Electronics Worksheet: What Is IoT

Electronics lesson 27: What is IoT? · Set 654 · 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.🌐 A soil sensor sends a reading to an app every 20 minutes. How many readings arrive in 3 hours?
2. 2.🏠 Which is a smart-home example? (a) lights on from an app (b) a candle in a jar (c) a hand fan (d) a printed map
3. 3.What does the cloud server do? (a) measures the real world (b) carries the data (c) shows data to you (d) stores data online
4. 4.🔍 Which is the odd one out? (a) a Wi-Fi smart plug (b) a pencil sharpener (c) a Wi-Fi doorbell camera (d) a smart energy meter
5. 5.🔍 Which is the odd one out? (a) a pencil sharpener (b) a plain table fan (c) a paper calendar (d) a Wi-Fi weather station
6. 6.🌐 A soil sensor sends a reading to an app every 5 minutes. How many readings arrive in 4 hours?
7. 7.🔍 Which is the odd one out? (a) a Wi-Fi smart plug (b) a Wi-Fi doorbell camera (c) an app-controlled bulb (d) a paper calendar
8. 8.🔍 Which is the odd one out? (a) a paper calendar (b) a Wi-Fi smart plug (c) a pencil sharpener (d) a plain table fan
9. 9.🔍 Which is the odd one out? (a) a pencil sharpener (b) a wind-up clock (c) an app-controlled bulb (d) a paper calendar
10. 10.🌐 A soil sensor sends a reading to an app every 5 minutes. How many readings arrive in 1 hour?
11. 11.🔍 Which is the odd one out? (a) an app-controlled bulb (b) a plain table fan (c) a Wi-Fi smart plug (d) a Wi-Fi doorbell camera
12. 12.🌐 Each reading a sensor sends is 25 bytes. How many bytes do 200 readings take?
13. 13.🔢 To get a sensor reading onto a phone, which is the FIRST step? (a) the board reads it (b) the sensor measures (c) it is sent by Wi-Fi (d) the app shows it
14. 14.🌐 A weather station sends one reading every 20 seconds. How many readings does it send in 10 minutes?
15. 15.🌐 A weather station sends one reading every 15 seconds. How many readings does it send in 6 minutes?
16. 16.🌐 A weather station sends one reading every 15 seconds. How many readings does it send in 4 minutes?
17. 17.🌐 A weather station sends one reading every 10 seconds. How many readings does it send in 3 minutes?
18. 18.Which of these is not an IoT device? (a) a Wi-Fi doorbell camera (b) an app-controlled bulb (c) a smart energy meter (d) a battery torch
19. 19.🌐 Is a Wi-Fi weather station an IoT device? (a) not an IoT device (b) an IoT device
20. 20.🌐 A weather station sends one reading every 30 seconds. How many readings does it send in 1 minute?
21. 21.🌐 A weather station sends one reading every 60 seconds. How many readings does it send in 7 minutes?
22. 22.🌐 How does a home IoT device usually send its data to the app? (a) over Wi-Fi (b) by post (c) through a candle (d) by shouting
23. 23.🌐 In an IoT system, which part shows data to you? (a) sensor (b) actuator (c) phone app (d) microcontroller
24. 24.🌐 Each reading a sensor sends is 25 bytes. How many bytes do 100 readings take?
25. 25.🌐 Is a paper calendar an IoT device? (a) an IoT device (b) not an IoT device
26. 26.🌐 A soil sensor sends a reading to an app every 30 minutes. How many readings arrive in 3 hours?
27. 27.🌐 What does IoT stand for? (a) Inside of Toys (b) Input of Tools (c) Internet of Things (d) Internet of Talk
28. 28.🔢 To get a sensor reading onto a phone, what comes right after “the sensor measures”? (a) it is sent by Wi-Fi (b) the app shows it (c) the board reads it (d) the cloud stores it
29. 29.Which of these is not an IoT device? (a) a fitness band with app (b) a Wi-Fi weather station (c) a paper calendar (d) an app-controlled bulb
30. 30.🔢 To get a sensor reading onto a phone, which comes first: “the board reads it” or “the app shows it”? (a) the app shows it (b) the board reads it
31. 31.🌐 In an IoT system, which part stores data online? (a) sensor (b) Wi-Fi (c) cloud server (d) microcontroller
32. 32.What does the Wi-Fi link do? (a) reads values, decides (b) stores data online (c) carries the data (d) acts on a command
33. 33.🌐 In an IoT system, which part acts on a command? (a) actuator (b) Wi-Fi (c) microcontroller (d) sensor
34. 34.🌐 Each reading a sensor sends is 20 bytes. How many bytes do 40 readings take?
35. 35.🔍 Which is the odd one out? (a) a Wi-Fi smart plug (b) a smart energy meter (c) a plain wall switch (d) a fitness band with app
36. 36.🌐 Is a Wi-Fi smart plug an IoT device? (a) an IoT device (b) not an IoT device
37. 37.🌐 A weather station sends one reading every 15 seconds. How many readings does it send in 1 minute?
38. 38.🌐 Is a battery torch an IoT device? (a) not an IoT device (b) an IoT device
39. 39.🌐 In an IoT system, which part measures the real world? (a) cloud server (b) actuator (c) microcontroller (d) sensor
40. 40.🌐 Each reading a sensor sends is 25 bytes. How many bytes do 60 readings take?

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