Electronics Worksheet: What Is IoT

Electronics lesson 27: What is IoT? · Set 3 · 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.🌐 In an IoT system, which part stores data online? (a) actuator (b) microcontroller (c) cloud server (d) Wi-Fi
2. 2.What does the cloud server do? (a) acts on a command (b) reads values, decides (c) stores data online (d) measures the real world
3. 3.🌐 A weather station sends one reading every 10 seconds. How many readings does it send in 3 minutes?
4. 4.🔍 Which is the odd one out? (a) a fitness band with app (b) a wind-up clock (c) a plain wall switch (d) a plain table fan
5. 5.🌐 Is an app-controlled bulb an IoT device? (a) an IoT device (b) not an IoT device
6. 6.🔢 To get a sensor reading onto a phone, what comes right after “the board reads it”? (a) the cloud stores it (b) the sensor measures (c) it is sent by Wi-Fi (d) the app shows it
7. 7.🌐 In an IoT system, which part shows data to you? (a) Wi-Fi (b) cloud server (c) phone app (d) sensor
8. 8.🔍 Which is the odd one out? (a) a pencil sharpener (b) a Wi-Fi weather station (c) a plain table fan (d) a battery torch
9. 9.🌐 In an IoT system, which part carries the data? (a) microcontroller (b) Wi-Fi (c) phone app (d) cloud server
10. 10.🔍 Which is the odd one out? (a) a plain table fan (b) a Wi-Fi doorbell camera (c) a smart energy meter (d) a fitness band with app
11. 11.Which of these is not an IoT device? (a) a Wi-Fi weather station (b) a smart energy meter (c) a Wi-Fi smart plug (d) a plain table fan
12. 12.🔍 Which is the odd one out? (a) a wind-up clock (b) a Wi-Fi weather station (c) a smart energy meter (d) a Wi-Fi doorbell camera
13. 13.🌐 A weather station sends one reading every 20 seconds. How many readings does it send in 3 minutes?
14. 14.🔍 Which is the odd one out? (a) a wind-up clock (b) an app-controlled bulb (c) a paper calendar (d) a pencil sharpener
15. 15.🌐 Is a wind-up clock 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 hand fan (d) a candle in a jar
17. 17.Which of these is an IoT device? (a) a battery torch (b) a Wi-Fi smart plug (c) a plain wall switch (d) a wind-up clock
18. 18.🌐 Each reading a sensor sends is 50 bytes. How many bytes do 170 readings take?
19. 19.🔍 Which is the odd one out? (a) a plain wall switch (b) a Wi-Fi smart plug (c) a wind-up clock (d) a plain table fan
20. 20.🔍 Which is the odd one out? (a) a Wi-Fi smart plug (b) a battery torch (c) a Wi-Fi weather station (d) an app-controlled bulb
21. 21.What does the actuator do? (a) carries the data (b) acts on a command (c) stores data online (d) reads values, decides
22. 22.🌐 In an IoT system, which part measures the real world? (a) microcontroller (b) cloud server (c) sensor (d) actuator
23. 23.🔢 To get a sensor reading onto a phone, what comes right after “the sensor measures”? (a) it is sent by Wi-Fi (b) the cloud stores it (c) the app shows it (d) the board reads it
24. 24.What does the phone app do? (a) stores data online (b) measures the real world (c) reads values, decides (d) shows data to you
25. 25.🔢 To get a sensor reading onto a phone, which comes first: “the sensor measures” or “it is sent by Wi-Fi”? (a) it is sent by Wi-Fi (b) the sensor measures
26. 26.What does the sensor do? (a) shows data to you (b) carries the data (c) measures the real world (d) stores data online
27. 27.🌐 A soil sensor sends a reading to an app every 30 minutes. How many readings arrive in 1 hour?
28. 28.🌐 A soil sensor sends a reading to an app every 15 minutes. How many readings arrive in 1 hour?
29. 29.🔢 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
30. 30.🌐 Is a fitness band with app an IoT device? (a) not an IoT device (b) an IoT device
31. 31.🌐 Is a Wi-Fi doorbell camera an IoT device? (a) not an IoT device (b) an IoT device
32. 32.🔍 Which is the odd one out? (a) a Wi-Fi doorbell camera (b) a battery torch (c) a wind-up clock (d) a pencil sharpener
33. 33.🌐 In an IoT system, which part reads values, decides? (a) actuator (b) sensor (c) cloud server (d) microcontroller
34. 34.🌐 Each reading a sensor sends is 25 bytes. How many bytes do 100 readings take?
35. 35.🌐 Is a battery torch an IoT device? (a) not an IoT device (b) an IoT device
36. 36.🌐 A soil sensor sends a reading to an app every 30 minutes. How many readings arrive in 3 hours?
37. 37.🔢 To get a sensor reading onto a phone, which comes first: “the sensor measures” or “the board reads it”? (a) the board reads it (b) the sensor measures
38. 38.🔢 To get a sensor reading onto a phone, which comes first: “the sensor measures” or “the cloud stores it”? (a) the cloud stores it (b) the sensor measures
39. 39.🔢 To get a sensor reading onto a phone, which is the LAST step? (a) the sensor measures (b) the board reads it (c) it is sent by Wi-Fi (d) the app shows it
40. 40.🌐 A weather station sends one reading every 5 seconds. How many readings does it send in 6 minutes?

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