The Jeffersonian Democrat. [volume] (Chardon, Ohio) 1854-1865, 1859-03-04
Science Answering Simple Questions.

not impregnated with earth and minerals.
Why is it more easy to wash with soft
water than hard ? Because soft water
unites freely with soap, and dissolves il
instead Of decomposing it, as hard water
does
Why do wood ashes make hard water
soft lst. Because the carbonic acid Of
wood ashes combines with the sulphate OF
lime in the hard water, and converts II
into chalk 3D. Wood ashes convert some
of the soluble salts OF water into insUluble,
and throw them down rs sediment, by
which the water remains more pure.
Why has rain water such an unplcas.
ant smell when it is collected in a rain
tub or tank q? Because it is impregnated
with decomposcd organic matters washed
from the roofs, trees, or the casks in which
it is collected.
Why does water melt salt ? Because
very minute particles Of water insinuate
themselves into the pores of the salt by
capillary attraction, and force the crystals
apart from each o!her.
How does blowing hot food make it
cool ? It causes the air which has been
heated by food to change more rapidly,
and give place to fresh cold air
Why do ladies fan themselves in hot
weather? That fresh particles Of air may
be brought in contact with their faces bv
the action OF the Ian and as every fresh
particle Of air absorbs some heat from
the skin, this constant change makes them
cool.
Does a fan cool the air =? No, it makes
the air hotter, by imparing to it the heat
Of our face ; but it cools our face by trans.
ferri1g its heat to the air.
why is there always a strong draught
through the key hole OF a. door ? BE.
cause the air in the room we occupy is
warmer than the air in the hall there
fore the air from the hall rushes through
the kcy-hole into the room, and causes
draught.
Why is there always n strong draught
under the door and through the crevice
on each side ? Because the cold air rushes
from the hall to supply The void in the
room caused by the escape Of warm air
up the chimney, &c.
Why is there always q draught through
the window crevices? Because the exter-
nal air, being colder than the air of the
room We occupy, rushes through the win
dow crevices to supply the deficiency
caused by the escape OF warm air up the
chimney, &c.
Ii you open tho lower sash Of window
there is more draught than il you open the
upper sash. Explain the reason of this
If the lower sash be open, cold external
air will rush freely into the room and cause
a draught inward but if the upper sash
be open the heated mir of the room will
rash out, and Of course there will be less
draught inward.
By which means is room best venti-
ated-by opening the upper or lower
sash A room is better ventilated by
opening the upper sash f; because the
hot, yitated air, which always ascends
towards the ceiling, can escape more
easily.
BY what means is a hot room more
quickly cooled-by opening the upper or
lower sash A hot room is cooled more
quickly by the lower sash, because the
cold air can enter more freely at the lower
part oft the room than at the upper.
Why does the wind dry damp linen .
Because the wind, like a dry sponge, i'm.
bibes the particles of vapor from the sur.
face of the linen as fast as they are
formed.
Which is the hottest place in church
or chapel? The gallery.
Why is the gallery OF all public places
hotter than the lower parts of the build.
Jag? Because the air of the building
ascends, and all the cold air which can
enter through the doors and windows
keeps to the floor till it-has become heated.
Why do plants often grow out of walls
and towers? Either because the wind
blew the seed there with the dust: or else
because some bird, flying over, dropped
the seed there, which 1t had formerly
eaten.
Wuy nnN'r VnU I.EIuN un,np TIKI,