Electronics Worksheet: What Is IoT

Electronics lesson 27: What is IoT? · Set 630 · 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.What does the sensor do? (a) reads values, decides (b) measures the real world (c) carries the data (d) stores data online
2. 2.🌐 A soil sensor sends a reading to an app every 20 minutes. How many readings arrive in 2 hours?
3. 3.🔍 Which is the odd one out? (a) a Wi-Fi doorbell camera (b) a plain wall switch (c) a Wi-Fi smart plug (d) a smart energy meter
4. 4.Which of these is not an IoT device? (a) a plain wall switch (b) an app-controlled bulb (c) a Wi-Fi smart plug (d) a smart energy meter
5. 5.Which of these is not an IoT device? (a) an app-controlled bulb (b) a Wi-Fi smart plug (c) a wind-up clock (d) a smart energy meter
6. 6.What does the actuator do? (a) carries the data (b) shows data to you (c) measures the real world (d) acts on a command
7. 7.🌐 In an IoT system, which part measures the real world? (a) cloud server (b) microcontroller (c) Wi-Fi (d) sensor
8. 8.🌐 Is a paper calendar an IoT device? (a) not an IoT device (b) an IoT device
9. 9.🌐 In an IoT system, which part stores data online? (a) Wi-Fi (b) cloud server (c) microcontroller (d) sensor
10. 10.Which of these is not an IoT device? (a) a Wi-Fi weather station (b) a Wi-Fi doorbell camera (c) a battery torch (d) a Wi-Fi smart plug
11. 11.🔍 Which is the odd one out? (a) a plain wall switch (b) a pencil sharpener (c) a Wi-Fi smart plug (d) a paper calendar
12. 12.🔢 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
13. 13.🔍 Which is the odd one out? (a) a plain wall switch (b) a battery torch (c) a paper calendar (d) a fitness band with app
14. 14.Which of these is an IoT device? (a) a plain table fan (b) a Wi-Fi smart plug (c) a plain wall switch (d) a paper calendar
15. 15.🌐 Is a battery torch an IoT device? (a) not an IoT device (b) an IoT device
16. 16.🏠 Which is a smart-home example? (a) a printed map (b) lights on from an app (c) a candle in a jar (d) a hand fan
17. 17.🌐 A weather station sends one reading every 30 seconds. How many readings does it send in 8 minutes?
18. 18.🔍 Which is the odd one out? (a) a plain wall switch (b) a wind-up clock (c) a Wi-Fi weather station (d) a paper calendar
19. 19.🌐 Each reading a sensor sends is 20 bytes. How many bytes do 130 readings take?
20. 20.🌐 In an IoT system, which part shows data to you? (a) actuator (b) phone app (c) cloud server (d) sensor
21. 21.🔍 Which is the odd one out? (a) a plain wall switch (b) a smart energy meter (c) a battery torch (d) a paper calendar
22. 22.🌐 A soil sensor sends a reading to an app every 10 minutes. How many readings arrive in 2 hours?
23. 23.🔍 Which is the odd one out? (a) a Wi-Fi doorbell camera (b) a plain table fan (c) a Wi-Fi smart plug (d) a fitness band with app
24. 24.🌐 Is a plain table fan an IoT device? (a) an IoT device (b) not an IoT device
25. 25.Which of these is an IoT device? (a) a fitness band with app (b) a plain table fan (c) a plain wall switch (d) a wind-up clock
26. 26.Which of these is an IoT device? (a) a battery torch (b) a Wi-Fi weather station (c) a pencil sharpener (d) a paper calendar
27. 27.🌐 Is an app-controlled bulb an IoT device? (a) an IoT device (b) not an IoT device
28. 28.🌐 A soil sensor sends a reading to an app every 30 minutes. How many readings arrive in 1 hour?
29. 29.🔢 To get a sensor reading onto a phone, what comes right after “the board reads it”? (a) the app shows it (b) it is sent by Wi-Fi (c) the cloud stores it (d) the sensor measures
30. 30.Which of these is an IoT device? (a) a wind-up clock (b) a plain table fan (c) a smart energy meter (d) a battery torch
31. 31.🌐 Each reading a sensor sends is 25 bytes. How many bytes do 180 readings take?
32. 32.🌐 A soil sensor sends a reading to an app every 30 minutes. How many readings arrive in 6 hours?
33. 33.🌐 A soil sensor sends a reading to an app every 30 minutes. How many readings arrive in 3 hours?
34. 34.🌐 Is a plain wall switch an IoT device? (a) an IoT device (b) not an IoT device
35. 35.🌐 In an IoT system, which part acts on a command? (a) actuator (b) cloud server (c) phone app (d) microcontroller
36. 36.🔢 To get a sensor reading onto a phone, which comes first: “the board reads it” or “the sensor measures”? (a) the board reads it (b) the sensor measures
37. 37.What does the cloud server do? (a) acts on a command (b) measures the real world (c) carries the data (d) stores data online
38. 38.Which of these is an IoT device? (a) a battery torch (b) an app-controlled bulb (c) a wind-up clock (d) a pencil sharpener
39. 39.🌐 How does a home IoT device usually send its data to the app? (a) by post (b) over Wi-Fi (c) through a candle (d) by shouting
40. 40.Which of these is not an IoT device? (a) an app-controlled bulb (b) a smart energy meter (c) a paper calendar (d) a Wi-Fi weather station

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