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5th Science Electricity

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  • Who made the prototype of a mobile phone in 1973?
    Martin Cooper?
  • What is an example of an insulator?
    Plastic or rubber
  • What does a switch do?
    It opens and closes the circuit
  • What are the 4 parts of an electrical circuit?
    A power source, a conductor, a switch and a load
  • What is a closed electrical circuit able to do?
    Produce and transport electrical current
  • What does a load do in a circuit?
    It converts the electricity to another form of energy. Eg: a lightbulb
  • What did Alan Turing create in 1936?
    A simple design of a computer
  • What charge does an atom has if it has more electrons than protons?
    A negative charge
  • What are the parts of an atom called that surround the nucleus?
    Electrons
  • Who invented the incandescent light bulb?
    Thomas Edison in 1879
  • What do we call the elements that allow for electrical current?
    Conductors
  • Objects that have similar charge do what to each other?
    They repel each other
  • What charge does an atom have if it has equal electrons and protons?
    It has a neutral charge
  • When does an atom have a positive charge?
    When it has more PROTONS than electrons
  • What is an example of a power source?
    A battery, solar panel, etc.
  • What are examples of conductors?
    Metals and water
  • Who invented the telephone?
    Alexander Graham Bell in 1876
  • What is one example of static electricity?
    Lightning, electrical storms, small shocks, balloon and hair, etc.
  • What is the smallest possible unit of a chemical element called?
    An atom!
  • What is electricity?
    It is the flow of electrons between atoms!
  • What kind of charge do electrons have?
    Negative
  • What makes up the nucleus of an atom?
    Protons and Neutrons
  • What do we call the elements that do not allow the movement of electrons?
    Insulators
  • What charge do neutrons have?
    Trick! They have no charge
  • When the electrons move from an object with negative charge to an object with positive charge what type of electricity is produced?
    Static electricity
  • What are two forms of electricity?
    Static electricity and Electrical current
  • What kind of electricity is caused by the exchange of electrons between elements?
    Electrical current
  • Objects that have opposite charge do what to each other?
    They attract each other
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