Unit 3E: Magnets and Springs

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Unit 4F Circuits and conductors
Circuits and conductors
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Unit 4F Vocabulary

• Useful Words
• Battery
• Bulb
• Buzzer
• Motor
• Break
• Electrical insulator
• Electrical Conductor
• Metal
• Plastic

An electrical energy source
A light source powered by electricity
A sound source powered by electricity
A device that uses electricity to produce movement
In an electric circuit a break will stop the
circuit working
A material that will not allow electricity to
pass through
A material that will allow electricity to pass
through
A good conductor of electricity
An electrical insulator
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Unit 4F Simple Circuits

• Simple Circuits
• Which of the circuits will work and which ones
  will not?
• Why will they not work?

A
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Unit 4F Safe Experiments

• Safe Experiments

A
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Unit 4F Conductors and Insulators

• Conductors and Insulators
• What materials are good conductors of
  electricity?
• How can we test various materials to see if they
  are conductors?

Material Conductor Insulator



What do the results show? Are there any
exceptions to the general rule?
A
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Unit 4F Uses of metals and plastics in
electrical circuits

• Uses of metals and plastics in electrical circuits

D
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Unit 4F Switches

• Switches
• What does the switch actually do?

D
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Unit 4F Switches
D
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Unit 4F Varying components

• Varying Components

A
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Unit 4F Changing circuits

• Changing circuits
• How can you change the brightness of the bulb?
• List all the things you could change to do this.
• What will happen if you add more bulbs to the
  circuit?
• What would a switch do to the circuit?
• If the bulb was exchanged for a motor, how could
  the speed of the motor be changed?
• How could the loudness of a buzzer be changed?

?
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Unit 4F Summary

• Concept Map

S