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Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| magnet | any material that attracts iron and materials that contain iron
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| magnetic pole | the ends of a magnetic object where the magnetic force is strongest
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| magnetic force | a force produced when magnetic poles interact
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| magnetic field | the region around a magnet where the magnetic force is exerted
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| magnetic field lines | invisible lines that map out the magnetic field around a magnet
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| atom | the smallest particle of an element that has the properties of that element
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| element | one of about 100 basic materials that make up all matter
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| nucleus | the core at the center of every atom
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| proton | a positively charged particle that is part of an atom's nucleus
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| neutron | the small uncharged particle that is found in the nucleus of an atom
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| electron | a negatively charged particle that is found outside the nucleus of an atom
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| magnetic domain | a region in which the magnetic fields of all atoms are lined up in the same direction
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| ferromagnetic material | a material that is strongly attracted to a magnet, and can be made into a magnet
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| temporary magnet | a magnet made from a material that easily loses its magnetism
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| permanent magnet | a magnet made of material that keeps its magnetism
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| compass | a device with a magnetized needle that can spin freely
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| magnetic declination | the angle between geographic north and the north to which a compass points
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| Van Allen belts | two doughnut-shaped regions 1,000-25,000 kilometers above Earth that contain electrons and protons traveling at high speed
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| solar wind | streams of electrically charged particals flowing at high speeds from the sun
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| magnetosphere | the region of Earth's magnetic field shaped by the solar wind
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| aurora | a glowing region produced by the interaction of charged particles from the sun and atoms in the atmosphere
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Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
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If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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