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Year 9
Electricity
Static electricity
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Electrostatic
forces are the forces between
charges
Like charges
repel eachother; AKA
electrostatic repulsion
Opposite
charges
attract eachother; AKA
electrostatic
attraction
Electrons can be moved from one object to another using
friction
For an object to have a negative charge, it would
take
another object's
electrons
For an object to have a positive charge, it would
give
another object
electrons
Materials like
human
skin,
leather
,
wool
,
fur,
silk,
and
aluminium
are more likely to lose electrons
Materials like
wood
,
amber
,
hard
rubber
,
polyester
,
plastics
, and
silicon
are more likely to attract electrons
A
neutral
object can be attracted to a
charged
object
Electrons
move around however
protons
and
neutrons
are tightly secured in the
nucleus
of an atom
Static electricity
is the imbalance of
charges
within or on the surface of a material
The Van De Graaff Generator uses
static
electricity
on a moving belt to
positively
charge a
large
metal
sphere
as it carries the
electrons
away.
An insulator is a substance that
does
not
allow
free
movement
of
electrons
through its
structure