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Hey there! Ready to explore how magnets work? Let's investigate the invisible forces that push and pull around us!
Magnets can push or pull objects without even touching them. This is because every magnet has an invisible area of force around it called a magnetic field.
Every magnet has two ends called poles: a north pole and a south pole. Magnetic force flows out from the north pole and loops back into the south pole.
When we plan an investigation, we can map this field. By sprinkling tiny iron filings around a magnet, we can see them line up along the invisible magnetic curves.
Imagine you are designing an experiment to find out if a magnetic field can pass through different solid materials like paper, plastic, and wood. How would you plan and conduct this investigation?
- First, state your goal: We want to see if magnetic force can act at a distance through a solid barrier.
- Second, gather your tools: You will need a strong bar magnet, some steel paperclips, and your test barriers (a sheet of paper, a plastic ruler, and a wooden board).
- Third, set up the test: Place a paperclip on top of the paper sheet, and hold the magnet directly underneath the paper.
- Fourth, conduct the test: Gently move the magnet side to side. Observe if the paperclip moves along with the magnet.
- Fifth, repeat the steps: Use the plastic ruler and the wooden board in place of the paper.
- Sixth, analyze your results: If the paperclip moves, the magnetic field successfully passed through that material!
