Electronics Worksheet: What Is IoT

Electronics lesson 27: What is IoT? · Set 674 · 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 plain table fan (b) a plain wall switch (c) a wind-up clock (d) a Wi-Fi doorbell camera
2. 2.🌐 A soil sensor sends a reading to an app every 30 minutes. How many readings arrive in 4 hours?
3. 3.🌐 Each reading a sensor sends is 25 bytes. How many bytes do 170 readings take?
4. 4.🌐 A weather station sends one reading every 15 seconds. How many readings does it send in 2 minutes?
5. 5.Which of these is not an IoT device? (a) a Wi-Fi smart plug (b) a Wi-Fi weather station (c) a smart energy meter (d) a plain table fan
6. 6.🔢 To get a sensor reading onto a phone, which comes first: “it is sent by Wi-Fi” or “the cloud stores it”? (a) the cloud stores it (b) it is sent by Wi-Fi
7. 7.Which of these is an IoT device? (a) a Wi-Fi doorbell camera (b) a plain wall switch (c) a paper calendar (d) a plain table fan
8. 8.🔢 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 sensor measures (c) the app shows it (d) the board reads it
9. 9.Which of these is an IoT device? (a) a Wi-Fi weather station (b) a plain table fan (c) a pencil sharpener (d) a wind-up clock
10. 10.🌐 A soil sensor sends a reading to an app every 15 minutes. How many readings arrive in 2 hours?
11. 11.🌐 Is a wind-up clock an IoT device? (a) an IoT device (b) not an IoT device
12. 12.Which of these is not an IoT device? (a) a fitness band with app (b) a Wi-Fi weather station (c) an app-controlled bulb (d) a paper calendar
13. 13.🔍 Which is the odd one out? (a) a plain wall switch (b) a plain table fan (c) a Wi-Fi smart plug (d) a pencil sharpener
14. 14.🔍 Which is the odd one out? (a) a Wi-Fi doorbell camera (b) a Wi-Fi weather station (c) a Wi-Fi smart plug (d) a plain table fan
15. 15.🌐 A soil sensor sends a reading to an app every 30 minutes. How many readings arrive in 1 hour?
16. 16.🌐 Is an app-controlled bulb an IoT device? (a) an IoT device (b) not an IoT device
17. 17.🔢 To get a sensor reading onto a phone, which is the FIRST step? (a) it is sent by Wi-Fi (b) the cloud stores it (c) the app shows it (d) the sensor measures
18. 18.🌐 In an IoT system, which part stores data online? (a) cloud server (b) sensor (c) microcontroller (d) phone app
19. 19.What does the microcontroller do? (a) reads values, decides (b) stores data online (c) acts on a command (d) measures the real world
20. 20.🌐 A weather station sends one reading every 60 seconds. How many readings does it send in 7 minutes?
21. 21.What does the actuator do? (a) shows data to you (b) acts on a command (c) reads values, decides (d) measures the real world
22. 22.🌐 Is a Wi-Fi weather station an IoT device? (a) an IoT device (b) not an IoT device
23. 23.🌐 Is a Wi-Fi doorbell camera an IoT device? (a) an IoT device (b) not an IoT device
24. 24.🌐 In an IoT system, which part acts on a command? (a) Wi-Fi (b) actuator (c) microcontroller (d) sensor
25. 25.🔢 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
26. 26.🌐 Each reading a sensor sends is 20 bytes. How many bytes do 90 readings take?
27. 27.🌐 In an IoT system, which part reads values, decides? (a) cloud server (b) phone app (c) actuator (d) microcontroller
28. 28.🌐 What does IoT stand for? (a) Internet of Talk (b) Input of Tools (c) Internet of Things (d) Inside of Toys
29. 29.🌐 A weather station sends one reading every 30 seconds. How many readings does it send in 1 minute?
30. 30.🔍 Which is the odd one out? (a) a paper calendar (b) a battery torch (c) a plain wall switch (d) an app-controlled bulb
31. 31.🔍 Which is the odd one out? (a) a paper calendar (b) a plain wall switch (c) a smart energy meter (d) a wind-up clock
32. 32.🌐 A weather station sends one reading every 10 seconds. How many readings does it send in 5 minutes?
33. 33.🌐 Each reading a sensor sends is 10 bytes. How many bytes do 60 readings take?
34. 34.🌐 A weather station sends one reading every 5 seconds. How many readings does it send in 8 minutes?
35. 35.🏠 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
36. 36.🌐 Is a pencil sharpener an IoT device? (a) an IoT device (b) not an IoT device
37. 37.Which of these is not an IoT device? (a) a smart energy meter (b) a Wi-Fi smart plug (c) a Wi-Fi doorbell camera (d) a wind-up clock
38. 38.🌐 In an IoT system, which part shows data to you? (a) actuator (b) microcontroller (c) phone app (d) sensor
39. 39.What does the phone app do? (a) carries the data (b) shows data to you (c) measures the real world (d) reads values, decides
40. 40.🔢 To get a sensor reading onto a phone, which is the LAST step? (a) the sensor measures (b) it is sent by Wi-Fi (c) the app shows it (d) the board reads it

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