O-LevelComputer ScienceAutomated and emerging technologies2210/12 · May/June 2016 · Q23 Marks
Motion sensors are used in a security system to detect intruders. Name three other sensors that could be used in the following applications. Give a different type of sensor for each application. Application controlling street lights monitoring a river for pollution controlling traffic lights Sensor
Mark scheme
Marking points from the official mark scheme (May/June 2016). The mark or mark type is shown in brackets.
- [3] 2 Application Sensor
- controlling street lights Light
- monitoring a river for pollution Gas, pH, temperature, light
- controlling traffic lights pressure, magnetic field,
- NOTE: The same sensor cannot be given twice
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