Science Quiz / Science Exam Semester 1 2013-14 Review Part 2

Random Science or Definition Quiz

Terms that will be on the exam

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DefinitionTerm
a field around a charged particle that exerts a force on another charged particle
a 3D region around a magnet where a magnetic force can be produced
the energy associated with motion
a path through which electric charges can flow
used to reverse the flow of current so that the armature can continuously rotate
recognised the phenomenon of chemical energy converting to electrical energy as a reaction between the two different metals of Galvani's instruments
the difference in direction between the magnetic pole and the geographic pole
a separation of charges
chemical source of direct current, source of constant current at a constant voltage, source of potential difference in a circuit, more than one together = 'battery'
the two metals in an electrochemical cell
the difference in electric potential between 2 positions
metals whose domains quickly lose their alignment without external influence
source of zero potential, large enough to absorb the potential of something else and still remain at zero
a device that measures the amount of current, very low resistance, used in series with the rest of the circuit
part of magnet where the magnetic field goes in/out
used to indicate electric current, ammeters and voltmeters are specialized ones of these
coal, oil, natural gas (and petrol & diesel)
a polarized object
the process of generating an electric current from the motion of a conductor through a magnetic field
materials whose domains tend to stay aligned
a material whose domains can be forced to align by a nearby magnetic
states that charges are never created or destroyed; they are only transferred from one location to another
regions of trapped particles, 1k 25k km above Earth's surface in space
DefinitionTerm
materials with low resistance
a mineral containing a lot of iron
naturally occurring magnets
stops/starts the flow of current, 'open' = no current, 'closed' = current flows.
the flow of charges through a material
a simple mechanical device for detecting the presence of an electric charge (or field)
the amount of potential energy per unit of electric charge
any device that consumes voltage, causes a drop in potential (or 'load')
the multi-loop iron core assembly of a motor
atmospheric glowing caused by trapped particles near the poles
a resource that exists in a fixed, limited amount
a device that measures the drop in potential between two points in a circuit, very high resistance, used in parallel with the rest of the circuit
the build-up of electric charge on an object
accidentally discovered the phenomenon of chemical energy converting to electrical energy
a resource that can be replaced at a similar rate to that which it is used at
discovered electromagnetic induction
giving up excess charge to something of a much larger capacity
the region of Earth's magnetic field in space
refers to the properties of magnets and magnetic fields
an electrochemical cell in which the electrolyte is a chemical paste
a current that oscillates, more efficient to produce and transmit over distances but is less 'usable'
a current that is steady, less efficient to produce and transmit over distances but is more 'usable'
a cluster of magnetically aligned atoms
DefinitionTerm
selected points that are part of the data (on the line) but between graphed (measured) data points
the movement of electrons by polarization onto/off of a neutral object due to the electric field of a nearby charged object
for most conductors, the current is proportional to the voltage
used to map the strength, shape, and direction of magnetic fields
an electrochemical cell in which the electrolyte is a liquid
a device that converts stored chemical energy into electrical energy
the flow of electrons through a material
opposition to the flow of charges through a material
called a rheostat, can change the amount of resistance
the loss of static electricity
a fundamental property of matter associated with protons and electrons
a device that uses electric current to continuously rotate an axle. electric to mechanical.
constantly bombards Earth with high-energy charged particles
the energy associated with electric currents
materials with high resistance
a set of two or more electrochemical cells
the part of the electrode that is connected to a circuit
a liquid that conducts electricity because it contains ions
the rate at which energy is converted from one form to another
usually a wire, carries a current, neglible 'R'
converts mechanical energy to electrical energy
selected points that are part of the pattern (on the line) but beyond the graphed (measured) data points

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