Electronics Worksheet: What Is IoT

Electronics lesson 27: What is IoT? · Set 702 · 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 20 minutes. How many readings arrive in 5 hours?
2. 2.🌐 A soil sensor sends a reading to an app every 10 minutes. How many readings arrive in 3 hours?
3. 3.🌐 In an IoT system, which part measures the real world? (a) actuator (b) sensor (c) microcontroller (d) cloud server
4. 4.🔢 To get a sensor reading onto a phone, what comes right after “the cloud stores it”? (a) it is sent by Wi-Fi (b) the sensor measures (c) the app shows it (d) the board reads it
5. 5.🌐 How does a home IoT device usually send its data to the app? (a) by post (b) through a candle (c) over Wi-Fi (d) by shouting
6. 6.What does the Wi-Fi link do? (a) shows data to you (b) measures the real world (c) acts on a command (d) carries the data
7. 7.🔍 Which is the odd one out? (a) an app-controlled bulb (b) a Wi-Fi smart plug (c) a fitness band with app (d) a battery torch
8. 8.🔢 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 cloud stores it (d) the app shows it
9. 9.🔍 Which is the odd one out? (a) a Wi-Fi doorbell camera (b) a pencil sharpener (c) a fitness band with app (d) a smart energy meter
10. 10.Which of these is not an IoT device? (a) a Wi-Fi weather station (b) a Wi-Fi doorbell camera (c) a fitness band with app (d) a paper calendar
11. 11.🌐 Is a smart energy meter an IoT device? (a) an IoT device (b) not an IoT device
12. 12.🌐 In an IoT system, which part shows data to you? (a) cloud server (b) sensor (c) Wi-Fi (d) phone app
13. 13.🌐 Is a plain table fan an IoT device? (a) an IoT device (b) not an IoT device
14. 14.🌐 In an IoT system, which part reads values, decides? (a) Wi-Fi (b) sensor (c) microcontroller (d) phone app
15. 15.🔢 To get a sensor reading onto a phone, which is the LAST step? (a) the board reads it (b) the cloud stores it (c) the app shows it (d) it is sent by Wi-Fi
16. 16.🔍 Which is the odd one out? (a) a wind-up clock (b) a paper calendar (c) a plain wall switch (d) a Wi-Fi doorbell camera
17. 17.🔢 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
18. 18.🌐 In an IoT system, which part carries the data? (a) phone app (b) actuator (c) Wi-Fi (d) microcontroller
19. 19.🌐 Is a wind-up clock an IoT device? (a) an IoT device (b) not an IoT device
20. 20.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 doorbell camera
21. 21.🌐 A weather station sends one reading every 5 seconds. How many readings does it send in 3 minutes?
22. 22.🌐 A weather station sends one reading every 30 seconds. How many readings does it send in 4 minutes?
23. 23.Which of these is not an IoT device? (a) a smart energy meter (b) a Wi-Fi weather station (c) a Wi-Fi smart plug (d) a wind-up clock
24. 24.🌐 Each reading a sensor sends is 10 bytes. How many bytes do 170 readings take?
25. 25.🏠 Which is a smart-home example? (a) a hand fan (b) lights on from an app (c) a candle in a jar (d) a printed map
26. 26.🔍 Which is the odd one out? (a) a pencil sharpener (b) a paper calendar (c) a Wi-Fi smart plug (d) a wind-up clock
27. 27.🌐 A weather station sends one reading every 15 seconds. How many readings does it send in 2 minutes?
28. 28.🌐 A weather station sends one reading every 5 seconds. How many readings does it send in 1 minute?
29. 29.🌐 A weather station sends one reading every 5 seconds. How many readings does it send in 6 minutes?
30. 30.🌐 Each reading a sensor sends is 10 bytes. How many bytes do 70 readings take?
31. 31.🔢 To get a sensor reading onto a phone, which is the FIRST step? (a) the cloud stores it (b) the sensor measures (c) it is sent by Wi-Fi (d) the board reads it
32. 32.🌐 A weather station sends one reading every 5 seconds. How many readings does it send in 4 minutes?
33. 33.🔍 Which is the odd one out? (a) a Wi-Fi doorbell camera (b) an app-controlled bulb (c) a plain table fan (d) a Wi-Fi smart plug
34. 34.🌐 Is a Wi-Fi smart plug an IoT device? (a) not an IoT device (b) an IoT device
35. 35.🌐 A soil sensor sends a reading to an app every 15 minutes. How many readings arrive in 5 hours?
36. 36.What does the sensor do? (a) measures the real world (b) carries the data (c) shows data to you (d) acts on a command
37. 37.🌐 In an IoT system, which part stores data online? (a) actuator (b) microcontroller (c) cloud server (d) sensor
38. 38.🌐 Is an app-controlled bulb an IoT device? (a) an IoT device (b) not an IoT device
39. 39.🌐 A weather station sends one reading every 10 seconds. How many readings does it send in 6 minutes?
40. 40.Which of these is not an IoT device? (a) a Wi-Fi smart plug (b) an app-controlled bulb (c) a fitness band with app (d) a battery torch

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