Electronics Worksheet: What Is IoT

Electronics lesson 27: What is IoT? · Set 25 · 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, which is the FIRST step? (a) it is sent by Wi-Fi (b) the board reads it (c) the sensor measures (d) the cloud stores it
2. 2.🌐 In an IoT system, which part acts on a command? (a) sensor (b) actuator (c) Wi-Fi (d) phone app
3. 3.🌐 Is a plain wall switch an IoT device? (a) an IoT device (b) not an IoT device
4. 4.🌐 Is a plain table fan an IoT device? (a) an IoT device (b) not an IoT device
5. 5.🔢 To get a sensor reading onto a phone, which comes first: “the board reads it” or “the app shows it”? (a) the board reads it (b) the app shows it
6. 6.🌐 Each reading a sensor sends is 20 bytes. How many bytes do 110 readings take?
7. 7.🌐 Each reading a sensor sends is 25 bytes. How many bytes do 50 readings take?
8. 8.🌐 Is a pencil sharpener an IoT device? (a) not an IoT device (b) an IoT device
9. 9.🔍 Which is the odd one out? (a) a wind-up clock (b) a Wi-Fi doorbell camera (c) a paper calendar (d) a battery torch
10. 10.🔢 To get a sensor reading onto a phone, which comes first: “it is sent by Wi-Fi” or “the cloud stores it”? (a) it is sent by Wi-Fi (b) the cloud stores it
11. 11.🌐 Each reading a sensor sends is 20 bytes. How many bytes do 120 readings take?
12. 12.🌐 A soil sensor sends a reading to an app every 20 minutes. How many readings arrive in 1 hour?
13. 13.🌐 Each reading a sensor sends is 20 bytes. How many bytes do 150 readings take?
14. 14.Which of these is not an IoT device? (a) a Wi-Fi smart plug (b) a wind-up clock (c) a fitness band with app (d) a Wi-Fi weather station
15. 15.🔍 Which is the odd one out? (a) a Wi-Fi smart plug (b) a paper calendar (c) a battery torch (d) a plain wall switch
16. 16.🌐 Is a smart energy meter an IoT device? (a) not an IoT device (b) an IoT device
17. 17.🔍 Which is the odd one out? (a) a battery torch (b) a paper calendar (c) a plain table fan (d) a Wi-Fi weather station
18. 18.Which of these is an IoT device? (a) a paper calendar (b) a wind-up clock (c) a battery torch (d) a Wi-Fi weather station
19. 19.Which of these is an IoT device? (a) a battery torch (b) a plain wall switch (c) a plain table fan (d) a Wi-Fi doorbell camera
20. 20.🌐 Is an app-controlled bulb an IoT device? (a) an IoT device (b) not an IoT device
21. 21.🌐 Is a Wi-Fi weather station an IoT device? (a) an IoT device (b) not an IoT device
22. 22.Which of these is not an IoT device? (a) a Wi-Fi weather station (b) a Wi-Fi doorbell camera (c) a Wi-Fi smart plug (d) a plain wall switch
23. 23.🌐 A soil sensor sends a reading to an app every 5 minutes. How many readings arrive in 3 hours?
24. 24.🌐 A weather station sends one reading every 30 seconds. How many readings does it send in 4 minutes?
25. 25.🌐 A weather station sends one reading every 60 seconds. How many readings does it send in 7 minutes?
26. 26.🌐 Each reading a sensor sends is 10 bytes. How many bytes do 80 readings take?
27. 27.🔍 Which is the odd one out? (a) a fitness band with app (b) an app-controlled bulb (c) a plain wall switch (d) a Wi-Fi weather station
28. 28.🌐 In an IoT system, which part measures the real world? (a) actuator (b) Wi-Fi (c) sensor (d) microcontroller
29. 29.🌐 A weather station sends one reading every 20 seconds. How many readings does it send in 6 minutes?
30. 30.🌐 A soil sensor sends a reading to an app every 30 minutes. How many readings arrive in 3 hours?
31. 31.🌐 A soil sensor sends a reading to an app every 30 minutes. How many readings arrive in 6 hours?
32. 32.What does the sensor do? (a) shows data to you (b) carries the data (c) measures the real world (d) stores data online
33. 33.🌐 In an IoT system, which part stores data online? (a) microcontroller (b) cloud server (c) actuator (d) phone app
34. 34.🌐 What does IoT stand for? (a) Inside of Toys (b) Input of Tools (c) Internet of Things (d) Internet of Talk
35. 35.🔍 Which is the odd one out? (a) a plain table fan (b) a smart energy meter (c) an app-controlled bulb (d) a fitness band with app
36. 36.🌐 A soil sensor sends a reading to an app every 20 minutes. How many readings arrive in 4 hours?
37. 37.🔢 To get a sensor reading onto a phone, which comes first: “the app shows it” or “the board reads it”? (a) the app shows it (b) the board reads it
38. 38.🏠 Which is a smart-home example? (a) a printed map (b) a candle in a jar (c) a hand fan (d) lights on from an app
39. 39.Which of these is an IoT device? (a) a wind-up clock (b) a pencil sharpener (c) a fitness band with app (d) a plain wall switch
40. 40.What does the cloud server do? (a) shows data to you (b) measures the real world (c) stores data online (d) reads values, decides

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