Electronics Worksheet: What Is IoT

Electronics lesson 27: What is IoT? · Set 1 · 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 comes first: “the app shows it” or “the board reads it”? (a) the app shows it (b) the board reads it
2. 2.🌐 A weather station sends one reading every 10 seconds. How many readings does it send in 3 minutes?
3. 3.🌐 A soil sensor sends a reading to an app every 10 minutes. How many readings arrive in 5 hours?
4. 4.Which of these is not an IoT device? (a) a plain wall switch (b) a fitness band with app (c) a smart energy meter (d) a Wi-Fi doorbell camera
5. 5.🌐 A soil sensor sends a reading to an app every 15 minutes. How many readings arrive in 3 hours?
6. 6.What does the Wi-Fi link do? (a) shows data to you (b) carries the data (c) acts on a command (d) measures the real world
7. 7.🌐 In an IoT system, which part reads values, decides? (a) microcontroller (b) phone app (c) Wi-Fi (d) cloud server
8. 8.🔢 To get a sensor reading onto a phone, which comes first: “the board reads it” or “the sensor measures”? (a) the sensor measures (b) the board reads it
9. 9.🌐 A soil sensor sends a reading to an app every 15 minutes. How many readings arrive in 5 hours?
10. 10.Which of these is not an IoT device? (a) a smart energy meter (b) an app-controlled bulb (c) a pencil sharpener (d) a Wi-Fi smart plug
11. 11.🌐 How does a home IoT device usually send its data to the app? (a) by shouting (b) through a candle (c) by post (d) over Wi-Fi
12. 12.🌐 In an IoT system, which part carries the data? (a) phone app (b) sensor (c) Wi-Fi (d) actuator
13. 13.🔍 Which is the odd one out? (a) a Wi-Fi doorbell camera (b) a fitness band with app (c) an app-controlled bulb (d) a plain table fan
14. 14.🌐 In an IoT system, which part acts on a command? (a) microcontroller (b) sensor (c) Wi-Fi (d) actuator
15. 15.What does the actuator do? (a) reads values, decides (b) stores data online (c) measures the real world (d) acts on a command
16. 16.🌐 Is a pencil sharpener an IoT device? (a) not an IoT device (b) an IoT device
17. 17.🔍 Which is the odd one out? (a) a plain wall switch (b) a Wi-Fi doorbell camera (c) a wind-up clock (d) a plain table fan
18. 18.🔢 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
19. 19.🔢 To get a sensor reading onto a phone, which comes first: “the cloud stores it” or “the app shows it”? (a) the app shows it (b) the cloud stores it
20. 20.🌐 A weather station sends one reading every 30 seconds. How many readings does it send in 7 minutes?
21. 21.🔢 To get a sensor reading onto a phone, which comes first: “the sensor measures” or “the board reads it”? (a) the board reads it (b) the sensor measures
22. 22.🌐 A weather station sends one reading every 60 seconds. How many readings does it send in 4 minutes?
23. 23.🔍 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 pencil sharpener
24. 24.🌐 A weather station sends one reading every 30 seconds. How many readings does it send in 1 minute?
25. 25.🌐 A soil sensor sends a reading to an app every 30 minutes. How many readings arrive in 6 hours?
26. 26.🌐 Each reading a sensor sends is 20 bytes. How many bytes do 140 readings take?
27. 27.🌐 In an IoT system, which part measures the real world? (a) cloud server (b) actuator (c) microcontroller (d) sensor
28. 28.🔢 To get a sensor reading onto a phone, what comes right after “it is sent by Wi-Fi”? (a) the sensor measures (b) the board reads it (c) the app shows it (d) the cloud stores it
29. 29.🌐 A soil sensor sends a reading to an app every 10 minutes. How many readings arrive in 2 hours?
30. 30.🌐 A soil sensor sends a reading to an app every 20 minutes. How many readings arrive in 2 hours?
31. 31.Which of these is an IoT device? (a) an app-controlled bulb (b) a wind-up clock (c) a paper calendar (d) a pencil sharpener
32. 32.🌐 Each reading a sensor sends is 25 bytes. How many bytes do 160 readings take?
33. 33.What does the sensor do? (a) acts on a command (b) stores data online (c) carries the data (d) measures the real world
34. 34.🔢 To get a sensor reading onto a phone, what comes right after “the cloud stores it”? (a) the app shows it (b) the board reads it (c) it is sent by Wi-Fi (d) the sensor measures
35. 35.🌐 Is a fitness band with app an IoT device? (a) an IoT device (b) not an IoT device
36. 36.Which of these is not an IoT device? (a) a plain table fan (b) a Wi-Fi doorbell camera (c) a Wi-Fi weather station (d) a smart energy meter
37. 37.🌐 Is a smart energy meter an IoT device? (a) not an IoT device (b) an IoT device
38. 38.🌐 What does IoT stand for? (a) Internet of Things (b) Internet of Talk (c) Inside of Toys (d) Input of Tools
39. 39.🔍 Which is the odd one out? (a) a plain wall switch (b) a wind-up clock (c) a plain table fan (d) a Wi-Fi weather station
40. 40.🌐 Is a Wi-Fi doorbell camera an IoT device? (a) an IoT device (b) not an IoT device

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