Electronics Worksheet: What Is IoT

Electronics lesson 27: What is IoT? · Set 819 · 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 weather station sends one reading every 10 seconds. How many readings does it send in 2 minutes?
2. 2.🔍 Which is the odd one out? (a) a battery torch (b) a plain table fan (c) a wind-up clock (d) a Wi-Fi weather station
3. 3.🌐 How does a home IoT device usually send its data to the app? (a) through a candle (b) by shouting (c) over Wi-Fi (d) by post
4. 4.What does the cloud server do? (a) stores data online (b) measures the real world (c) acts on a command (d) shows data to you
5. 5.🌐 Is a wind-up clock an IoT device? (a) not an IoT device (b) an IoT device
6. 6.🔢 To get a sensor reading onto a phone, what comes right after “the sensor measures”? (a) the board reads it (b) the app shows it (c) the cloud stores it (d) it is sent by Wi-Fi
7. 7.🔍 Which is the odd one out? (a) a plain wall switch (b) a pencil sharpener (c) a paper calendar (d) an app-controlled bulb
8. 8.🔍 Which is the odd one out? (a) a fitness band with app (b) a battery torch (c) a plain wall switch (d) a paper calendar
9. 9.🔢 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) the app shows it (d) it is sent by Wi-Fi
10. 10.🌐 In an IoT system, which part reads values, decides? (a) actuator (b) microcontroller (c) phone app (d) cloud server
11. 11.Which of these is an IoT device? (a) a plain table fan (b) a plain wall switch (c) a battery torch (d) a Wi-Fi weather station
12. 12.🌐 Each reading a sensor sends is 25 bytes. How many bytes do 50 readings take?
13. 13.🔢 To get a sensor reading onto a phone, which is the FIRST step? (a) it is sent by Wi-Fi (b) the cloud stores it (c) the app shows it (d) the sensor measures
14. 14.🌐 Is a paper calendar an IoT device? (a) an IoT device (b) not an IoT device
15. 15.🔍 Which is the odd one out? (a) a smart energy meter (b) a battery torch (c) a pencil sharpener (d) a plain wall switch
16. 16.🔢 To get a sensor reading onto a phone, what comes right after “the cloud stores it”? (a) the board reads it (b) the sensor measures (c) the app shows it (d) it is sent by Wi-Fi
17. 17.What does the sensor do? (a) acts on a command (b) stores data online (c) measures the real world (d) shows data to you
18. 18.Which of these is an IoT device? (a) a pencil sharpener (b) a Wi-Fi doorbell camera (c) a battery torch (d) a wind-up clock
19. 19.🌐 In an IoT system, which part carries the data? (a) Wi-Fi (b) microcontroller (c) actuator (d) phone app
20. 20.🌐 Is a plain table fan an IoT device? (a) an IoT device (b) not an IoT device
21. 21.What does the Wi-Fi link do? (a) acts on a command (b) shows data to you (c) carries the data (d) measures the real world
22. 22.Which of these is an IoT device? (a) a plain table fan (b) a pencil sharpener (c) a paper calendar (d) a smart energy meter
23. 23.🌐 In an IoT system, which part stores data online? (a) Wi-Fi (b) sensor (c) cloud server (d) microcontroller
24. 24.🔍 Which is the odd one out? (a) a Wi-Fi weather station (b) a Wi-Fi smart plug (c) a paper calendar (d) a fitness band with app
25. 25.🌐 Each reading a sensor sends is 25 bytes. How many bytes do 180 readings take?
26. 26.What does the microcontroller do? (a) carries the data (b) measures the real world (c) stores data online (d) reads values, decides
27. 27.🌐 Is a battery torch an IoT device? (a) an IoT device (b) not an IoT device
28. 28.🌐 A weather station sends one reading every 60 seconds. How many readings does it send in 1 minute?
29. 29.🌐 A soil sensor sends a reading to an app every 15 minutes. How many readings arrive in 2 hours?
30. 30.Which of these is an IoT device? (a) a plain wall switch (b) a pencil sharpener (c) a plain table fan (d) an app-controlled bulb
31. 31.🌐 A soil sensor sends a reading to an app every 20 minutes. How many readings arrive in 4 hours?
32. 32.🌐 A weather station sends one reading every 5 seconds. How many readings does it send in 3 minutes?
33. 33.🌐 Is a fitness band with app an IoT device? (a) an IoT device (b) not an IoT device
34. 34.🌐 A soil sensor sends a reading to an app every 30 minutes. How many readings arrive in 2 hours?
35. 35.🌐 A weather station sends one reading every 5 seconds. How many readings does it send in 5 minutes?
36. 36.Which of these is an IoT device? (a) a wind-up clock (b) a Wi-Fi smart plug (c) a plain wall switch (d) a battery torch
37. 37.🔢 To get a sensor reading onto a phone, which comes first: “the app shows it” or “the sensor measures”? (a) the sensor measures (b) the app shows it
38. 38.Which of these is not an IoT device? (a) a smart energy meter (b) a Wi-Fi smart plug (c) a Wi-Fi doorbell camera (d) a plain wall switch
39. 39.🌐 Is a Wi-Fi doorbell camera an IoT device? (a) not an IoT device (b) an IoT device
40. 40.What does the phone app do? (a) shows data to you (b) acts on a command (c) carries the data (d) stores data online

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