Electronics Worksheet: What Is IoT

Electronics lesson 27: What is IoT? · Set 925 · 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) the cloud stores it (b) the board reads it (c) the sensor measures (d) the app shows it
2. 2.🌐 Each reading a sensor sends is 50 bytes. How many bytes do 170 readings take?
3. 3.🌐 What does IoT stand for? (a) Input of Tools (b) Internet of Talk (c) Inside of Toys (d) Internet of Things
4. 4.Which of these is an IoT device? (a) a pencil sharpener (b) a battery torch (c) an app-controlled bulb (d) a wind-up clock
5. 5.Which of these is an IoT device? (a) a pencil sharpener (b) a Wi-Fi doorbell camera (c) a plain wall switch (d) a battery torch
6. 6.🔢 To get a sensor reading onto a phone, what comes right after “the board reads it”? (a) the sensor measures (b) the cloud stores it (c) the app shows it (d) it is sent by Wi-Fi
7. 7.🌐 How does a home IoT device usually send its data to the app? (a) over Wi-Fi (b) by post (c) by shouting (d) through a candle
8. 8.🌐 Is an app-controlled bulb an IoT device? (a) an IoT device (b) not an IoT device
9. 9.🔍 Which is the odd one out? (a) a Wi-Fi smart plug (b) a smart energy meter (c) an app-controlled bulb (d) a pencil sharpener
10. 10.🌐 Is a Wi-Fi doorbell camera an IoT device? (a) not an IoT device (b) an IoT device
11. 11.🌐 In an IoT system, which part measures the real world? (a) phone app (b) Wi-Fi (c) actuator (d) sensor
12. 12.🔢 To get a sensor reading onto a phone, which comes first: “the sensor measures” or “the app shows it”? (a) the app shows it (b) the sensor measures
13. 13.What does the Wi-Fi link do? (a) acts on a command (b) carries the data (c) measures the real world (d) stores data online
14. 14.🌐 A weather station sends one reading every 60 seconds. How many readings does it send in 4 minutes?
15. 15.🌐 In an IoT system, which part shows data to you? (a) Wi-Fi (b) microcontroller (c) cloud server (d) phone app
16. 16.🌐 A weather station sends one reading every 60 seconds. How many readings does it send in 2 minutes?
17. 17.🌐 Each reading a sensor sends is 25 bytes. How many bytes do 30 readings take?
18. 18.🌐 Each reading a sensor sends is 20 bytes. How many bytes do 50 readings take?
19. 19.What does the sensor do? (a) stores data online (b) shows data to you (c) acts on a command (d) measures the real world
20. 20.🌐 Is a plain wall switch an IoT device? (a) an IoT device (b) not an IoT device
21. 21.What does the microcontroller do? (a) reads values, decides (b) shows data to you (c) acts on a command (d) measures the real world
22. 22.🌐 Each reading a sensor sends is 20 bytes. How many bytes do 70 readings take?
23. 23.🌐 A soil sensor sends a reading to an app every 20 minutes. How many readings arrive in 3 hours?
24. 24.Which of these is not an IoT device? (a) a smart energy meter (b) a Wi-Fi smart plug (c) a Wi-Fi weather station (d) a plain wall switch
25. 25.🌐 In an IoT system, which part stores data online? (a) microcontroller (b) cloud server (c) sensor (d) phone app
26. 26.🔢 To get a sensor reading onto a phone, which comes first: “the app shows it” or “it is sent by Wi-Fi”? (a) the app shows it (b) it is sent by Wi-Fi
27. 27.🌐 Is a smart energy meter an IoT device? (a) not an IoT device (b) an IoT device
28. 28.🌐 Each reading a sensor sends is 20 bytes. How many bytes do 40 readings take?
29. 29.🌐 A weather station sends one reading every 20 seconds. How many readings does it send in 5 minutes?
30. 30.🏠 Which is a smart-home example? (a) a hand fan (b) a printed map (c) a candle in a jar (d) lights on from an app
31. 31.🌐 A weather station sends one reading every 15 seconds. How many readings does it send in 10 minutes?
32. 32.What does the cloud server do? (a) stores data online (b) measures the real world (c) reads values, decides (d) acts on a command
33. 33.🌐 Is a pencil sharpener an IoT device? (a) not an IoT device (b) an IoT device
34. 34.🔢 To get a sensor reading onto a phone, which is the LAST step? (a) it is sent by Wi-Fi (b) the sensor measures (c) the cloud stores it (d) the app shows it
35. 35.🔍 Which is the odd one out? (a) a fitness band with app (b) a battery torch (c) a pencil sharpener (d) a plain table fan
36. 36.What does the actuator do? (a) acts on a command (b) carries the data (c) measures the real world (d) reads values, decides
37. 37.🌐 Is a Wi-Fi smart plug an IoT device? (a) an IoT device (b) not an IoT device
38. 38.Which of these is an IoT device? (a) a Wi-Fi smart plug (b) a wind-up clock (c) a plain wall switch (d) a paper calendar
39. 39.🌐 Is a battery torch an IoT device? (a) an IoT device (b) not an IoT device
40. 40.🌐 A weather station sends one reading every 5 seconds. How many readings does it send in 8 minutes?

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