particles in atoms?


  Neutron, Proton, electron
• What is neutron?

  stationary particle with no charge, the neutron is located in the nucleus
• What is a proton?

  stationary particle with positive charge, located in the nucleus
• What is a electron?

  moving particle with negative charge, located at the orbits
• What does friction (rubbing) provide?

  provides enough energy to cause electrons to transfer between material
• What is the conservation of charge?

  since no new particles are created the total number of (+) and (-) stay the same always
• What is an insulator?

  electrical charge is localized - fixed
• What is an example of insulator?

  rubber, plastic, cloth, glass, wood
• What is conductor?

  electrical charge spreads through material
• What are examples of a good conductor?


  metals
• What is polarization?

  separation of changed within a neutral material creating (+) and (-) areas
• What is current electricity?

  the flow of electrons through a complete circuit
• What are the two basic sets that is created by the most electricity?

  remove electrons from one location - takes energy ~ 2. let electrons flow back - releases energy
• What are five examples of electricity?

  chemical, thermoelectric, photoelectric, piezoelectric, electomagnetic
• What is chemical?

  source converts chemical energy into electrical energy
• What are examples of chemical?

  . reaction separates electrons from metal (+)

  . energized electrons collect at other metal (-)

  . electrons flow back to (+) metal
• What is thermoelectric?

  source converts heat energy into electric energy
• What are examples of thermoelectric?

  . metals heated at one end and cooled at other

  . energized electrons flow towards cool side
• What is photoelectric?

  source converts solar energy into electric energy
• What are examples of Photoelectric?

  . light energy separates electrons from material

  . energized electrons accumulate on "collector"

  . creates weak flow of electrons
• What is Piezoelectric?

  source that converts mechanical energy into electrical energy
• What are examples of Piezoelectric?

  . (some) materials polarized (have charge attached to it) when squeezed

  . creates charge separation across the forces

  . electrons flow when forces are connected
• What is Electromagnetic?

  source converts mechanical energy into electrical energy
• What are examples of Electromagnetic?

  . coil of wire spinning through a magnet creates flow of energized electrons

  . device is called a generator