Electronics Worksheet: What Is IoT

Electronics lesson 27: What is IoT? · Set 750 · 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.🌐 Each reading a sensor sends is 20 bytes. How many bytes do 80 readings take?
2. 2.🌐 Is an app-controlled bulb an IoT device? (a) not an IoT device (b) an IoT device
3. 3.🌐 In an IoT system, which part measures the real world? (a) cloud server (b) Wi-Fi (c) sensor (d) microcontroller
4. 4.🔍 Which is the odd one out? (a) a wind-up clock (b) a plain wall switch (c) a battery torch (d) a Wi-Fi weather station
5. 5.🏠 Which is a smart-home example? (a) a candle in a jar (b) a printed map (c) a hand fan (d) lights on from an app
6. 6.What does the sensor do? (a) carries the data (b) stores data online (c) acts on a command (d) measures the real world
7. 7.🌐 How does a home IoT device usually send its data to the app? (a) by post (b) by shouting (c) over Wi-Fi (d) through a candle
8. 8.🌐 What does IoT stand for? (a) Inside of Toys (b) Input of Tools (c) Internet of Things (d) Internet of Talk
9. 9.Which of these is not an IoT device? (a) a Wi-Fi weather station (b) a Wi-Fi doorbell camera (c) a plain table fan (d) a Wi-Fi smart plug
10. 10.🌐 In an IoT system, which part carries the data? (a) Wi-Fi (b) sensor (c) actuator (d) microcontroller
11. 11.🔢 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
12. 12.🌐 In an IoT system, which part reads values, decides? (a) phone app (b) microcontroller (c) Wi-Fi (d) sensor
13. 13.🌐 Is a plain wall switch an IoT device? (a) an IoT device (b) not an IoT device
14. 14.🌐 In an IoT system, which part shows data to you? (a) phone app (b) sensor (c) actuator (d) cloud server
15. 15.🌐 Each reading a sensor sends is 25 bytes. How many bytes do 110 readings take?
16. 16.🌐 A weather station sends one reading every 5 seconds. How many readings does it send in 10 minutes?
17. 17.🔍 Which is the odd one out? (a) a pencil sharpener (b) a paper calendar (c) a plain table fan (d) a Wi-Fi doorbell camera
18. 18.🔢 To get a sensor reading onto a phone, what comes right after “the sensor measures”? (a) it is sent by Wi-Fi (b) the cloud stores it (c) the app shows it (d) the board reads it
19. 19.Which of these is an IoT device? (a) a paper calendar (b) a pencil sharpener (c) a plain table fan (d) a fitness band with app
20. 20.🌐 A soil sensor sends a reading to an app every 30 minutes. How many readings arrive in 5 hours?
21. 21.🌐 Is a Wi-Fi weather station an IoT device? (a) not an IoT device (b) an IoT device
22. 22.🌐 Is a battery torch an IoT device? (a) not an IoT device (b) an IoT device
23. 23.🌐 Is a plain table fan an IoT device? (a) not an IoT device (b) an IoT device
24. 24.What does the actuator do? (a) reads values, decides (b) carries the data (c) measures the real world (d) acts on a command
25. 25.What does the cloud server do? (a) shows data to you (b) reads values, decides (c) stores data online (d) acts on a command
26. 26.🔍 Which is the odd one out? (a) a battery torch (b) a fitness band with app (c) a paper calendar (d) a wind-up clock
27. 27.🌐 Is a pencil sharpener an IoT device? (a) not an IoT device (b) an IoT device
28. 28.🔢 To get a sensor reading onto a phone, which is the FIRST step? (a) the sensor measures (b) the board reads it (c) it is sent by Wi-Fi (d) the cloud stores it
29. 29.🌐 A weather station sends one reading every 15 seconds. How many readings does it send in 7 minutes?
30. 30.🌐 Each reading a sensor sends is 50 bytes. How many bytes do 190 readings take?
31. 31.🌐 Is a paper calendar an IoT device? (a) an IoT device (b) not an IoT device
32. 32.What does the microcontroller do? (a) reads values, decides (b) stores data online (c) measures the real world (d) carries the data
33. 33.🌐 Each reading a sensor sends is 20 bytes. How many bytes do 50 readings take?
34. 34.🔢 To get a sensor reading onto a phone, which comes first: “the board reads it” or “the sensor measures”? (a) the sensor measures (b) the board reads it
35. 35.🌐 A soil sensor sends a reading to an app every 5 minutes. How many readings arrive in 3 hours?
36. 36.🌐 Is a Wi-Fi smart plug an IoT device? (a) not an IoT device (b) an IoT device
37. 37.🌐 Each reading a sensor sends is 50 bytes. How many bytes do 180 readings take?
38. 38.🌐 Is a Wi-Fi doorbell camera an IoT device? (a) not an IoT device (b) an IoT device
39. 39.🔍 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 battery torch
40. 40.🔢 To get a sensor reading onto a phone, what comes right after “it is sent by Wi-Fi”? (a) the sensor measures (b) the board reads it (c) the cloud stores it (d) the app shows it

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