Electronics Worksheet: What Is IoT

Electronics lesson 27: What is IoT? · Set 224 · 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) Input of Tools (b) Inside of Toys (c) Internet of Talk (d) Internet of Things
2. 2.🌐 In an IoT system, which part reads values, decides? (a) phone app (b) actuator (c) microcontroller (d) sensor
3. 3.🌐 Each reading a sensor sends is 50 bytes. How many bytes do 50 readings take?
4. 4.🌐 A weather station sends one reading every 5 seconds. How many readings does it send in 3 minutes?
5. 5.🌐 A weather station sends one reading every 30 seconds. How many readings does it send in 8 minutes?
6. 6.🌐 How does a home IoT device usually send its data to the app? (a) by post (b) over Wi-Fi (c) through a candle (d) by shouting
7. 7.🌐 A weather station sends one reading every 20 seconds. How many readings does it send in 10 minutes?
8. 8.🌐 A weather station sends one reading every 30 seconds. How many readings does it send in 2 minutes?
9. 9.🔍 Which is the odd one out? (a) a paper calendar (b) a plain table fan (c) a plain wall switch (d) a Wi-Fi doorbell camera
10. 10.What does the phone app do? (a) carries the data (b) acts on a command (c) shows data to you (d) measures the real world
11. 11.🌐 Is a fitness band with app an IoT device? (a) an IoT device (b) not an IoT device
12. 12.🔍 Which is the odd one out? (a) an app-controlled bulb (b) a Wi-Fi doorbell camera (c) a Wi-Fi smart plug (d) a plain table fan
13. 13.🌐 A weather station sends one reading every 30 seconds. How many readings does it send in 1 minute?
14. 14.What does the actuator do? (a) reads values, decides (b) measures the real world (c) carries the data (d) acts on a command
15. 15.🔢 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
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 table fan (b) a wind-up clock (c) an app-controlled bulb (d) a battery torch
18. 18.🌐 In an IoT system, which part shows data to you? (a) Wi-Fi (b) phone app (c) cloud server (d) sensor
19. 19.What does the cloud server do? (a) stores data online (b) acts on a command (c) reads values, decides (d) measures the real world
20. 20.🌐 A weather station sends one reading every 30 seconds. How many readings does it send in 9 minutes?
21. 21.🌐 Each reading a sensor sends is 25 bytes. How many bytes do 170 readings take?
22. 22.Which of these is an IoT device? (a) a wind-up clock (b) a smart energy meter (c) a pencil sharpener (d) a plain wall switch
23. 23.🔍 Which is the odd one out? (a) an app-controlled bulb (b) a Wi-Fi doorbell camera (c) a wind-up clock (d) a smart energy meter
24. 24.What does the Wi-Fi link do? (a) acts on a command (b) reads values, decides (c) carries the data (d) stores data online
25. 25.🌐 A weather station sends one reading every 5 seconds. How many readings does it send in 5 minutes?
26. 26.Which of these is not an IoT device? (a) a fitness band with app (b) a paper calendar (c) an app-controlled bulb (d) a Wi-Fi smart plug
27. 27.🌐 A soil sensor sends a reading to an app every 15 minutes. How many readings arrive in 6 hours?
28. 28.What does the sensor do? (a) stores data online (b) measures the real world (c) acts on a command (d) shows data to you
29. 29.🏠 Which is a smart-home example? (a) lights on from an app (b) a hand fan (c) a candle in a jar (d) a printed map
30. 30.Which of these is not an IoT device? (a) a smart energy meter (b) a Wi-Fi smart plug (c) a plain table fan (d) an app-controlled bulb
31. 31.🔍 Which is the odd one out? (a) a smart energy meter (b) a plain wall switch (c) a Wi-Fi weather station (d) a fitness band with app
32. 32.🔢 To get a sensor reading onto a phone, what comes right after “the board reads it”? (a) the cloud stores it (b) the app shows it (c) it is sent by Wi-Fi (d) the sensor measures
33. 33.🔢 To get a sensor reading onto a phone, which comes first: “the sensor measures” or “the app shows it”? (a) the sensor measures (b) the app shows it
34. 34.🔢 To get a sensor reading onto a phone, which is the FIRST step? (a) the sensor measures (b) it is sent by Wi-Fi (c) the board reads it (d) the app shows it
35. 35.🌐 A soil sensor sends a reading to an app every 15 minutes. How many readings arrive in 4 hours?
36. 36.🌐 In an IoT system, which part stores data online? (a) phone app (b) cloud server (c) Wi-Fi (d) sensor
37. 37.🌐 A weather station sends one reading every 10 seconds. How many readings does it send in 1 minute?
38. 38.🌐 A soil sensor sends a reading to an app every 5 minutes. How many readings arrive in 3 hours?
39. 39.🌐 A weather station sends one reading every 20 seconds. How many readings does it send in 2 minutes?
40. 40.🔢 To get a sensor reading onto a phone, what comes right after “the sensor measures”? (a) the app shows it (b) the cloud stores it (c) it is sent by Wi-Fi (d) the board reads it

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