Electronics Worksheet: What Is IoT

Electronics lesson 27: What is IoT? · Set 440 · 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.🌐 In an IoT system, which part shows data to you? (a) microcontroller (b) phone app (c) sensor (d) actuator
2. 2.🌐 A weather station sends one reading every 15 seconds. How many readings does it send in 10 minutes?
3. 3.🔍 Which is the odd one out? (a) a plain table fan (b) an app-controlled bulb (c) a plain wall switch (d) a battery torch
4. 4.What does the microcontroller do? (a) reads values, decides (b) acts on a command (c) carries the data (d) measures the real world
5. 5.🌐 A soil sensor sends a reading to an app every 5 minutes. How many readings arrive in 6 hours?
6. 6.🔍 Which is the odd one out? (a) a Wi-Fi smart plug (b) a paper calendar (c) a Wi-Fi doorbell camera (d) an app-controlled bulb
7. 7.🌐 Each reading a sensor sends is 10 bytes. How many bytes do 130 readings take?
8. 8.🌐 Each reading a sensor sends is 10 bytes. How many bytes do 20 readings take?
9. 9.🔍 Which is the odd one out? (a) a pencil sharpener (b) a plain table fan (c) a Wi-Fi weather station (d) a paper calendar
10. 10.🔍 Which is the odd one out? (a) a plain wall switch (b) a Wi-Fi smart plug (c) a pencil sharpener (d) a paper calendar
11. 11.🌐 A soil sensor sends a reading to an app every 30 minutes. How many readings arrive in 3 hours?
12. 12.🌐 Is a fitness band with app an IoT device? (a) an IoT device (b) not an IoT device
13. 13.🌐 A soil sensor sends a reading to an app every 10 minutes. How many readings arrive in 5 hours?
14. 14.🔍 Which is the odd one out? (a) a battery torch (b) a Wi-Fi weather station (c) a Wi-Fi smart plug (d) a fitness band with app
15. 15.🌐 In an IoT system, which part measures the real world? (a) sensor (b) microcontroller (c) actuator (d) cloud server
16. 16.🔢 To get a sensor reading onto a phone, which comes first: “it is sent by Wi-Fi” or “the sensor measures”? (a) the sensor measures (b) it is sent by Wi-Fi
17. 17.Which of these is an IoT device? (a) a battery torch (b) a paper calendar (c) a Wi-Fi weather station (d) a plain wall switch
18. 18.🌐 Each reading a sensor sends is 50 bytes. How many bytes do 180 readings take?
19. 19.Which of these is an IoT device? (a) a Wi-Fi smart plug (b) a pencil sharpener (c) a wind-up clock (d) a battery torch
20. 20.🌐 In an IoT system, which part carries the data? (a) cloud server (b) microcontroller (c) Wi-Fi (d) actuator
21. 21.🔍 Which is the odd one out? (a) a wind-up clock (b) a plain wall switch (c) a smart energy meter (d) a pencil sharpener
22. 22.🌐 Is a battery torch an IoT device? (a) not an IoT device (b) an IoT device
23. 23.Which of these is not an IoT device? (a) a Wi-Fi smart plug (b) a plain table fan (c) a fitness band with app (d) a smart energy meter
24. 24.🔢 To get a sensor reading onto a phone, what comes right after “the board reads it”? (a) the sensor measures (b) it is sent by Wi-Fi (c) the app shows it (d) the cloud stores it
25. 25.🌐 In an IoT system, which part acts on a command? (a) sensor (b) Wi-Fi (c) actuator (d) cloud server
26. 26.🌐 Is a paper calendar an IoT device? (a) not an IoT device (b) an IoT device
27. 27.🔢 To get a sensor reading onto a phone, what comes right after “the cloud stores it”? (a) it is sent by Wi-Fi (b) the sensor measures (c) the app shows it (d) the board reads it
28. 28.What does the Wi-Fi link do? (a) carries the data (b) stores data online (c) reads values, decides (d) shows data to you
29. 29.🔢 To get a sensor reading onto a phone, which is the LAST step? (a) the cloud stores it (b) it is sent by Wi-Fi (c) the app shows it (d) the sensor measures
30. 30.Which of these is an IoT device? (a) a paper calendar (b) a plain table fan (c) a pencil sharpener (d) a fitness band with app
31. 31.🌐 A soil sensor sends a reading to an app every 15 minutes. How many readings arrive in 2 hours?
32. 32.🔢 To get a sensor reading onto a phone, what comes right after “it is sent by Wi-Fi”? (a) the board reads it (b) the cloud stores it (c) the app shows it (d) the sensor measures
33. 33.What does the sensor do? (a) reads values, decides (b) shows data to you (c) carries the data (d) measures the real world
34. 34.🌐 In an IoT system, which part reads values, decides? (a) Wi-Fi (b) cloud server (c) microcontroller (d) sensor
35. 35.🌐 How does a home IoT device usually send its data to the app? (a) by post (b) through a candle (c) over Wi-Fi (d) by shouting
36. 36.🔢 To get a sensor reading onto a phone, which comes first: “the cloud stores it” or “the sensor measures”? (a) the sensor measures (b) the cloud stores it
37. 37.🔢 To get a sensor reading onto a phone, which comes first: “it is sent by Wi-Fi” or “the cloud stores it”? (a) the cloud stores it (b) it is sent by Wi-Fi
38. 38.Which of these is an IoT device? (a) a paper calendar (b) a smart energy meter (c) a plain table fan (d) a battery torch
39. 39.🌐 Is a plain wall switch an IoT device? (a) an IoT device (b) not an IoT device
40. 40.🌐 A weather station sends one reading every 30 seconds. How many readings does it send in 1 minute?

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