Electronics Worksheet: What Is IoT

Electronics lesson 27: What is IoT? · Set 805 · 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 soil sensor sends a reading to an app every 10 minutes. How many readings arrive in 2 hours?
2. 2.🔢 To get a sensor reading onto a phone, which comes first: “the app shows it” or “the board reads it”? (a) the board reads it (b) the app shows it
3. 3.🌐 How does a home IoT device usually send its data to the app? (a) by shouting (b) over Wi-Fi (c) by post (d) through a candle
4. 4.What does the microcontroller do? (a) carries the data (b) measures the real world (c) shows data to you (d) reads values, decides
5. 5.🌐 Is a wind-up clock an IoT device? (a) an IoT device (b) not an IoT device
6. 6.🔍 Which is the odd one out? (a) an app-controlled bulb (b) a wind-up clock (c) a smart energy meter (d) a Wi-Fi weather station
7. 7.🌐 Is a Wi-Fi weather station an IoT device? (a) not an IoT device (b) an IoT device
8. 8.🔍 Which is the odd one out? (a) a Wi-Fi smart plug (b) a plain table fan (c) a fitness band with app (d) an app-controlled bulb
9. 9.🌐 In an IoT system, which part acts on a command? (a) Wi-Fi (b) cloud server (c) sensor (d) actuator
10. 10.🌐 A soil sensor sends a reading to an app every 20 minutes. How many readings arrive in 6 hours?
11. 11.🔍 Which is the odd one out? (a) an app-controlled bulb (b) a paper calendar (c) a smart energy meter (d) a Wi-Fi weather station
12. 12.🏠 Which is a smart-home example? (a) a hand fan (b) a candle in a jar (c) a printed map (d) lights on from an app
13. 13.🔢 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) it is sent by Wi-Fi (d) the sensor measures
14. 14.🌐 A weather station sends one reading every 10 seconds. How many readings does it send in 3 minutes?
15. 15.🌐 Is a fitness band with app an IoT device? (a) an IoT device (b) not an IoT device
16. 16.🌐 A soil sensor sends a reading to an app every 15 minutes. How many readings arrive in 2 hours?
17. 17.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 plain wall switch
18. 18.🌐 A weather station sends one reading every 60 seconds. How many readings does it send in 1 minute?
19. 19.What does the sensor do? (a) acts on a command (b) measures the real world (c) carries the data (d) reads values, decides
20. 20.🔢 To get a sensor reading onto a phone, which is the FIRST step? (a) the app shows it (b) the sensor measures (c) the board reads it (d) it is sent by Wi-Fi
21. 21.🌐 In an IoT system, which part carries the data? (a) phone app (b) sensor (c) microcontroller (d) Wi-Fi
22. 22.🌐 In an IoT system, which part shows data to you? (a) cloud server (b) actuator (c) sensor (d) phone app
23. 23.🔢 To get a sensor reading onto a phone, which comes first: “it is sent by Wi-Fi” or “the app shows it”? (a) it is sent by Wi-Fi (b) the app shows it
24. 24.🔢 To get a sensor reading onto a phone, which is the LAST step? (a) the board reads it (b) the sensor measures (c) the cloud stores it (d) the app shows it
25. 25.What does the phone app do? (a) reads values, decides (b) shows data to you (c) carries the data (d) measures the real world
26. 26.Which of these is an IoT device? (a) a wind-up clock (b) a paper calendar (c) a Wi-Fi weather station (d) a pencil sharpener
27. 27.🌐 A weather station sends one reading every 20 seconds. How many readings does it send in 3 minutes?
28. 28.🌐 Is a Wi-Fi doorbell camera an IoT device? (a) an IoT device (b) not an IoT device
29. 29.What does the cloud server do? (a) carries the data (b) measures the real world (c) shows data to you (d) stores data online
30. 30.🌐 Is a battery torch an IoT device? (a) an IoT device (b) not an IoT device
31. 31.🌐 A soil sensor sends a reading to an app every 15 minutes. How many readings arrive in 6 hours?
32. 32.🔢 To get a sensor reading onto a phone, what comes right after “the sensor measures”? (a) the board reads it (b) the app shows it (c) it is sent by Wi-Fi (d) the cloud stores it
33. 33.🌐 Each reading a sensor sends is 10 bytes. How many bytes do 150 readings take?
34. 34.🔢 To get a sensor reading onto a phone, which comes first: “the sensor measures” or “it is sent by Wi-Fi”? (a) it is sent by Wi-Fi (b) the sensor measures
35. 35.🔍 Which is the odd one out? (a) a paper calendar (b) a smart energy meter (c) a plain table fan (d) a wind-up clock
36. 36.🌐 In an IoT system, which part reads values, decides? (a) cloud server (b) microcontroller (c) sensor (d) phone app
37. 37.Which of these is an IoT device? (a) a battery torch (b) a plain wall switch (c) a wind-up clock (d) a smart energy meter
38. 38.🌐 Each reading a sensor sends is 50 bytes. How many bytes do 160 readings take?
39. 39.Which of these is an IoT device? (a) a pencil sharpener (b) a plain wall switch (c) a battery torch (d) an app-controlled bulb
40. 40.🔍 Which is the odd one out? (a) a fitness band with app (b) a smart energy meter (c) a battery torch (d) an app-controlled bulb

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