Electronics Worksheet: What Is IoT

Electronics lesson 27: What is IoT? · Set 166 · 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 7 minutes?
2. 2.🌐 A soil sensor sends a reading to an app every 5 minutes. How many readings arrive in 6 hours?
3. 3.🔍 Which is the odd one out? (a) a Wi-Fi weather station (b) a plain wall switch (c) a battery torch (d) a pencil sharpener
4. 4.🔍 Which is the odd one out? (a) a Wi-Fi doorbell camera (b) a fitness band with app (c) a Wi-Fi smart plug (d) a battery torch
5. 5.🌐 Is a Wi-Fi doorbell camera an IoT device? (a) not an IoT device (b) an IoT device
6. 6.What does the actuator do? (a) carries the data (b) measures the real world (c) shows data to you (d) acts on a command
7. 7.🌐 How does a home IoT device usually send its data to the app? (a) over Wi-Fi (b) by shouting (c) by post (d) through a candle
8. 8.🔢 To get a sensor reading onto a phone, what comes right after “the sensor measures”? (a) the cloud stores it (b) it is sent by Wi-Fi (c) the board reads it (d) the app shows it
9. 9.🌐 In an IoT system, which part reads values, decides? (a) microcontroller (b) Wi-Fi (c) sensor (d) actuator
10. 10.What does the microcontroller do? (a) shows data to you (b) acts on a command (c) stores data online (d) reads values, decides
11. 11.What does the cloud server do? (a) reads values, decides (b) carries the data (c) measures the real world (d) stores data online
12. 12.🔢 To get a sensor reading onto a phone, which is the FIRST step? (a) the app shows it (b) it is sent by Wi-Fi (c) the sensor measures (d) the board reads it
13. 13.🔢 To get a sensor reading onto a phone, what comes right after “the board reads it”? (a) it is sent by Wi-Fi (b) the sensor measures (c) the app shows it (d) the cloud stores it
14. 14.🌐 Is a wind-up clock an IoT device? (a) an IoT device (b) not an IoT device
15. 15.🌐 Each reading a sensor sends is 25 bytes. How many bytes do 70 readings take?
16. 16.🌐 Each reading a sensor sends is 50 bytes. How many bytes do 150 readings take?
17. 17.🌐 Is a Wi-Fi smart plug an IoT device? (a) an IoT device (b) not an IoT device
18. 18.🌐 Each reading a sensor sends is 20 bytes. How many bytes do 40 readings take?
19. 19.What does the phone app do? (a) shows data to you (b) carries the data (c) reads values, decides (d) acts on a command
20. 20.🔢 To get a sensor reading onto a phone, which comes first: “the board reads it” or “the app shows it”? (a) the app shows it (b) the board reads it
21. 21.🔍 Which is the odd one out? (a) a smart energy meter (b) a fitness band with app (c) a Wi-Fi doorbell camera (d) a wind-up clock
22. 22.🌐 A soil sensor sends a reading to an app every 5 minutes. How many readings arrive in 2 hours?
23. 23.Which of these is not an IoT device? (a) a Wi-Fi weather station (b) a fitness band with app (c) an app-controlled bulb (d) a battery torch
24. 24.🔍 Which is the odd one out? (a) a Wi-Fi smart plug (b) a Wi-Fi doorbell camera (c) a pencil sharpener (d) a smart energy meter
25. 25.Which of these is not an IoT device? (a) a fitness band with app (b) a Wi-Fi smart plug (c) a Wi-Fi doorbell camera (d) a paper calendar
26. 26.🔢 To get a sensor reading onto a phone, which comes first: “the cloud stores it” or “the board reads it”? (a) the cloud stores it (b) the board reads it
27. 27.🔍 Which is the odd one out? (a) a plain table fan (b) a Wi-Fi weather station (c) a Wi-Fi smart plug (d) a Wi-Fi doorbell camera
28. 28.🌐 A soil sensor sends a reading to an app every 10 minutes. How many readings arrive in 6 hours?
29. 29.🌐 A soil sensor sends a reading to an app every 5 minutes. How many readings arrive in 4 hours?
30. 30.🌐 A soil sensor sends a reading to an app every 10 minutes. How many readings arrive in 5 hours?
31. 31.Which of these is an IoT device? (a) a wind-up clock (b) a battery torch (c) a smart energy meter (d) a plain table fan
32. 32.🔢 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
33. 33.🌐 Is a smart energy meter an IoT device? (a) an IoT device (b) not an IoT device
34. 34.🔢 To get a sensor reading onto a phone, which comes first: “the app shows it” or “the board reads it”? (a) the board reads it (b) the app shows it
35. 35.🔍 Which is the odd one out? (a) a plain wall switch (b) a Wi-Fi doorbell camera (c) a fitness band with app (d) a Wi-Fi weather station
36. 36.🔍 Which is the odd one out? (a) a Wi-Fi smart plug (b) a plain wall switch (c) a plain table fan (d) a wind-up clock
37. 37.🔢 To get a sensor reading onto a phone, which comes first: “the sensor measures” or “the app shows it”? (a) the sensor measures (b) the app shows it
38. 38.Which of these is not an IoT device? (a) a Wi-Fi smart plug (b) a Wi-Fi doorbell camera (c) an app-controlled bulb (d) a plain wall switch
39. 39.🔢 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
40. 40.🌐 A weather station sends one reading every 10 seconds. How many readings does it send in 8 minutes?

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