Transcript Chapter 13 Review

Chapter 13
Review
 This is the invisible field around a
magnet
 Magnetic field
 This is the force that pushes or
pulls magnetic material near a
magnet.
 magnetism
 This is when positive or negative
charges no longer balance.
 Static electricity
 The current flows only ONE way in
this type of circuit.
 Series circuit
 This is an electric charge in motion
 Electric current
 A coil wrapped around an iron core
makes one of these
 electromagnet
 The current in this type of circuit
has TWO or MORE paths to follow
 Parallel circuit
 This part of the light bulb provides
the light. Currents do not flow
through it easily.
 resistor
TRUE or FALSE
 Everything in the universe is made of
electrons.
 FALSE
TRUE or FALSE
 Positively charged objects do not attract one
another.
 TRUE
TRUE or FALSE
 Magnets have north and south seeking
poles.
 TRUE
TRUE or FALSE
 A compass always points to Earth’s
geographic North Pole.
 FALSE
TRUE or FALSE
 Earth’s magnetic North Poles are located on
its axis.
 FALSE
TRUE or FALSE
 An electromagnet uses a magnet to create
electricity.
 TRUE
TRUE or FALSE
 Electromagnets can be turned on and off.
 TRUE
TRUE or FALSE
 Electric currents provide the same amount
of energy.
 FALSE
TRUE or FALSE
 Generators make electricity.
 TRUE
TRUE or FALSE
 Lightning happens because of the release of
static electricity.
 TRUE
TRUE or FALSE
 All atoms have a positive charge.
 FALSE
TRUE or FALSE
 All magnetic fields have the same shape.
 FALSE
TRUE or FALSE
 Earth has a magnetic field.
 TRUE
TRUE or FALSE
 Compasses work best when they are close
to a magnet.
 FALSE
TRUE or FALSE
 Moving electric current causes a magnetic
field.
 TRUE
TRUE or FALSE
 Making the core of an electromagnet larger
makes the electromagnet weaker.
 FALSE