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

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