WorksheetsChapter 7 Millsap physical science
Total questions: 15
Worksheet time: 8mins
Choose the best vocabulary word that matches the sentence: region around a magnet that exerts a force on other objects
turbine
magnetic field
electromagnet force
generator
Choose the best vocabulary word for this sentence: Region on a magnet where the force is the strongest
turbine
generator
electromagnetic force
magnetic pole
Choose the best vocabulary word that matches the sentence: temporary magnet created where there is a current through a coiled wire
turbine
electromagnetic force
magnetic pole
electromagnetic
Choose the best vocabulary word that matches the sentence: a device that converts mechanical energy into electrical energy
force
magnetic pole
electromagnetic field
generator
which of the following statements describes the interaction between magnetic poles?
like poles attract eachother
like poles repel each other, and opposite poles attract each other
opposite poles repel each other
like poles attract each other, and opposite poles repel each other
which statement describes magnetic field lines at the north pole and the south pole of a bag graph?
field lines begin near the magnets south pole and extend toward its north pole
field lines begin near both the magnets north and south poles meet in the middle
field lines begin near the center of the magnet and extend toward the north and south poles
field lines begin near the magnets north pole and extend toward its south pole
a region that has a large number of atoms whose magnetic fields are lined up parallel to magnets field is...
the magbetosphere
the magnetic declination
the magnetic domain
a ferromagnetic region
if you break a bar magnet in half, each half...
contains one magnetic pole
becomes a bar magnet with two poles
becomes unmagnetized
is only temporarily magnetized
reversing the current direction in a current-carrying wire will...
cause the force deflecting the wire to be parallel to the magnetic field
cause the magnetic poles to form in the opposite direction
cause the force deflecting the wire to be parallel to the velocity of the charge
reversing the current direction will not affect the force deflecting the wire
a coi of wire that is carrying a current and produces a magnetic field is
a galvanometer
a soleniod
a magnetic domain
an electric motor
in an electric motor, periodically changing the direction of the current in the electromagnet can cause the axle to spin because...
the electromagnet loses its magnetism
mechanical energy is converted to electric energy
the moving electrons push the electromagnet in the opposite direction
the magnetic field reverses direction
moving a magnet inside a coil of wire will induce a voltage in the coil. how can the voltage in the coil be increased?
move the magnet inside the coil of wire more slowly
hold the magnet stationary
move the coil of wire slowly, and keep the magnet stationairy
move the magnet inside the coil of the wire more rapidly
the process of generating an electric current by moving an electrical conductor relative to a magnetic field is called...
magnetization
electromagnetic force
electromagnetic induction
alternating current
before electric current in power lines can be safe for your home, it must pass through a...
turbine
step-down transformer
step-up transformer
generator
how are fossil fuels used to generate electrical energy
heat from burning fuel spin magnets inside an electric motor
heat from burning fuel cerates steam that spins a turbine
heat from burning fuel causes an electric motor to produce a current
heat from burning fuel creates steam that turns a transformer
