7.1 Static Charge
1.
Draw a diagram of an atom that has three protons, four neutrons, and three electrons. Label
the narticles and indicate thetr
Which particles in an atom are transferred when an object is charged?
Diagram
oloolronIO
@
What is the overall chmge of this
2. When an acetate strip is charged by
rubbing
does
atom?
I
n4
it acquire a positive charge of
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tl 4o
i/"
ne00lrre 0har44.
3. Use
*
and
-
n
UffAT
lp.
a negative
a
sipns to sketch a diasram of the obiects below.
A Neutral Obiect
ANegative Object
+--l-- Jr
+-+- n
*-
A Positive Object
+-+
2(l
+
-+
+- +0)
4. Contrast electrical insulators and electrical conductors. Draw a diagram of each.
Conductors
Insulators
- - -
+i + * **
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Science 9
o Physicso Assignment
Page
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5.
ofthe
What is the
re and contras
6.
"t""t.o*"o
rons.
[ons
I)ifferences
Similarities
b
hr re a eho.fe
roLun
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?le
a
/ t re
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io i* nnscilrta fnr qn ntriaof *n ho rierrfrjl it if confains millions of elect"rons?' flfl 0 / t f
8. Exptain why
a person can get a shock
walking across carpet and then touching a metal
ect such as a doorknob.
W \qt,#, lhon re/eat(C ut
9. Suppose two iden
to sain a statiil
eh fuu oh,nf
objects were rubbed together. Is it possible for these objects
eqAaYe fia lon{num}a
eleahron-( ehoh, nc, fran!/u /ake-{p
d!.!mc? /
10. When a charged object is touched, the object becomes neutral. nxpUin what has happened
to the charse in this
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( /e ctran
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he
n
c(I"
fr,)
iecl
Co unf.
Science 9
o Physicso Assignment
Page2
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