Electronics Worksheet: What Is IoT

Electronics lesson 27: What is IoT? · Set 131 · 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 2 hours?
2. 2.What does the Wi-Fi link do? (a) reads values, decides (b) carries the data (c) measures the real world (d) acts on a command
3. 3.🔢 To get a sensor reading onto a phone, which is the FIRST step? (a) the board reads it (b) the sensor measures (c) the cloud stores it (d) it is sent by Wi-Fi
4. 4.🌐 In an IoT system, which part shows data to you? (a) sensor (b) phone app (c) Wi-Fi (d) microcontroller
5. 5.🌐 In an IoT system, which part measures the real world? (a) microcontroller (b) Wi-Fi (c) phone app (d) sensor
6. 6.What does the actuator do? (a) acts on a command (b) stores data online (c) carries the data (d) measures the real world
7. 7.🌐 Is a smart energy meter an IoT device? (a) an IoT device (b) not an IoT device
8. 8.🌐 In an IoT system, which part reads values, decides? (a) phone app (b) sensor (c) actuator (d) microcontroller
9. 9.Which of these is an IoT device? (a) a plain wall switch (b) a paper calendar (c) a Wi-Fi doorbell camera (d) a wind-up clock
10. 10.Which of these is not an IoT device? (a) an app-controlled bulb (b) a plain table fan (c) a Wi-Fi weather station (d) a Wi-Fi smart plug
11. 11.What does the sensor do? (a) stores data online (b) acts on a command (c) reads values, decides (d) measures the real world
12. 12.🌐 Each reading a sensor sends is 20 bytes. How many bytes do 110 readings take?
13. 13.Which of these is not an IoT device? (a) a Wi-Fi weather station (b) a paper calendar (c) a smart energy meter (d) a fitness band with app
14. 14.Which of these is an IoT device? (a) a battery torch (b) a wind-up clock (c) an app-controlled bulb (d) a paper calendar
15. 15.🌐 A weather station sends one reading every 15 seconds. How many readings does it send in 7 minutes?
16. 16.What does the cloud server do? (a) stores data online (b) reads values, decides (c) measures the real world (d) acts on a command
17. 17.🔍 Which is the odd one out? (a) an app-controlled bulb (b) a Wi-Fi doorbell camera (c) a battery torch (d) a Wi-Fi smart plug
18. 18.🔢 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
19. 19.🌐 Is a fitness band with app an IoT device? (a) an IoT device (b) not an IoT device
20. 20.🔢 To get a sensor reading onto a phone, which is the LAST step? (a) the cloud stores it (b) the board reads it (c) the app shows it (d) it is sent by Wi-Fi
21. 21.🌐 How does a home IoT device usually send its data to the app? (a) by post (b) through a candle (c) by shouting (d) over Wi-Fi
22. 22.🌐 Is an app-controlled bulb an IoT device? (a) not an IoT device (b) an IoT device
23. 23.🔢 To get a sensor reading onto a phone, which comes first: “the board reads it” or “the cloud stores it”? (a) the board reads it (b) the cloud stores it
24. 24.🌐 Each reading a sensor sends is 10 bytes. How many bytes do 20 readings take?
25. 25.🔍 Which is the odd one out? (a) a Wi-Fi doorbell camera (b) a fitness band with app (c) a plain table fan (d) a Wi-Fi weather station
26. 26.🌐 In an IoT system, which part stores data online? (a) phone app (b) microcontroller (c) sensor (d) cloud server
27. 27.🔢 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
28. 28.🔍 Which is the odd one out? (a) a smart energy meter (b) a plain wall switch (c) an app-controlled bulb (d) a Wi-Fi weather station
29. 29.Which of these is an IoT device? (a) a plain table fan (b) a Wi-Fi weather station (c) a wind-up clock (d) a battery torch
30. 30.🌐 A weather station sends one reading every 5 seconds. How many readings does it send in 1 minute?
31. 31.🌐 Each reading a sensor sends is 20 bytes. How many bytes do 30 readings take?
32. 32.🌐 Each reading a sensor sends is 25 bytes. How many bytes do 120 readings take?
33. 33.🌐 A weather station sends one reading every 10 seconds. How many readings does it send in 1 minute?
34. 34.🌐 Is a wind-up clock an IoT device? (a) not an IoT device (b) an IoT device
35. 35.🔢 To get a sensor reading onto a phone, what comes right after “it is sent by Wi-Fi”? (a) the sensor measures (b) the board reads it (c) the app shows it (d) the cloud stores it
36. 36.🌐 In an IoT system, which part acts on a command? (a) sensor (b) Wi-Fi (c) actuator (d) phone app
37. 37.🌐 A soil sensor sends a reading to an app every 15 minutes. How many readings arrive in 6 hours?
38. 38.🌐 Is a paper calendar an IoT device? (a) not an IoT device (b) an IoT device
39. 39.🌐 Is a plain wall switch an IoT device? (a) an IoT device (b) not an IoT device
40. 40.🔍 Which is the odd one out? (a) a pencil sharpener (b) a smart energy meter (c) a Wi-Fi doorbell camera (d) a fitness band with app

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