Electronics Worksheet: What Is IoT

Electronics lesson 27: What is IoT? · Set 222 · 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.🔢 To get a sensor reading onto a phone, which is the FIRST step? (a) it is sent by Wi-Fi (b) the cloud stores it (c) the sensor measures (d) the board reads it
2. 2.🏠 Which is a smart-home example? (a) a candle in a jar (b) a printed map (c) lights on from an app (d) a hand fan
3. 3.🌐 How does a home IoT device usually send its data to the app? (a) through a candle (b) by post (c) over Wi-Fi (d) by shouting
4. 4.🌐 In an IoT system, which part acts on a command? (a) actuator (b) sensor (c) phone app (d) microcontroller
5. 5.🔍 Which is the odd one out? (a) a pencil sharpener (b) a wind-up clock (c) a plain table fan (d) a Wi-Fi weather station
6. 6.🌐 A weather station sends one reading every 10 seconds. How many readings does it send in 7 minutes?
7. 7.🔍 Which is the odd one out? (a) a fitness band with app (b) a Wi-Fi smart plug (c) a plain table fan (d) a Wi-Fi doorbell camera
8. 8.🔢 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) the board reads it (d) it is sent by Wi-Fi
9. 9.🔍 Which is the odd one out? (a) a battery torch (b) a smart energy meter (c) a pencil sharpener (d) a plain wall switch
10. 10.🔢 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
11. 11.What does the actuator do? (a) shows data to you (b) carries the data (c) acts on a command (d) stores data online
12. 12.Which of these is an IoT device? (a) a plain wall switch (b) a battery torch (c) a wind-up clock (d) a Wi-Fi smart plug
13. 13.🔍 Which is the odd one out? (a) a Wi-Fi doorbell camera (b) an app-controlled bulb (c) a Wi-Fi weather station (d) a pencil sharpener
14. 14.🌐 Each reading a sensor sends is 10 bytes. How many bytes do 120 readings take?
15. 15.What does the sensor do? (a) stores data online (b) acts on a command (c) shows data to you (d) measures the real world
16. 16.🌐 A weather station sends one reading every 20 seconds. How many readings does it send in 9 minutes?
17. 17.🌐 Is a Wi-Fi smart plug an IoT device? (a) not an IoT device (b) an IoT device
18. 18.🌐 A weather station sends one reading every 10 seconds. How many readings does it send in 1 minute?
19. 19.What does the cloud server do? (a) acts on a command (b) stores data online (c) shows data to you (d) measures the real world
20. 20.🌐 In an IoT system, which part stores data online? (a) cloud server (b) phone app (c) sensor (d) actuator
21. 21.🌐 A soil sensor sends a reading to an app every 30 minutes. How many readings arrive in 1 hour?
22. 22.What does the microcontroller do? (a) shows data to you (b) measures the real world (c) reads values, decides (d) carries the data
23. 23.🌐 A soil sensor sends a reading to an app every 20 minutes. How many readings arrive in 1 hour?
24. 24.🌐 A weather station sends one reading every 10 seconds. How many readings does it send in 5 minutes?
25. 25.🌐 A weather station sends one reading every 5 seconds. How many readings does it send in 8 minutes?
26. 26.🌐 Is a plain table fan an IoT device? (a) an IoT device (b) not an IoT device
27. 27.🔢 To get a sensor reading onto a phone, which comes first: “the app shows it” or “it is sent by Wi-Fi”? (a) it is sent by Wi-Fi (b) the app shows it
28. 28.Which of these is an IoT device? (a) a plain table fan (b) a fitness band with app (c) a paper calendar (d) a battery torch
29. 29.🌐 Each reading a sensor sends is 50 bytes. How many bytes do 70 readings take?
30. 30.🔢 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
31. 31.🌐 A weather station sends one reading every 20 seconds. How many readings does it send in 10 minutes?
32. 32.🔍 Which is the odd one out? (a) a Wi-Fi smart plug (b) a plain table fan (c) a pencil sharpener (d) a plain wall switch
33. 33.🌐 Is a wind-up clock an IoT device? (a) an IoT device (b) not an IoT device
34. 34.🌐 Is a pencil sharpener an IoT device? (a) an IoT device (b) not an IoT device
35. 35.🔍 Which is the odd one out? (a) a wind-up clock (b) a pencil sharpener (c) a fitness band with app (d) a paper calendar
36. 36.🌐 A soil sensor sends a reading to an app every 15 minutes. How many readings arrive in 2 hours?
37. 37.Which of these is not an IoT device? (a) an app-controlled bulb (b) a battery torch (c) a Wi-Fi weather station (d) a fitness band with app
38. 38.🌐 Is a Wi-Fi doorbell camera an IoT device? (a) an IoT device (b) not an IoT device
39. 39.Which of these is an IoT device? (a) a plain wall switch (b) an app-controlled bulb (c) a paper calendar (d) a battery torch
40. 40.🔢 To get a sensor reading onto a phone, which comes first: “the board reads it” or “it is sent by Wi-Fi”? (a) the board reads it (b) it is sent by Wi-Fi

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