Democratic standard. [volume] (Georgetown, Brown County, Ohio) 1837-1850, 1841-06-08
IS [Fom the Fam y Library Magsz'a.l
SCIENCE FOR CHILDREN.
Lesson

Wha. then would you suppose natural
Philosophy TO meant
AkaOrledge Of Nature! il teaches US
the laws by which nature is governed,
and assigns cause for most Of the oper-
atoms Of nature.
You know that if you hold an apple in
your hand, let il 60, il will fall 10 The
ground, but do you know the cause Of Us
falling! No. VIII Natural Philosophy
explain the causeg 1t will. lfyou will
give your attention 10 the study, you will
find il very interesting; and, first, will
explainiO you certain properties which
all bodies possess. When lspeak ofbO-
dies, what do | mean?
All substances, Of whatever nature,
whether solid or fluid. Is air bodyi
Itis--so is water, as we'll as chair
or table.
Then all bodies are not alike in all re.
specis, but there are, as ] said before,
few properties, which are found in all bod.
les, and are therefore called essential or
general properties. The first OF these,
that ! shall mention, is impeRetrGbihy.
What is meant by impeRetrGbiMy2
1t is that property which all bodies
have, Of occupying certain sia;e, 81
that no two bodies can occupy the same
spaceat the same time
II lput spoon into glass Of wafer
what takes place? The waleI will run
over 10 leave place for the spoon.-
Why is fhisl
Because the spoon and the water are
both impenelrable, and therefore cannot
occupy The same space. lf you dive a
nail INTO apece ef wood, do not the nail
and the wood occupy The same spacra
No, for the nail has pushed aside lhe
particles of wood 10 make way tor itself.
aud if you draw out the nail you will see
that the wood is not there.
What, then, is the first general proper
ty Of bodies?
Impcnetrabilhy.
What do we mean by saying that all
bodies have erteasioH3 We mean lha
they all have length, breadth aud depth.
Can you think Of any body wllhour
length, width. and lhickness2 No, lhts'
belong 10 all bodies, aud constitute wha
we call extension.
What does figure mennH 1t mean
fora or shupe. What body do YOU think
of that has not some shaptg
Nune--some have very curious forms
but they all have figure.
Another general property Of bodies is
dipisibilby. Can you make grain ol
sand any smaller than It Is2
Yes, could cut u into a great man!
parts, but they would be very small.
Could you divide il n'o parts 50 small
that they could not be agntn diyided4
No, that would be impossible; for II
there were suitable instruments. itc'lbi
be divided again AMI again, and still each
pert could be divided
Is this property common to oil bodes'
Ii is.
Why docs a piece Of sugar sweeten
the whole cup Of teal Because II pos
sesses this property OF beng divided ina
very small PARTICLES, and SO spreads IT,
selfihrough the tea. Can any particle
Of matter be destIoyed2 No
What becomes Of the wood that is
burnt oil tho fire; does il not disappear
Il is only changed into ashes and smOk.
but not a particle Of il is destroyed. n
What do w0 mean by Iaertidl IL.
TIE tendency that all bodies Ilays 4
remain In a state Of rest or Of motion.
Does body ever stop moving 0kilaelll
No, and It, never moves wiIhqAI some
force applied to i.
Is there no other property which q
bodies possess! Yes there is6uemor'
which is called attraction. What do w
mean by attracli0h2
That every particle has The power o
drawing to il every other paFlicle.
II bodies were deprived of this proper
II, what would be the consequence!
All bodies would crumble 10 pieces
for there would be nothing to hold then
together
Is there more Than one kind Of atrac
-tiOn.
Yes, there are two knds--aftractioI
Of cohesion and attraction Of grGphgtsQa
How do they differ!
Attraction Of cohesion afieis siisl
parlcIes al very small dislandes ifou
each other--aitractio of graviauop q
fecis large bodies at great distshcss. N
What sauses all bodies TO lallto The
SShhl
Attraction az fgravitaiion,
What is il which keep be OF
house tOgetheri
II is the attraction oi!c rslnH pl
between the bricks and n snoTl
The attraction ofgravitali keeps houa
npOn the ground.
Does The Earth attraet asIlsg bodies
ltdOes,
Do all bodies attract i
Yes, but they are SO q tmallel