Electronics Worksheet: What Is IoT

Electronics lesson 27: What is IoT? · Set 550 · 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 Wi-Fi doorbell camera (b) an app-controlled bulb (c) a pencil sharpener (d) a Wi-Fi smart plug
2. 2.🔢 To get a sensor reading onto a phone, which is the FIRST step? (a) the sensor measures (b) the board reads it (c) the cloud stores it (d) it is sent by Wi-Fi
3. 3.🌐 A soil sensor sends a reading to an app every 20 minutes. How many readings arrive in 6 hours?
4. 4.🌐 In an IoT system, which part reads values, decides? (a) actuator (b) phone app (c) microcontroller (d) sensor
5. 5.🔢 To get a sensor reading onto a phone, which comes first: “it is sent by Wi-Fi” or “the app shows it”? (a) the app shows it (b) it is sent by Wi-Fi
6. 6.🔢 To get a sensor reading onto a phone, which is the LAST step? (a) the sensor measures (b) the board reads it (c) it is sent by Wi-Fi (d) the app shows it
7. 7.🌐 How does a home IoT device usually send its data to the app? (a) by post (b) through a candle (c) by shouting (d) over Wi-Fi
8. 8.🌐 Each reading a sensor sends is 10 bytes. How many bytes do 150 readings take?
9. 9.🔍 Which is the odd one out? (a) a plain table fan (b) a battery torch (c) a wind-up clock (d) a Wi-Fi smart plug
10. 10.Which of these is not an IoT device? (a) a fitness band with app (b) a Wi-Fi weather station (c) a Wi-Fi smart plug (d) a pencil sharpener
11. 11.🔍 Which is the odd one out? (a) a paper calendar (b) a plain wall switch (c) a pencil sharpener (d) an app-controlled bulb
12. 12.🔢 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
13. 13.🌐 Is a Wi-Fi doorbell camera an IoT device? (a) not an IoT device (b) an IoT device
14. 14.Which of these is not an IoT device? (a) an app-controlled bulb (b) a fitness band with app (c) a smart energy meter (d) a plain wall switch
15. 15.🌐 A soil sensor sends a reading to an app every 5 minutes. How many readings arrive in 5 hours?
16. 16.🌐 Is a plain wall switch an IoT device? (a) an IoT device (b) not an IoT device
17. 17.🌐 A weather station sends one reading every 15 seconds. How many readings does it send in 1 minute?
18. 18.🌐 What does IoT stand for? (a) Internet of Talk (b) Input of Tools (c) Inside of Toys (d) Internet of Things
19. 19.🌐 A soil sensor sends a reading to an app every 30 minutes. How many readings arrive in 4 hours?
20. 20.Which of these is an IoT device? (a) a plain table fan (b) a smart energy meter (c) a pencil sharpener (d) a battery torch
21. 21.🌐 A soil sensor sends a reading to an app every 15 minutes. How many readings arrive in 4 hours?
22. 22.🌐 A weather station sends one reading every 60 seconds. How many readings does it send in 2 minutes?
23. 23.🌐 A soil sensor sends a reading to an app every 10 minutes. How many readings arrive in 3 hours?
24. 24.🌐 A soil sensor sends a reading to an app every 10 minutes. How many readings arrive in 4 hours?
25. 25.What does the sensor do? (a) measures the real world (b) carries the data (c) acts on a command (d) reads values, decides
26. 26.🌐 Is a battery torch an IoT device? (a) an IoT device (b) not an IoT device
27. 27.🌐 Is a Wi-Fi smart plug an IoT device? (a) an IoT device (b) not an IoT device
28. 28.🌐 A soil sensor sends a reading to an app every 20 minutes. How many readings arrive in 5 hours?
29. 29.Which of these is an IoT device? (a) a pencil sharpener (b) a plain table fan (c) a battery torch (d) a fitness band with app
30. 30.🌐 A weather station sends one reading every 15 seconds. How many readings does it send in 2 minutes?
31. 31.🔍 Which is the odd one out? (a) a fitness band with app (b) a smart energy meter (c) an app-controlled bulb (d) a wind-up clock
32. 32.What does the phone app do? (a) acts on a command (b) carries the data (c) shows data to you (d) measures the real world
33. 33.What does the microcontroller do? (a) reads values, decides (b) carries the data (c) stores data online (d) measures the real world
34. 34.🔢 To get a sensor reading onto a phone, what comes right after “it is sent by Wi-Fi”? (a) the cloud stores it (b) the app shows it (c) the sensor measures (d) the board reads it
35. 35.Which of these is not an IoT device? (a) a Wi-Fi smart plug (b) an app-controlled bulb (c) a Wi-Fi doorbell camera (d) a wind-up clock
36. 36.🏠 Which is a smart-home example? (a) a hand fan (b) lights on from an app (c) a candle in a jar (d) a printed map
37. 37.🌐 A weather station sends one reading every 5 seconds. How many readings does it send in 6 minutes?
38. 38.🌐 In an IoT system, which part stores data online? (a) actuator (b) sensor (c) cloud server (d) microcontroller
39. 39.🔍 Which is the odd one out? (a) an app-controlled bulb (b) a Wi-Fi smart plug (c) a Wi-Fi weather station (d) a battery torch
40. 40.What does the actuator do? (a) carries the data (b) acts on a command (c) measures the real world (d) shows data to you

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