Electronics Worksheet: What Is IoT

Electronics lesson 27: What is IoT? · Set 96 · 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.🌐 Each reading a sensor sends is 50 bytes. How many bytes do 170 readings take?
2. 2.🌐 In an IoT system, which part measures the real world? (a) cloud server (b) actuator (c) phone app (d) sensor
3. 3.🌐 How does a home IoT device usually send its data to the app? (a) by post (b) through a candle (c) over Wi-Fi (d) by shouting
4. 4.🌐 Each reading a sensor sends is 50 bytes. How many bytes do 50 readings take?
5. 5.🔢 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
6. 6.🌐 A weather station sends one reading every 30 seconds. How many readings does it send in 2 minutes?
7. 7.What does the cloud server do? (a) shows data to you (b) stores data online (c) carries the data (d) measures the real world
8. 8.🌐 In an IoT system, which part carries the data? (a) actuator (b) sensor (c) phone app (d) Wi-Fi
9. 9.🌐 A weather station sends one reading every 5 seconds. How many readings does it send in 5 minutes?
10. 10.What does the sensor do? (a) acts on a command (b) stores data online (c) measures the real world (d) reads values, decides
11. 11.🌐 Is a Wi-Fi doorbell camera an IoT device? (a) not an IoT device (b) an IoT device
12. 12.🔍 Which is the odd one out? (a) a battery torch (b) a plain wall switch (c) a pencil sharpener (d) a Wi-Fi weather station
13. 13.🌐 A soil sensor sends a reading to an app every 20 minutes. How many readings arrive in 6 hours?
14. 14.🔢 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 app shows it (c) the cloud stores it (d) the sensor measures
15. 15.🔢 To get a sensor reading onto a phone, what comes right after “it is sent by Wi-Fi”? (a) the app shows it (b) the sensor measures (c) the cloud stores it (d) the board reads it
16. 16.What does the phone app do? (a) reads values, decides (b) shows data to you (c) stores data online (d) carries the data
17. 17.What does the microcontroller do? (a) measures the real world (b) stores data online (c) reads values, decides (d) carries the data
18. 18.🔢 To get a sensor reading onto a phone, which comes first: “the cloud stores it” or “the app shows it”? (a) the cloud stores it (b) the app shows it
19. 19.🌐 A weather station sends one reading every 60 seconds. How many readings does it send in 2 minutes?
20. 20.🔍 Which is the odd one out? (a) a wind-up clock (b) a pencil sharpener (c) a fitness band with app (d) a plain wall switch
21. 21.🌐 A weather station sends one reading every 5 seconds. How many readings does it send in 1 minute?
22. 22.🌐 A weather station sends one reading every 20 seconds. How many readings does it send in 8 minutes?
23. 23.Which of these is an IoT device? (a) a plain wall switch (b) a battery torch (c) a pencil sharpener (d) a Wi-Fi doorbell camera
24. 24.🌐 What does IoT stand for? (a) Internet of Talk (b) Input of Tools (c) Internet of Things (d) Inside of Toys
25. 25.🌐 Is a battery torch an IoT device? (a) an IoT device (b) not an IoT device
26. 26.🌐 A weather station sends one reading every 20 seconds. How many readings does it send in 7 minutes?
27. 27.🌐 A soil sensor sends a reading to an app every 20 minutes. How many readings arrive in 1 hour?
28. 28.🌐 Each reading a sensor sends is 10 bytes. How many bytes do 120 readings take?
29. 29.What does the Wi-Fi link do? (a) measures the real world (b) acts on a command (c) shows data to you (d) carries the data
30. 30.🌐 Is a Wi-Fi weather station an IoT device? (a) an IoT device (b) not an IoT device
31. 31.🌐 A soil sensor sends a reading to an app every 30 minutes. How many readings arrive in 6 hours?
32. 32.Which of these is an IoT device? (a) a paper calendar (b) a Wi-Fi smart plug (c) a plain wall switch (d) a plain table fan
33. 33.🌐 In an IoT system, which part reads values, decides? (a) sensor (b) microcontroller (c) Wi-Fi (d) cloud server
34. 34.🌐 A weather station sends one reading every 5 seconds. How many readings does it send in 3 minutes?
35. 35.🌐 Each reading a sensor sends is 50 bytes. How many bytes do 90 readings take?
36. 36.🌐 Each reading a sensor sends is 25 bytes. How many bytes do 110 readings take?
37. 37.🌐 A soil sensor sends a reading to an app every 5 minutes. How many readings arrive in 6 hours?
38. 38.Which of these is not an IoT device? (a) an app-controlled bulb (b) a Wi-Fi weather station (c) a smart energy meter (d) a plain table fan
39. 39.🌐 Is a paper calendar an IoT device? (a) not an IoT device (b) an IoT device
40. 40.🌐 A soil sensor sends a reading to an app every 15 minutes. How many readings arrive in 1 hour?

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