Electronics Worksheet: What Is IoT

Electronics lesson 27: What is IoT? · Set 51 · 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.🌐 What does IoT stand for? (a) Internet of Things (b) Inside of Toys (c) Input of Tools (d) Internet of Talk
2. 2.🌐 A weather station sends one reading every 20 seconds. How many readings does it send in 3 minutes?
3. 3.🔍 Which is the odd one out? (a) a pencil sharpener (b) a Wi-Fi doorbell camera (c) a smart energy meter (d) a Wi-Fi smart plug
4. 4.🌐 A soil sensor sends a reading to an app every 10 minutes. How many readings arrive in 5 hours?
5. 5.🔍 Which is the odd one out? (a) a battery torch (b) a paper calendar (c) a smart energy meter (d) a pencil sharpener
6. 6.🌐 A weather station sends one reading every 20 seconds. How many readings does it send in 7 minutes?
7. 7.🌐 Each reading a sensor sends is 10 bytes. How many bytes do 170 readings take?
8. 8.🔢 To get a sensor reading onto a phone, which is the LAST step? (a) the board reads it (b) it is sent by Wi-Fi (c) the sensor measures (d) the app shows it
9. 9.🔢 To get a sensor reading onto a phone, which comes first: “the cloud stores it” or “the sensor measures”? (a) the cloud stores it (b) the sensor measures
10. 10.What does the actuator do? (a) carries the data (b) shows data to you (c) stores data online (d) acts on a command
11. 11.🌐 A soil sensor sends a reading to an app every 5 minutes. How many readings arrive in 3 hours?
12. 12.🌐 A soil sensor sends a reading to an app every 30 minutes. How many readings arrive in 5 hours?
13. 13.🌐 Is a wind-up clock an IoT device? (a) an IoT device (b) not an IoT device
14. 14.🔍 Which is the odd one out? (a) a Wi-Fi weather station (b) a Wi-Fi doorbell camera (c) a wind-up clock (d) a fitness band with app
15. 15.What does the microcontroller do? (a) measures the real world (b) reads values, decides (c) shows data to you (d) carries the data
16. 16.🌐 How does a home IoT device usually send its data to the app? (a) by shouting (b) by post (c) through a candle (d) over Wi-Fi
17. 17.🔢 To get a sensor reading onto a phone, what comes right after “the sensor measures”? (a) the app shows it (b) it is sent by Wi-Fi (c) the board reads it (d) the cloud stores it
18. 18.What does the cloud server do? (a) stores data online (b) acts on a command (c) shows data to you (d) carries the data
19. 19.🌐 Is a plain wall switch an IoT device? (a) not an IoT device (b) an IoT device
20. 20.🔢 To get a sensor reading onto a phone, what comes right after “the cloud stores it”? (a) the app shows it (b) it is sent by Wi-Fi (c) the board reads it (d) the sensor measures
21. 21.🌐 Is a pencil sharpener an IoT device? (a) not an IoT device (b) an IoT device
22. 22.🔍 Which is the odd one out? (a) a paper calendar (b) a wind-up clock (c) an app-controlled bulb (d) a battery torch
23. 23.🌐 Is a Wi-Fi smart plug an IoT device? (a) an IoT device (b) not an IoT device
24. 24.🌐 In an IoT system, which part carries the data? (a) phone app (b) sensor (c) Wi-Fi (d) actuator
25. 25.🌐 A weather station sends one reading every 15 seconds. How many readings does it send in 2 minutes?
26. 26.🌐 Is a smart energy meter an IoT device? (a) an IoT device (b) not an IoT device
27. 27.🔍 Which is the odd one out? (a) a plain wall switch (b) a pencil sharpener (c) a wind-up clock (d) a Wi-Fi doorbell camera
28. 28.🔢 To get a sensor reading onto a phone, which comes first: “the cloud stores it” or “it is sent by Wi-Fi”? (a) it is sent by Wi-Fi (b) the cloud stores it
29. 29.What does the Wi-Fi link do? (a) shows data to you (b) carries the data (c) acts on a command (d) reads values, decides
30. 30.🔢 To get a sensor reading onto a phone, what comes right after “the board reads it”? (a) it is sent by Wi-Fi (b) the sensor measures (c) the app shows it (d) the cloud stores it
31. 31.Which of these is an IoT device? (a) a plain wall switch (b) a plain table fan (c) a paper calendar (d) a fitness band with app
32. 32.🔍 Which is the odd one out? (a) a battery torch (b) a Wi-Fi smart plug (c) a wind-up clock (d) a plain wall switch
33. 33.🌐 A soil sensor sends a reading to an app every 15 minutes. How many readings arrive in 5 hours?
34. 34.🌐 A weather station sends one reading every 5 seconds. How many readings does it send in 4 minutes?
35. 35.🌐 Is a Wi-Fi weather station an IoT device? (a) an IoT device (b) not an IoT device
36. 36.🌐 Each reading a sensor sends is 50 bytes. How many bytes do 50 readings take?
37. 37.🌐 In an IoT system, which part measures the real world? (a) actuator (b) Wi-Fi (c) phone app (d) sensor
38. 38.🌐 Each reading a sensor sends is 20 bytes. How many bytes do 30 readings take?
39. 39.🏠 Which is a smart-home example? (a) a hand fan (b) a candle in a jar (c) a printed map (d) lights on from an app
40. 40.🌐 Each reading a sensor sends is 50 bytes. How many bytes do 180 readings take?

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