Conductors%20and%20Insulators

1
Conductors and Insulators

• Learning Objective
• Make and explain predictions about circuits.
• Support predictions by demonstration circuits, or
  circuit diagrams.
• To recognise which materials are better
  conductors than others.

Starter Match up activity
2
Match up the components to the description
Component Short description
 Switch Turns the circuit off if too much current flows
Fuse Several cells connected together
Ammeter A very good conductor
Connecting Wires Changes electrical energy into heat and light energy.
Bulb Instrument used to measure the size of the current.
Battery Opening and closing them makes circuits complete or incomplete.
3
Match up the components to the description
Component Short description
 Switch Turns the circuit off if too much current flows
Fuse Several cells connected together
Ammeter A very good conductor
Connecting Wires Changes electrical energy into heat and light energy.
Bulb Instrument used to measure the size of the current.
Battery Opening and closing them makes circuits complete or incomplete.
4
Draw a circuit diagram for the equipment

Test material goes here!
Test as many materials as you can and say whether
they are CONDUCTORS or INSULATORS.
5
Conductors and Insulators
Material Prediction Observation Conductor or insulator
Plastic Insulator Bulb off insulator




6
Conclusion.

• What trends do you notice?
• Are there any exceptions?
• In your own words explain why the bulb lights
  when some materials are placed between the
  crocodile clips and not others?

7
Conductors are usually _______. This is because
metals have lots of tiny particles called
ELECTRONS that can move about and carry
electrical _______. Other materials are
generally _________. This means that electrical
current cannot _____ through them. The only
conductor that is not a metal is carbon, like in
your _______!
Words pencil, energy, flow, metals, insulators