Electronics Worksheet: What Is IoT

Electronics lesson 27: What is IoT? · Set 884 · 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 5 minutes. How many readings arrive in 5 hours?
2. 2.🌐 A soil sensor sends a reading to an app every 10 minutes. How many readings arrive in 6 hours?
3. 3.🌐 A soil sensor sends a reading to an app every 5 minutes. How many readings arrive in 1 hour?
4. 4.🔢 To get a sensor reading onto a phone, which comes first: “the sensor measures” or “it is sent by Wi-Fi”? (a) the sensor measures (b) it is sent by Wi-Fi
5. 5.🔢 To get a sensor reading onto a phone, what comes right after “the cloud stores it”? (a) the board reads it (b) the app shows it (c) it is sent by Wi-Fi (d) the sensor measures
6. 6.🌐 What does IoT stand for? (a) Input of Tools (b) Inside of Toys (c) Internet of Talk (d) Internet of Things
7. 7.🌐 Is a plain table fan an IoT device? (a) an IoT device (b) not an IoT device
8. 8.🔍 Which is the odd one out? (a) a Wi-Fi doorbell camera (b) an app-controlled bulb (c) a Wi-Fi smart plug (d) a paper calendar
9. 9.🔢 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 app shows it
10. 10.🔍 Which is the odd one out? (a) a Wi-Fi smart plug (b) a smart energy meter (c) a fitness band with app (d) a wind-up clock
11. 11.🌐 Is a fitness band with app an IoT device? (a) an IoT device (b) not an IoT device
12. 12.Which of these is an IoT device? (a) a paper calendar (b) a battery torch (c) a plain table fan (d) a Wi-Fi smart plug
13. 13.🌐 Is a battery torch an IoT device? (a) not an IoT device (b) an IoT device
14. 14.🌐 Each reading a sensor sends is 50 bytes. How many bytes do 150 readings take?
15. 15.What does the sensor do? (a) reads values, decides (b) acts on a command (c) shows data to you (d) measures the real world
16. 16.🌐 In an IoT system, which part acts on a command? (a) phone app (b) cloud server (c) microcontroller (d) actuator
17. 17.What does the microcontroller do? (a) carries the data (b) stores data online (c) reads values, decides (d) shows data to you
18. 18.What does the phone app do? (a) shows data to you (b) acts on a command (c) measures the real world (d) reads values, decides
19. 19.Which of these is an IoT device? (a) a battery torch (b) a plain table fan (c) a pencil sharpener (d) a Wi-Fi doorbell camera
20. 20.🌐 A soil sensor sends a reading to an app every 10 minutes. How many readings arrive in 1 hour?
21. 21.What does the actuator do? (a) stores data online (b) carries the data (c) reads values, decides (d) acts on a command
22. 22.🌐 A soil sensor sends a reading to an app every 15 minutes. How many readings arrive in 2 hours?
23. 23.🌐 Each reading a sensor sends is 10 bytes. How many bytes do 40 readings take?
24. 24.🌐 Is a Wi-Fi smart plug an IoT device? (a) an IoT device (b) not an IoT device
25. 25.🏠 Which is a smart-home example? (a) a candle in a jar (b) a hand fan (c) lights on from an app (d) a printed map
26. 26.🌐 In an IoT system, which part reads values, decides? (a) sensor (b) Wi-Fi (c) microcontroller (d) phone app
27. 27.🌐 Each reading a sensor sends is 20 bytes. How many bytes do 170 readings take?
28. 28.🌐 In an IoT system, which part stores data online? (a) cloud server (b) Wi-Fi (c) phone app (d) sensor
29. 29.🌐 Is a paper calendar an IoT device? (a) not an IoT device (b) an IoT device
30. 30.🌐 A weather station sends one reading every 15 seconds. How many readings does it send in 7 minutes?
31. 31.🌐 A weather station sends one reading every 5 seconds. How many readings does it send in 10 minutes?
32. 32.🌐 A weather station sends one reading every 5 seconds. How many readings does it send in 7 minutes?
33. 33.🔢 To get a sensor reading onto a phone, which comes first: “the board reads it” or “it is sent by Wi-Fi”? (a) the board reads it (b) it is sent by Wi-Fi
34. 34.🌐 A weather station sends one reading every 20 seconds. How many readings does it send in 3 minutes?
35. 35.🔢 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
36. 36.🔍 Which is the odd one out? (a) a wind-up clock (b) a paper calendar (c) a fitness band with app (d) a battery torch
37. 37.🌐 A soil sensor sends a reading to an app every 5 minutes. How many readings arrive in 2 hours?
38. 38.Which of these is not an IoT device? (a) a plain table fan (b) a smart energy meter (c) a Wi-Fi smart plug (d) a Wi-Fi doorbell camera
39. 39.🔍 Which is the odd one out? (a) a battery torch (b) a plain wall switch (c) a plain table fan (d) a Wi-Fi weather station
40. 40.🔍 Which is the odd one out? (a) a battery torch (b) a pencil sharpener (c) a Wi-Fi doorbell camera (d) a wind-up clock

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