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19 Cards in this Set
- Front
- Back
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magnet
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an object with magnetic force
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poles
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the part of a magnet where the magnetic force is strongest
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magnetic field
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the area of magnetic force around a magnet
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compass
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an instrument that uses Earth's magnetic field to help people find directions
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What happens when you bring two magnets together?
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They repel or attract each other with a "magnetic force".
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What are the names of the two poles a magnet has?
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a north pole and a south pole
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Which poles attract each other and which poles repel each other?
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North Pole and South Poles attract each other; like poles (north-north and south-south) repel each other.
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When is a magnetic force stronger?
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When the magnets are brought closer together.
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What happens if you hold the south pole of a bar magnet against the south pole of a horseshoe magnet?
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They push apart.
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What happens if you hold the north pole of a bar magnet against the south pole of a bar magnet?
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They pull together.
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Magnetite
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A natural permanent magnet containing iron, which can be found in California's Mojave Desert.
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What are magnets made of?
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-most are made of tiny particles, which are like tiny magnets
-most are made of metal, like iron, nickel, and cobalt |
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Where is a magnetic force stronger?
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Near the magnet's poles.
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Where is the magnetic force weaker?
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Farther away from the magnet's poles.
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What is an axis? (Earth's axis?)
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-An imaginary line through the center of earth.
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Where is Earth's magnetic field the strongest?
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At the north and south poles.
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What is the aurora australis?
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-A display of light near the South Pole.
-Charged particles from the Sun become caught in Earth's magnetic field and give off light. |
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What is a compass needle?
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A thin magnet.
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Which direction does a compass needle point?
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North (because it lines up with Earth's magnetic field).
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