Electronics Worksheet: What Is IoT

Electronics lesson 27: What is IoT? · Set 15 · 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.🌐 In an IoT system, which part reads values, decides? (a) microcontroller (b) Wi-Fi (c) sensor (d) phone app
2. 2.Which of these is not an IoT device? (a) a Wi-Fi weather station (b) an app-controlled bulb (c) a paper calendar (d) a Wi-Fi smart plug
3. 3.🌐 What does IoT stand for? (a) Internet of Things (b) Internet of Talk (c) Input of Tools (d) Inside of Toys
4. 4.🔍 Which is the odd one out? (a) a smart energy meter (b) a Wi-Fi doorbell camera (c) an app-controlled bulb (d) a pencil sharpener
5. 5.Which of these is an IoT device? (a) a wind-up clock (b) a battery torch (c) a Wi-Fi weather station (d) a plain table fan
6. 6.🌐 A weather station sends one reading every 30 seconds. How many readings does it send in 2 minutes?
7. 7.🌐 A weather station sends one reading every 60 seconds. How many readings does it send in 5 minutes?
8. 8.🌐 Is a Wi-Fi smart plug an IoT device? (a) an IoT device (b) not an IoT device
9. 9.🌐 In an IoT system, which part stores data online? (a) phone app (b) microcontroller (c) cloud server (d) actuator
10. 10.🌐 A weather station sends one reading every 30 seconds. How many readings does it send in 10 minutes?
11. 11.Which of these is not an IoT device? (a) a smart energy meter (b) a plain wall switch (c) an app-controlled bulb (d) a Wi-Fi smart plug
12. 12.🔍 Which is the odd one out? (a) a smart energy meter (b) a Wi-Fi smart plug (c) a Wi-Fi weather station (d) a paper calendar
13. 13.🌐 In an IoT system, which part shows data to you? (a) actuator (b) Wi-Fi (c) phone app (d) microcontroller
14. 14.What does the microcontroller do? (a) stores data online (b) carries the data (c) acts on a command (d) reads values, decides
15. 15.What does the sensor do? (a) shows data to you (b) acts on a command (c) carries the data (d) measures the real world
16. 16.🌐 Each reading a sensor sends is 10 bytes. How many bytes do 40 readings take?
17. 17.🔢 To get a sensor reading onto a phone, which is the LAST step? (a) the sensor measures (b) the cloud stores it (c) the board reads it (d) the app shows it
18. 18.🔢 To get a sensor reading onto a phone, which is the FIRST step? (a) the app shows it (b) it is sent by Wi-Fi (c) the cloud stores it (d) the sensor measures
19. 19.🌐 A soil sensor sends a reading to an app every 5 minutes. How many readings arrive in 2 hours?
20. 20.🌐 A soil sensor sends a reading to an app every 20 minutes. How many readings arrive in 4 hours?
21. 21.🌐 Each reading a sensor sends is 10 bytes. How many bytes do 150 readings take?
22. 22.🌐 Each reading a sensor sends is 10 bytes. How many bytes do 60 readings take?
23. 23.🔢 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 cloud stores it (d) the sensor measures
24. 24.Which of these is an IoT device? (a) a paper calendar (b) a wind-up clock (c) a battery torch (d) an app-controlled bulb
25. 25.🌐 A soil sensor sends a reading to an app every 15 minutes. How many readings arrive in 1 hour?
26. 26.🌐 A soil sensor sends a reading to an app every 5 minutes. How many readings arrive in 5 hours?
27. 27.🔢 To get a sensor reading onto a phone, which comes first: “the app shows it” or “the board reads it”? (a) the app shows it (b) the board reads it
28. 28.🌐 A weather station sends one reading every 5 seconds. How many readings does it send in 5 minutes?
29. 29.🔍 Which is the odd one out? (a) a wind-up clock (b) a paper calendar (c) a smart energy meter (d) a battery torch
30. 30.🌐 How does a home IoT device usually send its data to the app? (a) over Wi-Fi (b) through a candle (c) by shouting (d) by post
31. 31.🌐 Each reading a sensor sends is 20 bytes. How many bytes do 40 readings take?
32. 32.🔍 Which is the odd one out? (a) a wind-up clock (b) a Wi-Fi smart plug (c) a Wi-Fi weather station (d) a fitness band with app
33. 33.🌐 In an IoT system, which part carries the data? (a) Wi-Fi (b) phone app (c) sensor (d) microcontroller
34. 34.🔢 To get a sensor reading onto a phone, what comes right after “the board reads it”? (a) the sensor measures (b) the app shows it (c) the cloud stores it (d) it is sent by Wi-Fi
35. 35.🔍 Which is the odd one out? (a) a battery torch (b) a fitness band with app (c) a Wi-Fi doorbell camera (d) a Wi-Fi smart plug
36. 36.🏠 Which is a smart-home example? (a) lights on from an app (b) a printed map (c) a hand fan (d) a candle in a jar
37. 37.🌐 Is a fitness band with app an IoT device? (a) not an IoT device (b) an IoT device
38. 38.Which of these is an IoT device? (a) a smart energy meter (b) a battery torch (c) a plain wall switch (d) a paper calendar
39. 39.🔍 Which is the odd one out? (a) a Wi-Fi smart plug (b) a battery torch (c) a paper calendar (d) a plain wall switch
40. 40.🌐 Each reading a sensor sends is 10 bytes. How many bytes do 140 readings take?

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