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

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