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Sem B Unit 5
Physical Science 9
| Term | Definition |
|---|---|
| accelerate | change in velocity |
| acceleration | the rate at which an object changes its velocity |
| attraction | the electric or magnetic force that acts between oppositely charged bodies, tending to pull them together |
| current | electric current is the rate at which electric charge flows past a point on the electric circuit |
| dipoles | a pair of equal and opposite electric charges or magnetic poles of opposite sign separated especially by a small distance |
| electric current | the rate at which electric charge flows past a point on the electric circuit |
| electric/magnetic field | a region around a charged particle or object that exerts a force on other charged particles or objects |
| electric/magnetic field lines | lines that show the path a positive test charge would follow in an electric field. The direction of the arrow is the direction of the force. |
| electric/magnetic force | the attractive or repulsive interaction between two charged particles or objects |
| electromagnet | a magnet created by passing an electric current through coils of wire |
| electromagnetic force | a force that acts on charged particles |
| electron | negatively charged subatomic particles found in all atoms |
| energy | the ability to do work |
| force | a push or pull upon an object resulting from the object's interaction with another object |
| friction | the resistance that one surface or object encounters when moving over another |
| frictionless | the absence of resistance between a surface or substance and something that is moving along or through it |
| gravity | a force that attracts objects with mass towards each other |
| kinetic energy | the energy of mass in motion |
| magnet | any material capable of attracting iron and producing a magnetic field outside itself |
| magnetic domain | a region within a magnetic material in which the magnetization is in a uniform direction. This means that the individual magnetic moments of the atoms are aligned with one another and they point in the same direction |
| magnetic field | a region around a magnet within which a force is exerted on other magnetic or electrical particles or objects |
| magnetic force | attraction or repulsion that arises between electrically charged particles because of their motion. ... It is the basic force responsible for such effects as the action of electric motors and the attraction of magnets for iron |
| magnetic pole | region at each end of a magnet where the external magnetic field is strongest. |
| north pole | A bar magnet suspended in Earth's magnetic field orients itself in a north |
| potential energy | the energy stored in an object due to its position relative to some zero position |
| repulsion | the electric or magnetic force that acts between like charged bodies, tending to push them apart |
| south pole | the pole of a magnet that seeks Earth's south magnetic pole |
| strong nuclear force | the force that holds an atomic nucleus together |
| thermal energy | the kinetic energy associated with the random motions of the molecules of a material or object; often used interchangeably with the terms heat and heat energy |
| velocity | the rate of displacement over time |
| weak nuclear force | a force that governs how elements break down naturally |
Created by:
Kaplocher
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