Aha Trivia Stuff Everyone Should Know

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Stuff Every Plumbing Scout Should Know: free practice in 30-second cards

Stuff Every Plumbing Scout Should Know

Practice facts for the Plumbing merit badge. Not an official Scouting America credential.

Start Stuff Every Plumbing Scout Should Know ⚡ Today's sprint 🎙️ Voice mode

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Free to start, no sign-up. 64 cards so far. One Knowledge Score and day streak across all your courses.

Questions people ask

Is this practice test free?

Yes. The first 50 cards are free for everyone with no sign-up, each with the answer, why it is right and its sources. Aha Trivia members get all 64 cards and timed practice exams.

How many practice questions are there?

64 practice questions so far. Each one is a 3-choice card that takes about 30 seconds, and the course grows as new cards pass our source checks.

Where do the answers come from?

Every card lists the sources it was checked against, and each answer explains why it is right. If you think an answer is wrong, tap "Challenge this answer" in the game and it gets reviewed.

Can I study in the car?

Yes. Voice mode reads the questions out loud and you answer by voice.

Try 3 cards

  1. Why is a working plumbing system important for a family's health?
    Show the answer

    It keeps drinking water clean and carries waste away. Plumbing infrastructure is critical to public health and sanitation by delivering safe water and removing waste.

  2. What does a home drainage system mainly do?
    Show the answer

    Removes wastewater from the building. Drainage systems carry wastewater away, while vents help the system work properly.

  3. What is the purpose of a vent in a plumbing drainage system?
    Show the answer

    To let air into the drain system. Vents let air into drain lines so wastewater can flow smoothly and gases can escape.

All 64 practice questions

The first 50 are free, with the answer, why it's right and the official sources. The other 14 (🔒) open with a membership (every test). Or play them as a game and track what you've learned.

Show all 64 questions
  1. Why is a working plumbing system important for a family's health?
  2. What does a home drainage system mainly do?
  3. What is the purpose of a vent in a plumbing drainage system?
  4. What is a trap in plumbing?
  5. What is a coupling used for in plumbing?
  6. What does a tee fitting do?
  7. What is an elbow fitting used for?
  8. What is a nipple in plumbing terms?
  9. What is a union fitting designed to allow?
  10. What is the job of a water meter?
  11. What is flux used for when soldering copper pipe?
  12. What is solder used for in copper plumbing?
  13. What does a plunger, or rubber force cup, do?
  14. What is a washer used for in a faucet?
  15. What does a retaining nut do on a plumbing fixture?
  16. Which pipe material is commonly used for cold water and venting?
  17. Which plastic pipe can carry hot and cold potable water?
  18. Why is PEX popular for home water supply lines?
  19. Why was lead removed from modern water pipes and solder?
  20. What does the word plumbing come from?
  21. Why must plumbing work follow building codes?
  22. What safety step matters before making home plumbing repairs?
  23. Why should a knowledgeable adult supervise soldering copper pipe?
  24. What should you do before solvent welding PVC pipe?
  25. What tool is needed to make a crimp connection on PEX pipe?
  26. What does pipe thread tape help do?
  27. Which of these is a plumber's specialized tool?
  28. What does a pipe cutter do?
  29. Why do plumbers use video cameras in drains?
  30. What is a plumbing fixture?
  31. What does a plug do in a plumbing fitting?
  32. Why is copper tubing often used for water lines?
  33. What does galvanized steel pipe resist well?
  34. Why is a home hot and cold water supply system drawn and explained?
  35. How can you protect home water pipes from freezing?
  36. What is one career that uses plumbing skills?
  37. Why might a plumber use a pipe vise?
  38. What does a flaring pliers tool help do?
  39. What is the purpose of pipe hangers and strapping?
  40. Why did ancient Roman lead pipes rarely poison people?
  41. What is the main difference between a pipe and a tube?
  42. Why does 1/2 inch PEX connect easily to 1/2 inch copper tubing?
  43. Why does 1/2 inch PVC need an adapter to join 1/2 inch tubing?
  44. What does a higher pipe schedule number mean?
  45. Which copper tubing type is thickest and often used underground?
  46. Why does thicker pipe wall slightly reduce flow volume?
  47. How are galvanized steel pipe threads standardized?
  48. Why is galvanized steel rarely used for new home plumbing today?
  49. What is black lacquered steel pipe most widely used for?
  50. Why must special non-conductive fittings join cast iron to other metals?
  51. How are PVC and CPVC pipe connections made? 🔒
  52. Why did demand for copper pipe fall in recent years? 🔒
  53. What seals many plumbing fixtures to their mounting surfaces? 🔒
  54. What is a backflow preventer used for? 🔒
  55. What does a water softener do in a plumbing system? 🔒
  56. What does a UV sterilization light do in a water system? 🔒
  57. What does the EPA set guidelines about for plumbing? 🔒
  58. What can grow in faucets, shower heads, and water heaters? 🔒
  59. What conditions favor bacteria growth in building plumbing? 🔒
  60. Why does a high surface-to-volume ratio help bacteria in pipes? 🔒
  61. What does a pipe bending machine do? 🔒
  62. Why do plumbers use hydro jets and high pressure pumps? 🔒
  63. What is a heavy duty pumper truck used for? 🔒
  64. What does a die do when working with steel pipe? 🔒