Electronics Worksheet: What Is IoT

Electronics lesson 27: What is IoT? · Set 450 · 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.🔢 To get a sensor reading onto a phone, what comes right after “the board reads it”? (a) the sensor measures (b) the app shows it (c) it is sent by Wi-Fi (d) the cloud stores it
2. 2.🔍 Which is the odd one out? (a) a plain table fan (b) a pencil sharpener (c) a smart energy meter (d) a wind-up clock
3. 3.🔍 Which is the odd one out? (a) a Wi-Fi doorbell camera (b) a Wi-Fi weather station (c) a Wi-Fi smart plug (d) a plain wall switch
4. 4.What does the microcontroller do? (a) reads values, decides (b) shows data to you (c) stores data online (d) acts on a command
5. 5.🌐 A soil sensor sends a reading to an app every 20 minutes. How many readings arrive in 6 hours?
6. 6.Which of these is an IoT device? (a) a wind-up clock (b) a plain wall switch (c) an app-controlled bulb (d) a battery torch
7. 7.🔢 To get a sensor reading onto a phone, which comes first: “it is sent by Wi-Fi” or “the board reads it”? (a) it is sent by Wi-Fi (b) the board reads it
8. 8.🌐 Is a fitness band with app an IoT device? (a) an IoT device (b) not an IoT device
9. 9.🌐 Is an app-controlled bulb an IoT device? (a) not an IoT device (b) an IoT device
10. 10.What does the cloud server do? (a) carries the data (b) stores data online (c) reads values, decides (d) shows data to you
11. 11.🔍 Which is the odd one out? (a) a smart energy meter (b) a plain table fan (c) a Wi-Fi smart plug (d) an app-controlled bulb
12. 12.🌐 Is a plain wall switch an IoT device? (a) not an IoT device (b) an IoT device
13. 13.🌐 Each reading a sensor sends is 10 bytes. How many bytes do 80 readings take?
14. 14.🌐 In an IoT system, which part measures the real world? (a) actuator (b) microcontroller (c) sensor (d) Wi-Fi
15. 15.Which of these is an IoT device? (a) a pencil sharpener (b) a Wi-Fi doorbell camera (c) a plain table fan (d) a paper calendar
16. 16.🏠 Which is a smart-home example? (a) a hand fan (b) lights on from an app (c) a printed map (d) a candle in a jar
17. 17.Which of these is an IoT device? (a) a plain wall switch (b) a Wi-Fi smart plug (c) a paper calendar (d) a battery torch
18. 18.🌐 A weather station sends one reading every 5 seconds. How many readings does it send in 8 minutes?
19. 19.🔢 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
20. 20.🌐 Is a paper calendar an IoT device? (a) an IoT device (b) not an IoT device
21. 21.🔍 Which is the odd one out? (a) a paper calendar (b) a battery torch (c) an app-controlled bulb (d) a plain table fan
22. 22.🌐 A weather station sends one reading every 5 seconds. How many readings does it send in 1 minute?
23. 23.Which of these is not an IoT device? (a) a Wi-Fi doorbell camera (b) a plain wall switch (c) an app-controlled bulb (d) a Wi-Fi weather station
24. 24.🌐 Is a Wi-Fi smart plug an IoT device? (a) not an IoT device (b) an IoT device
25. 25.🌐 Each reading a sensor sends is 50 bytes. How many bytes do 50 readings take?
26. 26.🌐 A soil sensor sends a reading to an app every 5 minutes. How many readings arrive in 2 hours?
27. 27.🌐 In an IoT system, which part reads values, decides? (a) cloud server (b) actuator (c) microcontroller (d) phone app
28. 28.🌐 Each reading a sensor sends is 10 bytes. How many bytes do 90 readings take?
29. 29.Which of these is not an IoT device? (a) a smart energy meter (b) a Wi-Fi smart plug (c) an app-controlled bulb (d) a battery torch
30. 30.🔍 Which is the odd one out? (a) a pencil sharpener (b) a Wi-Fi smart plug (c) an app-controlled bulb (d) a Wi-Fi weather station
31. 31.🌐 Is a plain table fan an IoT device? (a) an IoT device (b) not an IoT device
32. 32.🌐 A soil sensor sends a reading to an app every 30 minutes. How many readings arrive in 4 hours?
33. 33.🌐 Each reading a sensor sends is 10 bytes. How many bytes do 40 readings take?
34. 34.🌐 A weather station sends one reading every 5 seconds. How many readings does it send in 7 minutes?
35. 35.What does the Wi-Fi link do? (a) reads values, decides (b) carries the data (c) stores data online (d) acts on a command
36. 36.🌐 Is a Wi-Fi doorbell camera an IoT device? (a) an IoT device (b) not an IoT device
37. 37.🌐 A weather station sends one reading every 60 seconds. How many readings does it send in 7 minutes?
38. 38.🔢 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 app shows it (d) the sensor measures
39. 39.🔢 To get a sensor reading onto a phone, which comes first: “the cloud stores it” or “the app shows it”? (a) the app shows it (b) the cloud stores it
40. 40.🌐 Each reading a sensor sends is 20 bytes. How many bytes do 140 readings take?

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