☰ Year plan · Communication Technology

Smart systems and climate change

Week 2 · Unit 1, Lesson 1 Intelligent Systems and Their Impact on Climate Change (2) · 3 lessons
1

Warming and polluted air: sense, think, act

ICT Prep 2 Term 1, Unit 1, Lesson 1: pp. 9–20
GoalShow how sensors, AI and machines can help against global warming and air pollution.
New words
climate change · long-term changes in the weather of the Earth, such as rising temperaturesglobal warming · the slow rise of the Earth’s temperature, linked to more carbon dioxide in the aircarbon dioxide · a gas released when fuel burnsair pollution · harmful gases and dust in the air we breathe
Explanation

Smart systems follow the same pattern for every environmental problem: sensors measure, AI analyses and suggests, a machine or a person acts. Take global warming. Its cause is more carbon dioxide and other harmful gases from cars and factories. Sensors measure the temperature and the gases in different places. The AI looks for the places and hours with the most gases and suggests ideas, such as switching on cleaning filters at a factory. Then a machine carries out the action. Air pollution is similar: its causes are exhaust from cars, factories and the burning of rubbish. Sensors in a street measure the harmful gases, the AI marks the worst streets and may suggest fewer cars at busy hours, and a notice warns people. Some of these systems are already used and some are still being tried, so we call many of them ideas that need testing.

ProblemCauseSensors measureAI suggestsMachine acts
Global warmingmore carbon dioxide from cars and factoriestemperature and gaseswhere and when gases peakfilters switch on
Air pollutionexhaust, factories, burning rubbishharmful gases in the airthe most polluted streetsa warning notice is sent
Worked examples
A school in a busy street has an air sensor on its wall. At noon it reports many harmful gases. The AI notices that the number rises every day when buses arrive. It suggests asking the buses to wait at another place. A teacher and the bus company decide.
gasespolluted airsensor finds itAI suggests
Hana reads that burning rubbish sends smoke into the air. She says the best smart system is one that finds the smoke early so that people can stop the fire. She is right that sensors help, but only people can put out a fire.
Class activity

Copy the table on paper. Add a third row for “car exhaust in a city centre” and fill each box in your own words. Then circle the box that is the AI’s job.

Practice
1
Name two causes of air pollution.
2
What is the sensors’ job in the pattern?
3
Which gas from fuel adds to global warming?
4
Why do we call some of these systems ideas?