Electronics Worksheet: What Is IoT

Electronics lesson 27: What is IoT? · Set 6 · 40 questions

Remember (Sense, send, store, show): IoT device = an everyday thing that shares data over the internet (usually Wi-Fi and an app). Data flow: sensor → board → Wi-Fi → cloud → app (and commands back to an actuator). Readings sent = total time ÷ time between readings, in the same units.

1. 1.🔍 Which is the odd one out? (a) a plain table fan (b) a battery torch (c) a Wi-Fi smart plug (d) a wind-up clock
2. 2.🌐 What does IoT stand for? (a) Input of Tools (b) Inside of Toys (c) Internet of Things (d) Internet of Talk
3. 3.🌐 A weather station sends one reading every 60 seconds. How many readings does it send in 1 minute?
4. 4.🔢 To get a sensor reading onto a phone, which is the FIRST step? (a) it is sent by Wi-Fi (b) the cloud stores it (c) the board reads it (d) the sensor measures
5. 5.🌐 Is a wind-up clock an IoT device? (a) an IoT device (b) not an IoT device
6. 6.Which of these is not an IoT device? (a) a pencil sharpener (b) a Wi-Fi weather station (c) a Wi-Fi smart plug (d) a fitness band with app
7. 7.🔢 To get a sensor reading onto a phone, which comes first: “the sensor measures” or “the app shows it”? (a) the sensor measures (b) the app shows it
8. 8.🌐 A soil sensor sends a reading to an app every 20 minutes. How many readings arrive in 2 hours?
9. 9.🌐 Is an app-controlled bulb an IoT device? (a) not an IoT device (b) an IoT device
10. 10.🌐 Is a battery torch an IoT device? (a) not an IoT device (b) an IoT device
11. 11.🏠 Which is a smart-home example? (a) lights on from an app (b) a hand fan (c) a printed map (d) a candle in a jar
12. 12.🌐 Is a plain wall switch an IoT device? (a) not an IoT device (b) an IoT device
13. 13.🔍 Which is the odd one out? (a) a smart energy meter (b) a paper calendar (c) a battery torch (d) a plain wall switch
14. 14.What does the phone app do? (a) measures the real world (b) stores data online (c) acts on a command (d) shows data to you
15. 15.🔍 Which is the odd one out? (a) a smart energy meter (b) a Wi-Fi doorbell camera (c) a battery torch (d) a Wi-Fi weather station
16. 16.🔍 Which is the odd one out? (a) a battery torch (b) a pencil sharpener (c) a Wi-Fi weather station (d) a plain wall switch
17. 17.🔢 To get a sensor reading onto a phone, which comes first: “the sensor measures” or “it is sent by Wi-Fi”? (a) the sensor measures (b) it is sent by Wi-Fi
18. 18.🌐 A soil sensor sends a reading to an app every 15 minutes. How many readings arrive in 3 hours?
19. 19.🌐 A soil sensor sends a reading to an app every 20 minutes. How many readings arrive in 3 hours?
20. 20.🔢 To get a sensor reading onto a phone, what comes right after “it is sent by Wi-Fi”? (a) the app shows it (b) the board reads it (c) the cloud stores it (d) the sensor measures
21. 21.🌐 A weather station sends one reading every 60 seconds. How many readings does it send in 4 minutes?
22. 22.🔍 Which is the odd one out? (a) a Wi-Fi doorbell camera (b) a Wi-Fi smart plug (c) a fitness band with app (d) a plain table fan
23. 23.🌐 Is a pencil sharpener an IoT device? (a) not an IoT device (b) an IoT device
24. 24.🌐 A soil sensor sends a reading to an app every 10 minutes. How many readings arrive in 3 hours?
25. 25.🌐 In an IoT system, which part shows data to you? (a) sensor (b) microcontroller (c) Wi-Fi (d) phone app
26. 26.🌐 In an IoT system, which part carries the data? (a) cloud server (b) actuator (c) phone app (d) Wi-Fi
27. 27.🔍 Which is the odd one out? (a) a paper calendar (b) a pencil sharpener (c) a plain table fan (d) a Wi-Fi doorbell camera
28. 28.What does the microcontroller do? (a) stores data online (b) reads values, decides (c) measures the real world (d) carries the data
29. 29.🌐 How does a home IoT device usually send its data to the app? (a) through a candle (b) by shouting (c) over Wi-Fi (d) by post
30. 30.🔢 To get a sensor reading onto a phone, which is the LAST step? (a) the sensor measures (b) the app shows it (c) the cloud stores it (d) the board reads it
31. 31.Which of these is not an IoT device? (a) a Wi-Fi weather station (b) a battery torch (c) a Wi-Fi smart plug (d) a smart energy meter
32. 32.Which of these is an IoT device? (a) a plain wall switch (b) a plain table fan (c) a battery torch (d) a Wi-Fi smart plug
33. 33.🔢 To get a sensor reading onto a phone, what comes right after “the board reads it”? (a) it is sent by Wi-Fi (b) the cloud stores it (c) the app shows it (d) the sensor measures
34. 34.What does the cloud server do? (a) shows data to you (b) reads values, decides (c) stores data online (d) measures the real world
35. 35.🔢 To get a sensor reading onto a phone, what comes right after “the cloud stores it”? (a) the board reads it (b) the app shows it (c) the sensor measures (d) it is sent by Wi-Fi
36. 36.🔍 Which is the odd one out? (a) a Wi-Fi doorbell camera (b) a wind-up clock (c) an app-controlled bulb (d) a Wi-Fi smart plug
37. 37.🌐 Each reading a sensor sends is 10 bytes. How many bytes do 140 readings take?
38. 38.🔍 Which is the odd one out? (a) an app-controlled bulb (b) a pencil sharpener (c) a battery torch (d) a paper calendar
39. 39.🌐 Is a Wi-Fi weather station an IoT device? (a) not an IoT device (b) an IoT device
40. 40.🌐 A soil sensor sends a reading to an app every 15 minutes. How many readings arrive in 2 hours?

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