Electronics Worksheet: What Is IoT

Electronics lesson 27: What is IoT? · Set 685 · 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.🌐 A weather station sends one reading every 20 seconds. How many readings does it send in 5 minutes?
2. 2.Which of these is not an IoT device? (a) a smart energy meter (b) a fitness band with app (c) a Wi-Fi smart plug (d) a plain table fan
3. 3.Which of these is an IoT device? (a) an app-controlled bulb (b) a plain wall switch (c) a battery torch (d) a wind-up clock
4. 4.🌐 A weather station sends one reading every 20 seconds. How many readings does it send in 9 minutes?
5. 5.🔢 To get a sensor reading onto a phone, which comes first: “it is sent by Wi-Fi” or “the app shows it”? (a) the app shows it (b) it is sent by Wi-Fi
6. 6.Which of these is not an IoT device? (a) an app-controlled bulb (b) a Wi-Fi smart plug (c) a wind-up clock (d) a Wi-Fi weather station
7. 7.🌐 In an IoT system, which part stores data online? (a) actuator (b) Wi-Fi (c) cloud server (d) sensor
8. 8.🌐 In an IoT system, which part measures the real world? (a) microcontroller (b) sensor (c) phone app (d) actuator
9. 9.🔢 To get a sensor reading onto a phone, what comes right after “the sensor measures”? (a) the app shows it (b) it is sent by Wi-Fi (c) the board reads it (d) the cloud stores it
10. 10.Which of these is not an IoT device? (a) a fitness band with app (b) an app-controlled bulb (c) a battery torch (d) a smart energy meter
11. 11.What does the microcontroller do? (a) stores data online (b) acts on a command (c) measures the real world (d) reads values, decides
12. 12.🌐 Is a Wi-Fi smart plug an IoT device? (a) an IoT device (b) not an IoT device
13. 13.🏠 Which is a smart-home example? (a) a candle in a jar (b) lights on from an app (c) a printed map (d) a hand fan
14. 14.🔍 Which is the odd one out? (a) a battery torch (b) an app-controlled bulb (c) a Wi-Fi smart plug (d) a smart energy meter
15. 15.What does the actuator do? (a) measures the real world (b) shows data to you (c) acts on a command (d) reads values, decides
16. 16.🌐 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
17. 17.🔢 To get a sensor reading onto a phone, which is the LAST step? (a) it is sent by Wi-Fi (b) the app shows it (c) the board reads it (d) the cloud stores it
18. 18.🌐 A soil sensor sends a reading to an app every 15 minutes. How many readings arrive in 1 hour?
19. 19.🌐 Each reading a sensor sends is 10 bytes. How many bytes do 170 readings take?
20. 20.What does the Wi-Fi link do? (a) measures the real world (b) stores data online (c) carries the data (d) acts on a command
21. 21.Which of these is not an IoT device? (a) a Wi-Fi smart plug (b) an app-controlled bulb (c) a fitness band with app (d) a paper calendar
22. 22.🌐 A weather station sends one reading every 30 seconds. How many readings does it send in 10 minutes?
23. 23.🌐 A weather station sends one reading every 5 seconds. How many readings does it send in 6 minutes?
24. 24.🌐 A soil sensor sends a reading to an app every 30 minutes. How many readings arrive in 5 hours?
25. 25.🌐 Is a Wi-Fi weather station an IoT device? (a) an IoT device (b) not an IoT device
26. 26.🔢 To get a sensor reading onto a phone, which comes first: “the sensor measures” or “the cloud stores it”? (a) the sensor measures (b) the cloud stores it
27. 27.🌐 In an IoT system, which part carries the data? (a) microcontroller (b) Wi-Fi (c) actuator (d) cloud server
28. 28.What does the sensor do? (a) shows data to you (b) measures the real world (c) acts on a command (d) reads values, decides
29. 29.What does the cloud server do? (a) measures the real world (b) stores data online (c) shows data to you (d) reads values, decides
30. 30.🔢 To get a sensor reading onto a phone, which comes first: “the app shows it” or “the cloud stores it”? (a) the app shows it (b) the cloud stores it
31. 31.🌐 In an IoT system, which part acts on a command? (a) microcontroller (b) actuator (c) phone app (d) Wi-Fi
32. 32.🔍 Which is the odd one out? (a) a fitness band with app (b) a Wi-Fi weather station (c) a Wi-Fi doorbell camera (d) a plain wall switch
33. 33.🔢 To get a sensor reading onto a phone, what comes right after “the board reads it”? (a) the cloud stores it (b) the app shows it (c) it is sent by Wi-Fi (d) the sensor measures
34. 34.🌐 Is an app-controlled bulb an IoT device? (a) not an IoT device (b) an IoT device
35. 35.🌐 In an IoT system, which part reads values, decides? (a) actuator (b) phone app (c) cloud server (d) microcontroller
36. 36.🌐 In an IoT system, which part shows data to you? (a) sensor (b) phone app (c) actuator (d) microcontroller
37. 37.🌐 A soil sensor sends a reading to an app every 20 minutes. How many readings arrive in 2 hours?
38. 38.🌐 Is a pencil sharpener an IoT device? (a) not an IoT device (b) an IoT device
39. 39.🔢 To get a sensor reading onto a phone, which is the FIRST step? (a) the cloud stores it (b) it is sent by Wi-Fi (c) the sensor measures (d) the board reads it
40. 40.Which of these is an IoT device? (a) a paper calendar (b) a battery torch (c) a Wi-Fi weather station (d) a pencil sharpener

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