Electronics Worksheet: What Is IoT

Electronics lesson 27: What is IoT? · Set 143 · 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 30 seconds. How many readings does it send in 9 minutes?
2. 2.🌐 In an IoT system, which part measures the real world? (a) microcontroller (b) sensor (c) phone app (d) Wi-Fi
3. 3.🔍 Which is the odd one out? (a) a Wi-Fi smart plug (b) a wind-up clock (c) a Wi-Fi weather station (d) a smart energy meter
4. 4.🔍 Which is the odd one out? (a) a Wi-Fi weather station (b) a battery torch (c) a smart energy meter (d) a Wi-Fi smart plug
5. 5.🌐 In an IoT system, which part stores data online? (a) sensor (b) phone app (c) actuator (d) cloud server
6. 6.🌐 Is a Wi-Fi doorbell camera an IoT device? (a) an IoT device (b) not an IoT device
7. 7.🌐 How does a home IoT device usually send its data to the app? (a) by shouting (b) by post (c) through a candle (d) over Wi-Fi
8. 8.🔢 To get a sensor reading onto a phone, which is the LAST step? (a) the app shows it (b) it is sent by Wi-Fi (c) the sensor measures (d) the cloud stores it
9. 9.🌐 Is a pencil sharpener an IoT device? (a) an IoT device (b) not an IoT device
10. 10.🌐 Each reading a sensor sends is 10 bytes. How many bytes do 170 readings take?
11. 11.🌐 Is a smart energy meter an IoT device? (a) an IoT device (b) not an IoT device
12. 12.What does the cloud server do? (a) acts on a command (b) measures the real world (c) stores data online (d) shows data to you
13. 13.🔍 Which is the odd one out? (a) a plain table fan (b) a smart energy meter (c) a fitness band with app (d) a Wi-Fi doorbell camera
14. 14.🌐 A soil sensor sends a reading to an app every 20 minutes. How many readings arrive in 3 hours?
15. 15.🌐 Is an app-controlled bulb an IoT device? (a) not an IoT device (b) an IoT device
16. 16.What does the phone app do? (a) carries the data (b) measures the real world (c) acts on a command (d) shows data to you
17. 17.Which of these is not an IoT device? (a) an app-controlled bulb (b) a Wi-Fi doorbell camera (c) a Wi-Fi weather station (d) a paper calendar
18. 18.🔍 Which is the odd one out? (a) a plain wall switch (b) an app-controlled bulb (c) a fitness band with app (d) a smart energy meter
19. 19.Which of these is not an IoT device? (a) a smart energy meter (b) a Wi-Fi smart plug (c) a plain wall switch (d) a Wi-Fi weather station
20. 20.🌐 A weather station sends one reading every 20 seconds. How many readings does it send in 9 minutes?
21. 21.🌐 Is a paper calendar an IoT device? (a) not an IoT device (b) an IoT device
22. 22.Which of these is not an IoT device? (a) a Wi-Fi doorbell camera (b) a Wi-Fi smart plug (c) an app-controlled bulb (d) a wind-up clock
23. 23.Which of these is an IoT device? (a) an app-controlled bulb (b) a battery torch (c) a pencil sharpener (d) a wind-up clock
24. 24.Which of these is not an IoT device? (a) a Wi-Fi smart plug (b) a smart energy meter (c) a battery torch (d) a Wi-Fi doorbell camera
25. 25.Which of these is an IoT device? (a) a plain table fan (b) a smart energy meter (c) a plain wall switch (d) a battery torch
26. 26.What does the sensor do? (a) carries the data (b) reads values, decides (c) measures the real world (d) acts on a command
27. 27.🌐 A weather station sends one reading every 60 seconds. How many readings does it send in 9 minutes?
28. 28.🏠 Which is a smart-home example? (a) a hand fan (b) a printed map (c) lights on from an app (d) a candle in a jar
29. 29.🌐 A soil sensor sends a reading to an app every 20 minutes. How many readings arrive in 4 hours?
30. 30.🌐 Is a wind-up clock an IoT device? (a) not an IoT device (b) an IoT device
31. 31.🌐 Each reading a sensor sends is 25 bytes. How many bytes do 30 readings take?
32. 32.🌐 A weather station sends one reading every 20 seconds. How many readings does it send in 6 minutes?
33. 33.🌐 A weather station sends one reading every 30 seconds. How many readings does it send in 1 minute?
34. 34.🔢 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
35. 35.🔢 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
36. 36.🌐 A weather station sends one reading every 5 seconds. How many readings does it send in 3 minutes?
37. 37.🌐 A weather station sends one reading every 20 seconds. How many readings does it send in 7 minutes?
38. 38.🌐 In an IoT system, which part acts on a command? (a) sensor (b) Wi-Fi (c) actuator (d) phone app
39. 39.🔢 To get a sensor reading onto a phone, what comes right after “the sensor measures”? (a) the board reads it (b) it is sent by Wi-Fi (c) the app shows it (d) the cloud stores it
40. 40.🌐 A soil sensor sends a reading to an app every 15 minutes. How many readings arrive in 1 hour?

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