Electronics Worksheet: What Is IoT

Electronics lesson 27: What is IoT? · Set 180 · 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 battery torch (b) a plain wall switch (c) a plain table fan (d) a Wi-Fi doorbell camera
2. 2.🌐 A soil sensor sends a reading to an app every 15 minutes. How many readings arrive in 2 hours?
3. 3.🌐 A weather station sends one reading every 20 seconds. How many readings does it send in 9 minutes?
4. 4.🌐 In an IoT system, which part shows data to you? (a) phone app (b) actuator (c) microcontroller (d) Wi-Fi
5. 5.🌐 In an IoT system, which part carries the data? (a) sensor (b) Wi-Fi (c) phone app (d) actuator
6. 6.🌐 A weather station sends one reading every 5 seconds. How many readings does it send in 9 minutes?
7. 7.🌐 Is a pencil sharpener an IoT device? (a) an IoT device (b) not an IoT device
8. 8.What does the microcontroller do? (a) carries the data (b) measures the real world (c) shows data to you (d) reads values, decides
9. 9.🌐 A weather station sends one reading every 20 seconds. How many readings does it send in 4 minutes?
10. 10.🌐 What does IoT stand for? (a) Input of Tools (b) Inside of Toys (c) Internet of Talk (d) Internet of Things
11. 11.🔢 To get a sensor reading onto a phone, what comes right after “the cloud stores it”? (a) the board reads it (b) the sensor measures (c) it is sent by Wi-Fi (d) the app shows it
12. 12.🔍 Which is the odd one out? (a) a Wi-Fi smart plug (b) a battery torch (c) a smart energy meter (d) a Wi-Fi doorbell camera
13. 13.🏠 Which is a smart-home example? (a) a candle in a jar (b) lights on from an app (c) a printed map (d) a hand fan
14. 14.🌐 A soil sensor sends a reading to an app every 5 minutes. How many readings arrive in 3 hours?
15. 15.🔍 Which is the odd one out? (a) a smart energy meter (b) a fitness band with app (c) a Wi-Fi smart plug (d) a paper calendar
16. 16.🌐 Each reading a sensor sends is 10 bytes. How many bytes do 80 readings take?
17. 17.🌐 In an IoT system, which part reads values, decides? (a) phone app (b) microcontroller (c) sensor (d) cloud server
18. 18.What does the actuator do? (a) stores data online (b) carries the data (c) acts on a command (d) reads values, decides
19. 19.🔢 To get a sensor reading onto a phone, which is the FIRST step? (a) the app shows it (b) the cloud stores it (c) the sensor measures (d) the board reads it
20. 20.🌐 A soil sensor sends a reading to an app every 15 minutes. How many readings arrive in 4 hours?
21. 21.Which of these is not an IoT device? (a) a Wi-Fi smart plug (b) a Wi-Fi doorbell camera (c) a Wi-Fi weather station (d) a plain table fan
22. 22.Which of these is an IoT device? (a) a Wi-Fi weather station (b) a plain table fan (c) a plain wall switch (d) a wind-up clock
23. 23.🌐 A weather station sends one reading every 5 seconds. How many readings does it send in 8 minutes?
24. 24.🌐 Is a Wi-Fi doorbell camera an IoT device? (a) an IoT device (b) not an IoT device
25. 25.🌐 In an IoT system, which part stores data online? (a) sensor (b) cloud server (c) phone app (d) microcontroller
26. 26.Which of these is an IoT device? (a) a pencil sharpener (b) a paper calendar (c) an app-controlled bulb (d) a wind-up clock
27. 27.🌐 Is a paper calendar an IoT device? (a) not an IoT device (b) an IoT device
28. 28.🌐 Is a Wi-Fi weather station an IoT device? (a) not an IoT device (b) an IoT device
29. 29.🌐 Is a Wi-Fi smart plug an IoT device? (a) an IoT device (b) not an IoT device
30. 30.🔢 To get a sensor reading onto a phone, which comes first: “the sensor measures” or “it is sent by Wi-Fi”? (a) the sensor measures (b) it is sent by Wi-Fi
31. 31.🌐 A weather station sends one reading every 5 seconds. How many readings does it send in 7 minutes?
32. 32.What does the sensor do? (a) carries the data (b) shows data to you (c) stores data online (d) measures the real world
33. 33.Which of these is an IoT device? (a) a pencil sharpener (b) a plain wall switch (c) a paper calendar (d) a Wi-Fi doorbell camera
34. 34.Which of these is an IoT device? (a) a battery torch (b) a fitness band with app (c) a plain wall switch (d) a paper calendar
35. 35.What does the phone app do? (a) acts on a command (b) reads values, decides (c) shows data to you (d) measures the real world
36. 36.🌐 Each reading a sensor sends is 10 bytes. How many bytes do 120 readings take?
37. 37.🌐 Each reading a sensor sends is 10 bytes. How many bytes do 140 readings take?
38. 38.🌐 A soil sensor sends a reading to an app every 20 minutes. How many readings arrive in 1 hour?
39. 39.🌐 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
40. 40.🔍 Which is the odd one out? (a) a battery torch (b) a pencil sharpener (c) a smart energy meter (d) a plain table fan

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