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18 terms

force and motion

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conduction
the transfer of thermal energy caoused by particles of matter bumping into each other
friction
a force that keeps objects that are touching each other from sliding past each other easily
conductor
a material that electric current can pass through easily
insulator
a material that curent cannot pass through easily
electric current
a flow of electric charges
circuit
a path that is made for an electric charge
resistor
a material that resists that flow of current but does not stop it
electric cell
a device that supplies energy to move charges through a cell
series circuit
a circuit that has only one path for current
paralled circuit
a circuit that has more than one path along which current can travel
magnet
an object that attracts certain materials, such as iron or steel
magnetic pole
the end of a magnet
magnetic field
the space all around a magnet where the force of the magnet can act
electromagnet
an arrangement of wire wrapped around a core, producing a temporary magnet
carbohydrates
nutrients that should be your main source of energy each day
proteins
nutrients that give you energy and help build and repair cells
fats
the nutrients that give you the greatest number of calories for the amount of food eaten
balanced diet
food choices that give you the amounts of different nutrients you body needs.