Electronics Worksheet: What Is IoT

Electronics lesson 27: What is IoT? · Set 27 · 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 30 minutes. How many readings arrive in 6 hours?
2. 2.🌐 A soil sensor sends a reading to an app every 30 minutes. How many readings arrive in 4 hours?
3. 3.What does the phone app do? (a) stores data online (b) shows data to you (c) carries the data (d) acts on a command
4. 4.🔢 To get a sensor reading onto a phone, which is the FIRST step? (a) the board reads it (b) the cloud stores it (c) the app shows it (d) the sensor measures
5. 5.🌐 A weather station sends one reading every 60 seconds. How many readings does it send in 2 minutes?
6. 6.🌐 A soil sensor sends a reading to an app every 10 minutes. How many readings arrive in 5 hours?
7. 7.🌐 What does IoT stand for? (a) Input of Tools (b) Internet of Talk (c) Inside of Toys (d) Internet of Things
8. 8.🌐 Is a smart energy meter an IoT device? (a) not an IoT device (b) an IoT device
9. 9.Which of these is not an IoT device? (a) a Wi-Fi smart plug (b) an app-controlled bulb (c) a Wi-Fi doorbell camera (d) a wind-up clock
10. 10.🌐 Is a pencil sharpener an IoT device? (a) an IoT device (b) not an IoT device
11. 11.🌐 Is a wind-up clock an IoT device? (a) an IoT device (b) not an IoT device
12. 12.🏠 Which is a smart-home example? (a) a candle in a jar (b) a hand fan (c) lights on from an app (d) a printed map
13. 13.What does the sensor do? (a) measures the real world (b) acts on a command (c) shows data to you (d) carries the data
14. 14.🌐 Is an app-controlled bulb an IoT device? (a) not an IoT device (b) an IoT device
15. 15.What does the Wi-Fi link do? (a) stores data online (b) carries the data (c) measures the real world (d) shows data to you
16. 16.🔢 To get a sensor reading onto a phone, which comes first: “the board reads it” or “the cloud stores it”? (a) the cloud stores it (b) the board reads it
17. 17.🔍 Which is the odd one out? (a) a Wi-Fi weather station (b) a Wi-Fi doorbell camera (c) a fitness band with app (d) a battery torch
18. 18.Which of these is an IoT device? (a) a Wi-Fi weather station (b) a pencil sharpener (c) a battery torch (d) a plain table fan
19. 19.🌐 A weather station sends one reading every 30 seconds. How many readings does it send in 10 minutes?
20. 20.🔢 To get a sensor reading onto a phone, what comes right after “the sensor measures”? (a) it is sent by Wi-Fi (b) the app shows it (c) the cloud stores it (d) the board reads it
21. 21.What does the microcontroller do? (a) reads values, decides (b) stores data online (c) shows data to you (d) carries the data
22. 22.Which of these is an IoT device? (a) a plain table fan (b) a pencil sharpener (c) a Wi-Fi doorbell camera (d) a plain wall switch
23. 23.Which of these is not an IoT device? (a) a Wi-Fi smart plug (b) a Wi-Fi doorbell camera (c) a fitness band with app (d) a paper calendar
24. 24.What does the cloud server do? (a) shows data to you (b) acts on a command (c) stores data online (d) carries the data
25. 25.🌐 A weather station sends one reading every 20 seconds. How many readings does it send in 8 minutes?
26. 26.🔢 To get a sensor reading onto a phone, what comes right after “the board reads it”? (a) it is sent by Wi-Fi (b) the app shows it (c) the cloud stores it (d) the sensor measures
27. 27.🌐 How does a home IoT device usually send its data to the app? (a) by post (b) by shouting (c) through a candle (d) over Wi-Fi
28. 28.Which of these is not an IoT device? (a) a Wi-Fi smart plug (b) a pencil sharpener (c) an app-controlled bulb (d) a Wi-Fi doorbell camera
29. 29.🔍 Which is the odd one out? (a) an app-controlled bulb (b) a Wi-Fi doorbell camera (c) a Wi-Fi weather station (d) a wind-up clock
30. 30.🌐 Each reading a sensor sends is 25 bytes. How many bytes do 90 readings take?
31. 31.Which of these is an IoT device? (a) a wind-up clock (b) a plain wall switch (c) a paper calendar (d) a Wi-Fi smart plug
32. 32.🌐 In an IoT system, which part reads values, decides? (a) Wi-Fi (b) microcontroller (c) phone app (d) cloud server
33. 33.Which of these is not an IoT device? (a) a plain table fan (b) an app-controlled bulb (c) a Wi-Fi doorbell camera (d) a Wi-Fi smart plug
34. 34.🔢 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 app shows it (c) the board reads it (d) the sensor measures
35. 35.🌐 Is a Wi-Fi weather station an IoT device? (a) an IoT device (b) not an IoT device
36. 36.🌐 Each reading a sensor sends is 20 bytes. How many bytes do 120 readings take?
37. 37.🔍 Which is the odd one out? (a) a pencil sharpener (b) a paper calendar (c) a plain table fan (d) a Wi-Fi doorbell camera
38. 38.🔢 To get a sensor reading onto a phone, which comes first: “it is sent by Wi-Fi” or “the sensor measures”? (a) it is sent by Wi-Fi (b) the sensor measures
39. 39.🔍 Which is the odd one out? (a) a plain wall switch (b) a pencil sharpener (c) a wind-up clock (d) a Wi-Fi weather station
40. 40.🔍 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

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