Electronics Worksheet: What Is IoT

Electronics lesson 27: What is IoT? · Set 8 · 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 30 minutes. How many readings arrive in 6 hours?
2. 2.🌐 In an IoT system, which part measures the real world? (a) Wi-Fi (b) actuator (c) sensor (d) phone app
3. 3.🌐 A weather station sends one reading every 30 seconds. How many readings does it send in 1 minute?
4. 4.🌐 How does a home IoT device usually send its data to the app? (a) over Wi-Fi (b) by shouting (c) through a candle (d) by post
5. 5.🌐 Is an app-controlled bulb an IoT device? (a) an IoT device (b) not an IoT device
6. 6.🌐 What does IoT stand for? (a) Internet of Things (b) Input of Tools (c) Internet of Talk (d) Inside of Toys
7. 7.🌐 Is a paper calendar an IoT device? (a) an IoT device (b) not an IoT device
8. 8.🌐 In an IoT system, which part reads values, decides? (a) microcontroller (b) sensor (c) actuator (d) Wi-Fi
9. 9.Which of these is not an IoT device? (a) a Wi-Fi doorbell camera (b) a wind-up clock (c) a smart energy meter (d) an app-controlled bulb
10. 10.🌐 In an IoT system, which part acts on a command? (a) sensor (b) cloud server (c) Wi-Fi (d) actuator
11. 11.🌐 A soil sensor sends a reading to an app every 20 minutes. How many readings arrive in 1 hour?
12. 12.Which of these is not an IoT device? (a) a paper calendar (b) a Wi-Fi doorbell camera (c) an app-controlled bulb (d) a Wi-Fi weather station
13. 13.🔢 To get a sensor reading onto a phone, what comes right after “the sensor measures”? (a) the cloud stores it (b) the app shows it (c) it is sent by Wi-Fi (d) the board reads it
14. 14.🔢 To get a sensor reading onto a phone, which comes first: “it is sent by Wi-Fi” or “the sensor measures”? (a) it is sent by Wi-Fi (b) the sensor measures
15. 15.🌐 In an IoT system, which part stores data online? (a) cloud server (b) microcontroller (c) actuator (d) Wi-Fi
16. 16.🔍 Which is the odd one out? (a) a fitness band with app (b) a pencil sharpener (c) a battery torch (d) a wind-up clock
17. 17.What does the actuator do? (a) shows data to you (b) stores data online (c) reads values, decides (d) acts on a command
18. 18.🌐 Each reading a sensor sends is 50 bytes. How many bytes do 80 readings take?
19. 19.🌐 Each reading a sensor sends is 10 bytes. How many bytes do 170 readings take?
20. 20.Which of these is an IoT device? (a) a pencil sharpener (b) a wind-up clock (c) a Wi-Fi smart plug (d) a paper calendar
21. 21.Which of these is an IoT device? (a) a plain wall switch (b) an app-controlled bulb (c) a wind-up clock (d) a pencil sharpener
22. 22.🌐 In an IoT system, which part shows data to you? (a) actuator (b) Wi-Fi (c) phone app (d) sensor
23. 23.🌐 A soil sensor sends a reading to an app every 20 minutes. How many readings arrive in 4 hours?
24. 24.Which of these is not an IoT device? (a) a fitness band with app (b) a Wi-Fi smart plug (c) a smart energy meter (d) a battery torch
25. 25.🌐 Is a battery torch an IoT device? (a) not an IoT device (b) an IoT device
26. 26.🔢 To get a sensor reading onto a phone, what comes right after “the board reads it”? (a) the app shows it (b) it is sent by Wi-Fi (c) the cloud stores it (d) the sensor measures
27. 27.What does the Wi-Fi link do? (a) stores data online (b) acts on a command (c) carries the data (d) reads values, decides
28. 28.🌐 Is a plain wall switch an IoT device? (a) not an IoT device (b) an IoT device
29. 29.🌐 A weather station sends one reading every 5 seconds. How many readings does it send in 2 minutes?
30. 30.🔢 To get a sensor reading onto a phone, which is the LAST step? (a) it is sent by Wi-Fi (b) the app shows it (c) the cloud stores it (d) the sensor measures
31. 31.🔢 To get a sensor reading onto a phone, which comes first: “the board reads it” or “the cloud stores it”? (a) the cloud stores it (b) the board reads it
32. 32.🔍 Which is the odd one out? (a) a plain table fan (b) a paper calendar (c) a battery torch (d) a smart energy meter
33. 33.🔢 To get a sensor reading onto a phone, what comes right after “it is sent by Wi-Fi”? (a) the app shows it (b) the board reads it (c) the sensor measures (d) the cloud stores it
34. 34.🏠 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
35. 35.🔍 Which is the odd one out? (a) a smart energy meter (b) a Wi-Fi doorbell camera (c) a wind-up clock (d) a fitness band with app
36. 36.What does the cloud server do? (a) shows data to you (b) carries the data (c) measures the real world (d) stores data online
37. 37.🌐 Each reading a sensor sends is 25 bytes. How many bytes do 30 readings take?
38. 38.🌐 A soil sensor sends a reading to an app every 30 minutes. How many readings arrive in 4 hours?
39. 39.What does the sensor do? (a) acts on a command (b) carries the data (c) measures the real world (d) shows data to you
40. 40.What does the microcontroller do? (a) reads values, decides (b) acts on a command (c) stores data online (d) carries the data

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