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UNIT2.ELECTRICCHARGE
I.
Pre-reading
A.Checkthemeaningofthewords
below
B.Findandmarkalltheverbs
C.Find2wordsthatyoulike(+)
and2wordsthatyoudislike(-)
andexplainwhy
e.g.Idon’tlike[ash’becauseyouget
ashafteryouburnsomething.Iassociate
[ash’withruin,damageordeath.
as
appear
appliance
attach
below
buildup
coulomb
droplet
dust
earth
electroscope
enough
flowaway
flowchart
gold
ground
induce
induction
ink
leaf
likecharges
measure
melt
inkjetprinter
plate
powerplant
precipitator
prevent
principle
pull
quantity
remove
sphere
through
ALeydenjar.Itisadevicethat"stores"
staticelectricitybetweentwoelectrodes
ontheinsideandoutsideofaglassjar.
Itwastheoriginalformofthecapacitor.
It
was
invented
independently
by
GermanclericEwaldGeorgvonKleist
on11October1745andbyDutch
scientistPietervanMusschenbroekof
Leiden(Leyden)in1745-1746
http://commons.wikimedia.org/wiki/
File:Leyden-jar.png
Retrieved23November,2012
touch
unit
II.Reading
A.Readthetextbelowanddecideifthesentencesaretrueorfalse.
Correctthefalseones
1.Theextraelectronsonthecomputermonitormaketheelectronsin
theparticlesofdustmoveawaybecauselikechargesattract.
