Electronics Worksheet: What Is IoT

Electronics lesson 27: What is IoT? · Set 948 · 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.🔢 To get a sensor reading onto a phone, which is the FIRST step? (a) the board reads it (b) the sensor measures (c) the app shows it (d) it is sent by Wi-Fi
2. 2.🏠 Which is a smart-home example? (a) lights on from an app (b) a hand fan (c) a candle in a jar (d) a printed map
3. 3.🔍 Which is the odd one out? (a) a Wi-Fi smart plug (b) a fitness band with app (c) a wind-up clock (d) a Wi-Fi doorbell camera
4. 4.🌐 Is an app-controlled bulb an IoT device? (a) not an IoT device (b) an IoT device
5. 5.🌐 Is a fitness band with app an IoT device? (a) not an IoT device (b) an IoT device
6. 6.🌐 A soil sensor sends a reading to an app every 15 minutes. How many readings arrive in 2 hours?
7. 7.Which of these is not an IoT device? (a) a plain wall switch (b) a smart energy meter (c) a Wi-Fi doorbell camera (d) a Wi-Fi weather station
8. 8.Which of these is not an IoT device? (a) a smart energy meter (b) an app-controlled bulb (c) a wind-up clock (d) a Wi-Fi weather station
9. 9.Which of these is not an IoT device? (a) a Wi-Fi doorbell camera (b) an app-controlled bulb (c) a smart energy meter (d) a plain table fan
10. 10.🔢 To get a sensor reading onto a phone, which comes first: “the sensor measures” or “it is sent by Wi-Fi”? (a) the sensor measures (b) it is sent by Wi-Fi
11. 11.🌐 In an IoT system, which part acts on a command? (a) microcontroller (b) actuator (c) sensor (d) Wi-Fi
12. 12.Which of these is an IoT device? (a) a plain wall switch (b) a Wi-Fi doorbell camera (c) a paper calendar (d) a battery torch
13. 13.🔍 Which is the odd one out? (a) a fitness band with app (b) a Wi-Fi doorbell camera (c) a Wi-Fi weather station (d) a battery torch
14. 14.🌐 Is a battery torch an IoT device? (a) not an IoT device (b) an IoT device
15. 15.🌐 Is a smart energy meter an IoT device? (a) an IoT device (b) not an IoT device
16. 16.What does the sensor do? (a) stores data online (b) carries the data (c) measures the real world (d) acts on a command
17. 17.🌐 Is a wind-up clock an IoT device? (a) not an IoT device (b) an IoT device
18. 18.🔍 Which is the odd one out? (a) a plain wall switch (b) a plain table fan (c) a wind-up clock (d) an app-controlled bulb
19. 19.🔢 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
20. 20.What does the phone app do? (a) reads values, decides (b) stores data online (c) carries the data (d) shows data to you
21. 21.🌐 A weather station sends one reading every 20 seconds. How many readings does it send in 3 minutes?
22. 22.🌐 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
23. 23.🌐 Each reading a sensor sends is 10 bytes. How many bytes do 130 readings take?
24. 24.🌐 Each reading a sensor sends is 20 bytes. How many bytes do 30 readings take?
25. 25.🌐 A weather station sends one reading every 20 seconds. How many readings does it send in 5 minutes?
26. 26.🌐 Each reading a sensor sends is 25 bytes. How many bytes do 130 readings take?
27. 27.🌐 In an IoT system, which part measures the real world? (a) sensor (b) actuator (c) microcontroller (d) Wi-Fi
28. 28.Which of these is an IoT device? (a) a plain wall switch (b) a battery torch (c) a pencil sharpener (d) a Wi-Fi smart plug
29. 29.🔍 Which is the odd one out? (a) a battery torch (b) a smart energy meter (c) a plain table fan (d) a wind-up clock
30. 30.🌐 Is a Wi-Fi smart plug an IoT device? (a) an IoT device (b) not an IoT device
31. 31.🔢 To get a sensor reading onto a phone, what comes right after “the sensor measures”? (a) the app shows it (b) it is sent by Wi-Fi (c) the board reads it (d) the cloud stores it
32. 32.Which of these is an IoT device? (a) a pencil sharpener (b) a smart energy meter (c) a wind-up clock (d) a plain wall switch
33. 33.🌐 Is a paper calendar an IoT device? (a) an IoT device (b) not an IoT device
34. 34.Which of these is not an IoT device? (a) an app-controlled bulb (b) a Wi-Fi doorbell camera (c) a fitness band with app (d) a paper calendar
35. 35.🌐 Each reading a sensor sends is 25 bytes. How many bytes do 200 readings take?
36. 36.🌐 A weather station sends one reading every 5 seconds. How many readings does it send in 6 minutes?
37. 37.🌐 Each reading a sensor sends is 25 bytes. How many bytes do 190 readings take?
38. 38.What does the microcontroller do? (a) stores data online (b) reads values, decides (c) shows data to you (d) measures the real world
39. 39.🌐 Each reading a sensor sends is 20 bytes. How many bytes do 130 readings take?
40. 40.🔢 To get a sensor reading onto a phone, which comes first: “the sensor measures” or “the app shows it”? (a) the app shows it (b) the sensor measures

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