Electronics Worksheet: What Is IoT

Electronics lesson 27: What is IoT? · Set 427 · 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 10 minutes. How many readings arrive in 4 hours?
2. 2.🌐 Is an app-controlled bulb an IoT device? (a) an IoT device (b) not an IoT device
3. 3.🔢 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
4. 4.🌐 In an IoT system, which part acts on a command? (a) sensor (b) Wi-Fi (c) microcontroller (d) actuator
5. 5.🌐 What does IoT stand for? (a) Internet of Talk (b) Inside of Toys (c) Internet of Things (d) Input of Tools
6. 6.🌐 A weather station sends one reading every 30 seconds. How many readings does it send in 8 minutes?
7. 7.🌐 In an IoT system, which part carries the data? (a) cloud server (b) phone app (c) actuator (d) Wi-Fi
8. 8.🌐 In an IoT system, which part measures the real world? (a) microcontroller (b) cloud server (c) sensor (d) Wi-Fi
9. 9.🔍 Which is the odd one out? (a) a plain wall switch (b) a Wi-Fi doorbell camera (c) a plain table fan (d) a wind-up clock
10. 10.🌐 Is a Wi-Fi doorbell camera an IoT device? (a) not an IoT device (b) an IoT device
11. 11.Which of these is an IoT device? (a) a wind-up clock (b) a battery torch (c) an app-controlled bulb (d) a plain wall switch
12. 12.🔢 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
13. 13.🔢 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
14. 14.What does the actuator do? (a) acts on a command (b) shows data to you (c) stores data online (d) reads values, decides
15. 15.🌐 Each reading a sensor sends is 50 bytes. How many bytes do 60 readings take?
16. 16.Which of these is an IoT device? (a) a wind-up clock (b) a paper calendar (c) a plain wall switch (d) a Wi-Fi smart plug
17. 17.What does the cloud server do? (a) stores data online (b) acts on a command (c) measures the real world (d) shows data to you
18. 18.🌐 A weather station sends one reading every 60 seconds. How many readings does it send in 3 minutes?
19. 19.🔍 Which is the odd one out? (a) a Wi-Fi smart plug (b) a pencil sharpener (c) an app-controlled bulb (d) a Wi-Fi doorbell camera
20. 20.🔢 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
21. 21.🏠 Which is a smart-home example? (a) a candle in a jar (b) a printed map (c) a hand fan (d) lights on from an app
22. 22.🌐 Each reading a sensor sends is 10 bytes. How many bytes do 30 readings take?
23. 23.Which of these is an IoT device? (a) a plain wall switch (b) a battery torch (c) a pencil sharpener (d) a Wi-Fi weather station
24. 24.Which of these is an IoT device? (a) a fitness band with app (b) a plain wall switch (c) a pencil sharpener (d) a wind-up clock
25. 25.🌐 Each reading a sensor sends is 20 bytes. How many bytes do 150 readings take?
26. 26.What does the microcontroller do? (a) measures the real world (b) carries the data (c) shows data to you (d) reads values, decides
27. 27.🌐 A soil sensor sends a reading to an app every 30 minutes. How many readings arrive in 5 hours?
28. 28.What does the Wi-Fi link do? (a) reads values, decides (b) shows data to you (c) acts on a command (d) carries the data
29. 29.Which of these is not an IoT device? (a) an app-controlled bulb (b) a Wi-Fi doorbell camera (c) a smart energy meter (d) a battery torch
30. 30.🔍 Which is the odd one out? (a) a plain table fan (b) a smart energy meter (c) a wind-up clock (d) a plain wall switch
31. 31.🌐 Is a plain table fan an IoT device? (a) not an IoT device (b) an IoT device
32. 32.🌐 Each reading a sensor sends is 50 bytes. How many bytes do 180 readings take?
33. 33.What does the sensor do? (a) shows data to you (b) carries the data (c) measures the real world (d) stores data online
34. 34.🔢 To get a sensor reading onto a phone, what comes right after “it is sent by Wi-Fi”? (a) the board reads it (b) the cloud stores it (c) the app shows it (d) the sensor measures
35. 35.🌐 In an IoT system, which part stores data online? (a) Wi-Fi (b) cloud server (c) actuator (d) phone app
36. 36.🌐 A soil sensor sends a reading to an app every 15 minutes. How many readings arrive in 5 hours?
37. 37.What does the phone app do? (a) acts on a command (b) shows data to you (c) measures the real world (d) carries the data
38. 38.🌐 Is a pencil sharpener an IoT device? (a) an IoT device (b) not an IoT device
39. 39.🌐 A soil sensor sends a reading to an app every 5 minutes. How many readings arrive in 3 hours?
40. 40.🌐 Each reading a sensor sends is 20 bytes. How many bytes do 20 readings take?

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