Electronics Worksheet: What Is IoT

Electronics lesson 27: What is IoT? · Set 69 · 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.🔍 Which is the odd one out? (a) a paper calendar (b) a smart energy meter (c) an app-controlled bulb (d) a Wi-Fi doorbell camera
2. 2.🌐 Is an app-controlled bulb an IoT device? (a) an IoT device (b) not an IoT device
3. 3.What does the actuator do? (a) shows data to you (b) acts on a command (c) carries the data (d) measures the real world
4. 4.🔍 Which is the odd one out? (a) a Wi-Fi doorbell camera (b) a fitness band with app (c) a Wi-Fi weather station (d) a battery torch
5. 5.🔢 To get a sensor reading onto a phone, which comes first: “the app shows it” or “the sensor measures”? (a) the app shows it (b) the sensor measures
6. 6.🔢 To get a sensor reading onto a phone, what comes right after “the sensor measures”? (a) the cloud stores it (b) the board reads it (c) it is sent by Wi-Fi (d) the app shows it
7. 7.🔍 Which is the odd one out? (a) a plain wall switch (b) a battery torch (c) a paper calendar (d) a smart energy meter
8. 8.What does the phone app do? (a) carries the data (b) measures the real world (c) reads values, decides (d) shows data to you
9. 9.🔢 To get a sensor reading onto a phone, which is the FIRST step? (a) the board reads it (b) the cloud stores it (c) the sensor measures (d) it is sent by Wi-Fi
10. 10.Which of these is an IoT device? (a) a pencil sharpener (b) a plain table fan (c) an app-controlled bulb (d) a wind-up clock
11. 11.🌐 In an IoT system, which part acts on a command? (a) actuator (b) sensor (c) phone app (d) microcontroller
12. 12.🔢 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
13. 13.What does the Wi-Fi link do? (a) measures the real world (b) carries the data (c) shows data to you (d) reads values, decides
14. 14.🌐 Each reading a sensor sends is 20 bytes. How many bytes do 160 readings take?
15. 15.🌐 A weather station sends one reading every 60 seconds. How many readings does it send in 5 minutes?
16. 16.🌐 Each reading a sensor sends is 50 bytes. How many bytes do 50 readings take?
17. 17.🔍 Which is the odd one out? (a) a battery torch (b) a paper calendar (c) a pencil sharpener (d) a Wi-Fi doorbell camera
18. 18.🌐 In an IoT system, which part stores data online? (a) sensor (b) cloud server (c) phone app (d) microcontroller
19. 19.What does the sensor do? (a) carries the data (b) shows data to you (c) measures the real world (d) stores data online
20. 20.🔍 Which is the odd one out? (a) a paper calendar (b) a battery torch (c) a Wi-Fi smart plug (d) a wind-up clock
21. 21.🌐 A weather station sends one reading every 20 seconds. How many readings does it send in 6 minutes?
22. 22.🌐 Is a plain wall switch an IoT device? (a) an IoT device (b) not an IoT device
23. 23.🌐 A weather station sends one reading every 10 seconds. How many readings does it send in 4 minutes?
24. 24.🌐 In an IoT system, which part reads values, decides? (a) microcontroller (b) phone app (c) Wi-Fi (d) actuator
25. 25.🌐 How does a home IoT device usually send its data to the app? (a) by post (b) over Wi-Fi (c) by shouting (d) through a candle
26. 26.🌐 Each reading a sensor sends is 10 bytes. How many bytes do 200 readings take?
27. 27.Which of these is not an IoT device? (a) a smart energy meter (b) a fitness band with app (c) a battery torch (d) a Wi-Fi weather station
28. 28.🔢 To get a sensor reading onto a phone, which is the LAST step? (a) the cloud stores it (b) the sensor measures (c) the board reads it (d) the app shows it
29. 29.🌐 Each reading a sensor sends is 10 bytes. How many bytes do 100 readings take?
30. 30.🌐 Each reading a sensor sends is 50 bytes. How many bytes do 200 readings take?
31. 31.🌐 A weather station sends one reading every 20 seconds. How many readings does it send in 7 minutes?
32. 32.🌐 Is a pencil sharpener an IoT device? (a) an IoT device (b) not an IoT device
33. 33.🔍 Which is the odd one out? (a) a Wi-Fi weather station (b) an app-controlled bulb (c) a Wi-Fi doorbell camera (d) a plain table fan
34. 34.🔢 To get a sensor reading onto a phone, what comes right after “the board reads it”? (a) the app shows it (b) the cloud stores it (c) it is sent by Wi-Fi (d) the sensor measures
35. 35.🌐 Is a battery torch an IoT device? (a) an IoT device (b) not an IoT device
36. 36.🌐 A weather station sends one reading every 10 seconds. How many readings does it send in 7 minutes?
37. 37.What does the microcontroller do? (a) measures the real world (b) reads values, decides (c) stores data online (d) acts on a command
38. 38.Which of these is an IoT device? (a) a plain table fan (b) a plain wall switch (c) a smart energy meter (d) a pencil sharpener
39. 39.🌐 In an IoT system, which part carries the data? (a) microcontroller (b) cloud server (c) phone app (d) Wi-Fi
40. 40.Which of these is not an IoT device? (a) a plain table fan (b) an app-controlled bulb (c) a smart energy meter (d) a fitness band with app

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