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Design and Technology

Beschreibung

KS4 (GCSE) Year 8 (DT) Mindmap am Design and Technology, erstellt von Oliver H am 22/04/2014.
Oliver H
Mindmap von Oliver H, aktualisiert more than 1 year ago
Oliver H
Erstellt von Oliver H vor etwa 10 Jahre
110
3
2

Zusammenfassung der Ressource

Design and Technology
  1. Mechanisms
    1. Motion
      1. Cams
        1. Levers
    2. Electricity
      1. Flow of spare electrons through a material
        1. Materials with large number of spare electrons = conductors
          1. Materials with few = Insulators
            1. Air, Wood, Plastic
              1. Very high resistance
                1. Impede flow of spare electrons
              2. Gold, silver, bronze, steel, water, etc
                1. Very low resistance
                  1. Doesn't impede flow of spare electrons
                2. LED's
                  1. Politic [Have +/- poles] Must be connected correct way round
                  2. Symbols
                    1. Potential Dividers
                      1. Sensing Circuit
                        1. Current
                          1. The physical number of spare electrons moving
                          2. Voltage
                            1. The push causing the spare electrons to move
                            2. Transistor
                              1. Transistors = Switch
                                1. Take small current and turn into large one
                                  1. Amplification

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