Magnetic Fields
SCIENCE
The magnetic effect of a magnet spreads out from the poles and is called the Magnetic Field. You can investigate the field around a magnet using iron filings to show the pattern or using a plotting compass to follow the direction (start from one corner of the magnet and slowly move the plotting compass in the direction the needle points to bring you round to the other pole).
See how the arrows come OUT of the North and go INTO the South pole.
To attract a compasses North pole, the field at the Arctic must be a South.
The churning iron in Earth’s core creates its own magnetic field, as if there were a huge bar-magnet inside Earth. This is how compasses work for navigation. The needle of a compass is a tiny bar-magnet which lines up with Earth’s magnetic field lines so its own tiny North pole always points to magnetic North, roughly the same direction as the actual North pole of the planet.
YEAR 8 KNOWLEDGE ORGANISER AUTUMN
I Delta Academies Trust
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