🧭 SurvivalGrade 4Lesson 18
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Make and Use a Compass

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What you will learn

  • 1Magnetize a needle to build a working compass
  • 2Float or hang the needle so it can spin freely and settle north-south
  • 3Check the compass against the sunrise to find which end points north
  • 4Cross-check a homemade compass with the sun and landmarks
📘

Mini Lesson

A compass is one of the oldest survival tools, and the amazing part is you can build one from almost nothing. The secret is a magnetized needle. Once a needle is magnetized and can turn freely, it always swings to line up NORTH-SOUTH, the same way every time. Point that needle at the world around you and suddenly you can hold a straight path instead of walking in circles. All you need is a needle, a way to charge it, and still water or a thread to let it spin.

🌿 The Wild Way (with only what nature gives you)

  • MAGNETIZE the needle: stroke it the SAME direction about 50 times on a magnet. No magnet? Ask a grown-up for one - even a small fridge magnet works.
  • LET IT SPIN FREELY: rest the needle on a small leaf or a piece of cork floating in still water, or hang it from a thread, so nothing stops it from turning.
  • LET IT SETTLE: leave it alone and it slowly swings until it lines up NORTH-SOUTH and stops there.
  • FIND WHICH END IS NORTH: check it against something you already know - the sun rose in the east - so you can tell which end of the needle is truly north.
  • HOLD YOUR HEADING: pick a far-off landmark in the direction you want to go and walk to it, checking the compass to keep a straight line.
⚠️

Keep the needle away from metal, phones, and magnets while you read it, or it will point at THOSE instead of at north. Needles are sharp, so let a grown-up help. And remember: a homemade compass is only a rough guide, so always cross-check it with the sun and with landmarks before you trust it.

Words to know

compass

A tool with a magnetized needle that always points to show you which way is north.

magnetize

To give a needle a magnetic charge by stroking it the same way on a magnet.

needle

The thin metal pointer that, once magnetized and free to spin, lines up north-south.

float

To rest the needle on a leaf or cork on still water so it can turn freely.

north-south

The line a free magnetized needle always settles along, one end north, one end south.

landmark

A far-off thing you can see, like a hill or tree, that you walk toward to hold a straight path.

A magnetized needle floats on a leaf and points north-southA floating needle finds north1 · magnetizemagnet→stroke ~50x, same way→2 · float & settlewaterNS
💡

🧠 Survivor’s Trick: even a small fridge magnet works. Stroke the needle the same way on it, then float it on a leaf in a puddle. Even a weakly magnetized needle will still slowly swing around and find north.

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← Lesson 17: Navigate by Sun and LandmarksLesson 19: Signal for Rescue →