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Electronics Worksheet: If Else with Sensors

Electronics lesson 24: If / else with sensors · Set 998 · 40 questions
TalentJR

Remember (Test, then choose): Put the reading into the condition: true → the if part, false → the else part. > means strictly more and < strictly less; an equal reading makes them false. AND: both true. OR: at least one true. In a chain, the first true condition wins.

NameDateTime takenScore ___ / 40
  1. 1.🤖 if (temperature > 33) { show “Hot” } else if (temperature > 23) { show “Warm” } else { show “Cool” }
    The temperature is 18 °C. What is shown?     (a) Hot (b) Cool (c) Warm
  2. 2.🤖 if (temperature > 32) { show “Hot” } else if (temperature > 23) { show “Warm” } else { show “Cool” }
    The temperature is 16 °C. What is shown?     (a) Cool (b) Warm (c) Hot
  3. 3.🤖 if (light < 300 OR motion) { porch lamp ON } else { porch lamp OFF }
    The light reading is 430 and motion is detected (true). What happens?     (a) porch lamp OFF (b) porch lamp ON
  4. 4.🤖 if (temperature > 36) { show “Hot” } else if (temperature > 24) { show “Warm” } else { show “Cool” }
    The temperature is 10 °C. What is shown?     (a) Warm (b) Cool (c) Hot
  5. 5.🤖 if (temperature > 37) { show “Hot” } else if (temperature > 26) { show “Warm” } else { show “Cool” }
    The temperature is 37 °C. What is shown?     (a) Hot (b) Cool (c) Warm
  6. 6.🤖 if (temperature > 38) { show “Hot” } else if (temperature > 25) { show “Warm” } else { show “Cool” }
    The temperature is 44 °C. What is shown?     (a) Cool (b) Warm (c) Hot
  7. 7.🤖 if (temperature > 30) { show “Hot” } else if (temperature > 22) { show “Warm” } else { show “Cool” }
    The temperature is 14 °C. What is shown?     (a) Cool (b) Warm (c) Hot
  8. 8.🤖 if (temperature > 31) { show “Hot” } else if (temperature > 25) { show “Warm” } else { show “Cool” }
    The temperature is 38 °C. What is shown?     (a) Cool (b) Warm (c) Hot
  9. 9.🤖 if (temperature > 25) { fan ON } else { fan OFF }
    The temperature sensor reads 22 °C. What happens?     (a) fan OFF (b) fan ON
  10. 10.🤖 if (distance < 15) { buzzer beeps } else { buzzer is silent }
    The distance sensor reads 22 cm. What happens?     (a) buzzer beeps (b) buzzer is silent
  11. 11.🤖 “if (A AND B)” is true when … (a) only A is true (b) both A and B are true (c) both are false (d) only B is true
  12. 12.🤖 In “if (temp > 30)”, what runs when temp is exactly 30? (a) the if part (b) neither part (c) both parts (d) the else part
  13. 13.🤖 if (moisture < 30) { pump ON } else { pump OFF }
    The soil moisture sensor reads 32 %. What happens?     (a) pump OFF (b) pump ON
  14. 14.🤖 if (temperature > 32) { show “Hot” } else if (temperature > 22) { show “Warm” } else { show “Cool” }
    The temperature is 21 °C. What is shown?     (a) Cool (b) Hot (c) Warm
  15. 15.🤖 if (temperature > 28) { fan ON } else { fan OFF }
    The temperature sensor reads 32 °C. What happens?     (a) fan ON (b) fan OFF
  16. 16.🤖 if (light < 300 OR motion) { porch lamp ON } else { porch lamp OFF }
    The light reading is 370 and motion is detected (true). What happens?     (a) porch lamp ON (b) porch lamp OFF
  17. 17.🤖 if (light < 200 OR motion) { porch lamp ON } else { porch lamp OFF }
    The light reading is 650 and motion is detected (true). What happens?     (a) porch lamp OFF (b) porch lamp ON
  18. 18.🤖 if (light < 500) { lamp ON } else { lamp OFF }
    The light sensor reads 441. What happens?     (a) lamp ON (b) lamp OFF
  19. 19.🤖 if (light < 300 AND motion) { porch lamp ON } else { porch lamp OFF }
    The light reading is 290 and motion is not detected (false). What happens?     (a) porch lamp OFF (b) porch lamp ON
  20. 20.🤖 if (temperature > 38) { show “Hot” } else if (temperature > 18) { show “Warm” } else { show “Cool” }
    The temperature is 12 °C. What is shown?     (a) Warm (b) Cool (c) Hot
  21. 21.🤖 if (moisture < 30) { pump ON } else { pump OFF }
    The soil moisture sensor reads 14 %. What happens?     (a) pump OFF (b) pump ON
  22. 22.🤖 if (temperature > 32) { show “Hot” } else if (temperature > 18) { show “Warm” } else { show “Cool” }
    The temperature is 19 °C. What is shown?     (a) Cool (b) Hot (c) Warm
  23. 23.🤖 if (light < 400 AND motion) { porch lamp ON } else { porch lamp OFF }
    The light reading is 160 and motion is detected (true). What happens?     (a) porch lamp ON (b) porch lamp OFF
  24. 24.🤖 if (light < 300 AND motion) { porch lamp ON } else { porch lamp OFF }
    The light reading is 390 and motion is not detected (false). What happens?     (a) porch lamp ON (b) porch lamp OFF
  25. 25.🤖 if (light < 300) { lamp ON } else { lamp OFF }
    The light sensor reads 161. What happens?     (a) lamp ON (b) lamp OFF
  26. 26.🤖 if (light < 200) { lamp ON } else { lamp OFF }
    The light sensor reads 289. What happens?     (a) lamp OFF (b) lamp ON
  27. 27.🤖 if (temperature > 25) { fan ON } else { fan OFF }
    The temperature sensor reads 33 °C. What happens?     (a) fan ON (b) fan OFF
  28. 28.🤖 if (moisture < 50) { pump ON } else { pump OFF }
    The soil moisture sensor reads 58 %. What happens?     (a) pump OFF (b) pump ON
  29. 29.🤖 if (light < 200 OR motion) { porch lamp ON } else { porch lamp OFF }
    The light reading is 320 and motion is not detected (false). What happens?     (a) porch lamp OFF (b) porch lamp ON
  30. 30.🤖 if (temperature > 33) { show “Hot” } else if (temperature > 24) { show “Warm” } else { show “Cool” }
    The temperature is 39 °C. What is shown?     (a) Warm (b) Hot (c) Cool
  31. 31.🤖 if (temperature > 38) { show “Hot” } else if (temperature > 22) { show “Warm” } else { show “Cool” }
    The temperature is 24 °C. What is shown?     (a) Hot (b) Warm (c) Cool
  32. 32.🤖 if (temperature > 30) { show “Hot” } else if (temperature > 22) { show “Warm” } else { show “Cool” }
    The temperature is 16 °C. What is shown?     (a) Hot (b) Cool (c) Warm
  33. 33.🤖 if (light < 300 OR motion) { porch lamp ON } else { porch lamp OFF }
    The light reading is 300 and motion is detected (true). What happens?     (a) porch lamp ON (b) porch lamp OFF
  34. 34.🤖 if (light < 200 OR motion) { porch lamp ON } else { porch lamp OFF }
    The light reading is 110 and motion is detected (true). What happens?     (a) porch lamp ON (b) porch lamp OFF
  35. 35.🤖 if (distance < 15) { buzzer beeps } else { buzzer is silent }
    The distance sensor reads 23 cm. What happens?     (a) buzzer is silent (b) buzzer beeps
  36. 36.🤖 if (temperature > 32) { show “Hot” } else if (temperature > 23) { show “Warm” } else { show “Cool” }
    The temperature is 45 °C. What is shown?     (a) Warm (b) Hot (c) Cool
  37. 37.🤖 if (light < 300 AND motion) { porch lamp ON } else { porch lamp OFF }
    The light reading is 590 and motion is detected (true). What happens?     (a) porch lamp ON (b) porch lamp OFF
  38. 38.🤖 if (temperature > 37) { show “Hot” } else if (temperature > 19) { show “Warm” } else { show “Cool” }
    The temperature is 10 °C. What is shown?     (a) Hot (b) Cool (c) Warm
  39. 39.🤖 if (sound > 80) { red LED ON } else { green LED ON }
    The sound sensor reads 89. What happens?     (a) green LED ON (b) red LED ON
  40. 40.🤖 if (light < 400 OR motion) { porch lamp ON } else { porch lamp OFF }
    The light reading is 380 and motion is not detected (false). What happens?     (a) porch lamp OFF (b) porch lamp ON

Answer key

  1. Cool
  2. Cool
  3. porch lamp ON
  4. Cool
  5. Warm
  6. Hot
  7. Cool
  8. Hot
  9. fan OFF
  10. buzzer is silent
  11. both A and B are true
  12. the else part
  13. pump OFF
  14. Cool
  15. fan ON
  16. porch lamp ON
  17. porch lamp ON
  18. lamp ON
  19. porch lamp OFF
  20. Cool
  21. pump ON
  22. Warm
  23. porch lamp ON
  24. porch lamp OFF
  25. lamp ON
  26. lamp OFF
  27. fan ON
  28. pump OFF
  29. porch lamp OFF
  30. Hot
  31. Warm
  32. Cool
  33. porch lamp ON
  34. porch lamp ON
  35. buzzer is silent
  36. Hot
  37. porch lamp OFF
  38. Cool
  39. red LED ON
  40. porch lamp ON

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