Electronics Worksheet: What Is IoT

Electronics lesson 27: What is IoT? · Set 89 · 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.🌐 Each reading a sensor sends is 25 bytes. How many bytes do 60 readings take?
2. 2.🌐 In an IoT system, which part acts on a command? (a) Wi-Fi (b) microcontroller (c) sensor (d) actuator
3. 3.🌐 Is a smart energy meter an IoT device? (a) an IoT device (b) not an IoT device
4. 4.🌐 Is a wind-up clock an IoT device? (a) not an IoT device (b) an IoT device
5. 5.🔍 Which is the odd one out? (a) an app-controlled bulb (b) a wind-up clock (c) a fitness band with app (d) a Wi-Fi smart plug
6. 6.🌐 A soil sensor sends a reading to an app every 5 minutes. How many readings arrive in 5 hours?
7. 7.What does the sensor do? (a) stores data online (b) acts on a command (c) measures the real world (d) shows data to you
8. 8.🌐 In an IoT system, which part stores data online? (a) sensor (b) cloud server (c) phone app (d) microcontroller
9. 9.Which of these is not an IoT device? (a) a Wi-Fi doorbell camera (b) a Wi-Fi smart plug (c) a smart energy meter (d) a paper calendar
10. 10.🌐 How does a home IoT device usually send its data to the app? (a) through a candle (b) over Wi-Fi (c) by shouting (d) by post
11. 11.🔍 Which is the odd one out? (a) a pencil sharpener (b) a Wi-Fi doorbell camera (c) a battery torch (d) a paper calendar
12. 12.🌐 Is a Wi-Fi smart plug an IoT device? (a) not an IoT device (b) an IoT device
13. 13.🌐 Is a fitness band with app an IoT device? (a) not an IoT device (b) an IoT device
14. 14.Which of these is not an IoT device? (a) a Wi-Fi smart plug (b) a fitness band with app (c) a plain wall switch (d) a Wi-Fi weather station
15. 15.🔢 To get a sensor reading onto a phone, what comes right after “it is sent by Wi-Fi”? (a) the cloud stores it (b) the sensor measures (c) the board reads it (d) the app shows it
16. 16.What does the microcontroller do? (a) measures the real world (b) carries the data (c) reads values, decides (d) acts on a command
17. 17.🌐 A soil sensor sends a reading to an app every 20 minutes. How many readings arrive in 6 hours?
18. 18.🌐 Is a plain wall switch an IoT device? (a) not an IoT device (b) an IoT device
19. 19.🌐 A weather station sends one reading every 30 seconds. How many readings does it send in 2 minutes?
20. 20.🔍 Which is the odd one out? (a) an app-controlled bulb (b) a Wi-Fi weather station (c) a Wi-Fi smart plug (d) a pencil sharpener
21. 21.🌐 Is an app-controlled bulb an IoT device? (a) not an IoT device (b) an IoT device
22. 22.Which of these is not an IoT device? (a) a battery torch (b) a fitness band with app (c) a Wi-Fi weather station (d) a Wi-Fi smart plug
23. 23.🌐 In an IoT system, which part reads values, decides? (a) microcontroller (b) sensor (c) Wi-Fi (d) actuator
24. 24.Which of these is an IoT device? (a) a pencil sharpener (b) a Wi-Fi weather station (c) a wind-up clock (d) a battery torch
25. 25.What does the phone app do? (a) shows data to you (b) stores data online (c) reads values, decides (d) carries the data
26. 26.🌐 A weather station sends one reading every 30 seconds. How many readings does it send in 4 minutes?
27. 27.🌐 A soil sensor sends a reading to an app every 15 minutes. How many readings arrive in 4 hours?
28. 28.🌐 Each reading a sensor sends is 50 bytes. How many bytes do 50 readings take?
29. 29.Which of these is an IoT device? (a) a plain wall switch (b) a plain table fan (c) a wind-up clock (d) a Wi-Fi doorbell camera
30. 30.Which of these is an IoT device? (a) a plain table fan (b) a plain wall switch (c) a smart energy meter (d) a wind-up clock
31. 31.🌐 A soil sensor sends a reading to an app every 30 minutes. How many readings arrive in 1 hour?
32. 32.🌐 A soil sensor sends a reading to an app every 5 minutes. How many readings arrive in 3 hours?
33. 33.🔍 Which is the odd one out? (a) a pencil sharpener (b) a Wi-Fi weather station (c) a plain table fan (d) a plain wall switch
34. 34.🌐 Is a paper calendar an IoT device? (a) not an IoT device (b) an IoT device
35. 35.🌐 In an IoT system, which part measures the real world? (a) cloud server (b) sensor (c) microcontroller (d) actuator
36. 36.🔢 To get a sensor reading onto a phone, which is the LAST step? (a) it is sent by Wi-Fi (b) the cloud stores it (c) the app shows it (d) the board reads it
37. 37.🔍 Which is the odd one out? (a) a Wi-Fi smart plug (b) a plain table fan (c) a Wi-Fi weather station (d) a smart energy meter
38. 38.🔍 Which is the odd one out? (a) a paper calendar (b) a Wi-Fi smart plug (c) a pencil sharpener (d) a plain wall switch
39. 39.🔢 To get a sensor reading onto a phone, which is the FIRST step? (a) it is sent by Wi-Fi (b) the board reads it (c) the sensor measures (d) the app shows it
40. 40.What does the Wi-Fi link do? (a) measures the real world (b) shows data to you (c) carries the data (d) acts on a command

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