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Electronics Worksheet: If Else with Sensors

Electronics lesson 24: If / else with sensors · Set 652 · 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 > 22) { show “Warm” } else { show “Cool” }
    The temperature is 44 °C. What is shown?     (a) Cool (b) Warm (c) Hot
  2. 2.🤖 if (temperature > 32) { show “Hot” } else if (temperature > 21) { show “Warm” } else { show “Cool” }
    The temperature is 28 °C. What is shown?     (a) Hot (b) Cool (c) Warm
  3. 3.🤖 if (light < 400) { lamp ON } else { lamp OFF }
    The light sensor reads 330. What happens?     (a) lamp ON (b) lamp OFF
  4. 4.🤖 if (light < 200 OR motion) { porch lamp ON } else { porch lamp OFF }
    The light reading is 520 and motion is not detected (false). What happens?     (a) porch lamp OFF (b) porch lamp ON
  5. 5.🤖 if (temperature > 35) { show “Hot” } else if (temperature > 20) { show “Warm” } else { show “Cool” }
    The temperature is 20 °C. What is shown?     (a) Warm (b) Hot (c) Cool
  6. 6.🤖 if (light < 200 OR motion) { porch lamp ON } else { porch lamp OFF }
    The light reading is 450 and motion is not detected (false). What happens?     (a) porch lamp ON (b) porch lamp OFF
  7. 7.🤖 In “if (temp > 30)”, what runs when temp is exactly 30? (a) the if part (b) both parts (c) the else part (d) neither part
  8. 8.🤖 “if (A AND B)” is true when … (a) only B is true (b) both A and B are true (c) both are false (d) only A is true
  9. 9.🤖 if (light < 300 AND motion) { porch lamp ON } else { porch lamp OFF }
    The light reading is 220 and motion is not detected (false). What happens?     (a) porch lamp OFF (b) porch lamp ON
  10. 10.🤖 if (distance < 20) { buzzer beeps } else { buzzer is silent }
    The distance sensor reads 27 cm. What happens?     (a) buzzer beeps (b) buzzer is silent
  11. 11.🤖 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 ON (b) porch lamp OFF
  12. 12.🤖 if (temperature > 32) { show “Hot” } else if (temperature > 19) { show “Warm” } else { show “Cool” }
    The temperature is 32 °C. What is shown?     (a) Warm (b) Hot (c) Cool
  13. 13.🤖 if (temperature > 35) { show “Hot” } else if (temperature > 25) { show “Warm” } else { show “Cool” }
    The temperature is 37 °C. What is shown?     (a) Warm (b) Hot (c) Cool
  14. 14.🤖 if (temperature > 36) { show “Hot” } else if (temperature > 18) { show “Warm” } else { show “Cool” }
    The temperature is 26 °C. What is shown?     (a) Cool (b) Warm (c) Hot
  15. 15.🤖 if (light < 400 AND motion) { porch lamp ON } else { porch lamp OFF }
    The light reading is 460 and motion is detected (true). What happens?     (a) porch lamp ON (b) porch lamp OFF
  16. 16.🤖 if (light < 200 OR motion) { porch lamp ON } else { porch lamp OFF }
    The light reading is 420 and motion is not detected (false). What happens?     (a) porch lamp ON (b) porch lamp OFF
  17. 17.🤖 if (light < 500) { lamp ON } else { lamp OFF }
    The light sensor reads 481. What happens?     (a) lamp ON (b) lamp OFF
  18. 18.🤖 if (light < 300 AND motion) { porch lamp ON } else { porch lamp OFF }
    The light reading is 230 and motion is detected (true). What happens?     (a) porch lamp OFF (b) porch lamp ON
  19. 19.🤖 if (temperature > 37) { show “Hot” } else if (temperature > 19) { show “Warm” } else { show “Cool” }
    The temperature is 22 °C. What is shown?     (a) Cool (b) Hot (c) Warm
  20. 20.🤖 if (light < 500) { lamp ON } else { lamp OFF }
    The light sensor reads 596. What happens?     (a) lamp OFF (b) lamp ON
  21. 21.🤖 if (temperature > 37) { show “Hot” } else if (temperature > 23) { show “Warm” } else { show “Cool” }
    The temperature is 13 °C. What is shown?     (a) Cool (b) Warm (c) Hot
  22. 22.🤖 if (temperature > 35) { show “Hot” } else if (temperature > 22) { show “Warm” } else { show “Cool” }
    The temperature is 29 °C. What is shown?     (a) Cool (b) Hot (c) Warm
  23. 23.🤖 if (temperature > 35) { show “Hot” } else if (temperature > 23) { show “Warm” } else { show “Cool” }
    The temperature is 33 °C. What is shown?     (a) Cool (b) Warm (c) Hot
  24. 24.🤖 if (light < 300 OR motion) { porch lamp ON } else { porch lamp OFF }
    The light reading is 50 and motion is detected (true). What happens?     (a) porch lamp OFF (b) porch lamp ON
  25. 25.🤖 if (moisture < 30) { pump ON } else { pump OFF }
    The soil moisture sensor reads 33 %. What happens?     (a) pump OFF (b) pump ON
  26. 26.🤖 if (temperature > 38) { show “Hot” } else if (temperature > 18) { show “Warm” } else { show “Cool” }
    The temperature is 39 °C. What is shown?     (a) Hot (b) Cool (c) Warm
  27. 27.🤖 if (temperature > 25) { fan ON } else { fan OFF }
    The temperature sensor reads 30 °C. What happens?     (a) fan ON (b) fan OFF
  28. 28.🤖 if (moisture < 30) { pump ON } else { pump OFF }
    The soil moisture sensor reads 24 %. What happens?     (a) pump OFF (b) pump ON
  29. 29.🤖 if (light < 300 OR motion) { porch lamp ON } else { porch lamp OFF }
    The light reading is 400 and motion is not detected (false). What happens?     (a) porch lamp ON (b) porch lamp OFF
  30. 30.🤖 if (distance < 15) { buzzer beeps } else { buzzer is silent }
    The distance sensor reads 18 cm. What happens?     (a) buzzer beeps (b) buzzer is silent
  31. 31.🤖 if (distance < 15) { buzzer beeps } else { buzzer is silent }
    The distance sensor reads 21 cm. What happens?     (a) buzzer beeps (b) buzzer is silent
  32. 32.🤖 if (light < 200 AND motion) { porch lamp ON } else { porch lamp OFF }
    The light reading is 220 and motion is not detected (false). What happens?     (a) porch lamp OFF (b) porch lamp ON
  33. 33.🤖 if (temperature > 30) { fan ON } else { fan OFF }
    The temperature sensor reads 36 °C. What happens?     (a) fan ON (b) fan OFF
  34. 34.🤖 if (light < 200) { lamp ON } else { lamp OFF }
    The light sensor reads 151. What happens?     (a) lamp ON (b) lamp OFF
  35. 35.🤖 if (temperature > 30) { fan ON } else { fan OFF }
    The temperature sensor reads 25 °C. What happens?     (a) fan ON (b) fan OFF
  36. 36.🤖 if (temperature > 32) { show “Hot” } else if (temperature > 21) { show “Warm” } else { show “Cool” }
    The temperature is 37 °C. What is shown?     (a) Hot (b) Warm (c) Cool
  37. 37.🤖 if (light < 500) { lamp ON } else { lamp OFF }
    The light sensor reads 617. What happens?     (a) lamp ON (b) lamp OFF
  38. 38.🤖 if (light < 400) { lamp ON } else { lamp OFF }
    The light sensor reads 480. What happens?     (a) lamp OFF (b) lamp ON
  39. 39.🤖 if (light < 200 OR motion) { porch lamp ON } else { porch lamp OFF }
    The light reading is 230 and motion is not detected (false). What happens?     (a) porch lamp ON (b) porch lamp OFF
  40. 40.🤖 if (temperature > 38) { show “Hot” } else if (temperature > 22) { show “Warm” } else { show “Cool” }
    The temperature is 25 °C. What is shown?     (a) Warm (b) Hot (c) Cool

Answer key

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

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