Design and Technology

Oliver H
Mind Map by , created over 5 years ago

KS4 (GCSE) Year 8 (DT) Mind Map on Design and Technology, created by Oliver H on 04/22/2014.

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Oliver H
Created by Oliver H over 5 years ago
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Design and Technology
1 Mechanisms
1.1 Motion
1.1.1 Cams
1.1.1.1 Levers
2 Electricity
2.1 Flow of spare electrons through a material
2.2 Materials with large number of spare electrons = conductors
2.2.1 Materials with few = Insulators
2.2.1.1 Air, Wood, Plastic
2.2.1.2 Very high resistance
2.2.1.2.1 Impede flow of spare electrons
2.2.2 Gold, silver, bronze, steel, water, etc
2.2.3 Very low resistance
2.2.3.1 Doesn't impede flow of spare electrons
2.3 LED's
2.3.1 Politic [Have +/- poles] Must be connected correct way round
2.4 Symbols
2.5 Potential Dividers
2.6 Sensing Circuit
2.7 Current
2.7.1 The physical number of spare electrons moving
2.8 Voltage
2.8.1 The push causing the spare electrons to move
2.9 Transistor
2.9.1 Transistors = Switch
2.9.1.1 Take small current and turn into large one
2.9.1.1.1 Amplification