Wisconsin tribune. (Mineral Point, Wis.) 1847-1854, 1852-11-11
Science Answering Questions.


Why is rain water soft? Because il is not
impregnated with earth and other mineral
Why Is it more easy to wash with soft wa
ter than with hard Because soft water unites
freely with soap, and dissolves it, instead Of
decomposing it as hard water does.
Why do wood ashes make hard water soft
Ist. Because the carboHic acid of wood ashes
combines with the sulphate Of lime in the hard
water, and converts it into chalk; and 2dly,
wood ashes convert some Of the soluble salts
of water into insoluble, and throw them down
sediment; by which the water remains
more pure.
Why has rain water such an unpleasant
SMELL when it is collected in a rain water tub
or tank ! Because il is impregnated with de-
composed organic matter, washed from roofs,
trees, or the dasks IN which 1t is collected.
Why does water smell salt Because very
minute PARTICLES Of water insinudte themselves
into the pores of the salt by capillary atlrac-
ton, and force the crystals apart from each
other.
How does blowing hot food make them
cold II causes the air which has been heated
by the food to change more rapidly, and give
place to fresh cold air.
WHY do ladies' fan themselves in hot weath-
er That fresh particles Of air may be brought
in contact with their faces hy the action of the
fan; and as every fresh particle Of air absorbs
some heat from the skin, this constant change
makes them cool
Does fan cool the air No; it makes the
air hotter, by impartjng to 1t the heat of our
face; but it cools our faces by transferring its
heat to the air.
Why is there always a strong draught
through the keyhole Of door Because the
air in the room we occupy is warmer than the
air in the hall therefore, the air from the hall
~ 4
causes draught.
Why IS there always a strong draaght un-
der the door, and through the crevices on each
sidel Because the cold air rushes from the
hall to supply the void in the room caused by
the escape of warm air on the chimney, &c
Ifyou open the lower sash Of a window,
there is more draught shac If you open the up
per sash. Explain the reason Of this. If the
lower sash be open, cold external air will
rush into the room, and cause a great draughI
inwards bat If the upper sash be opened, the
heated air of the room viii rush out; and, Of
course, there will be less draught inwards.
By which means Is a room better ventilla-
ted-by opening the upper or lower sash
A room Is better ventilated by opening the up
per sash; because the hot ventilated air.
which always ascends forwards the ceiling.
can escape more easily.
By which means is hot room more quick
ly cooled-by opening the upper or lower
sash A hot room is cooled more quickly By
opening the lower sash; because the cold air
enters more freely at the lower part Of the room
than at the upper.
Way does the wind dry damp linenl Be
cause dry wind, like a sponge, lmbibes the
particles of yapor from the surface OF the lin
en-, 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 hot
ter than the lower parts Of the building Be-
cause the heated air Of the building ascends
and all the cold air which can enter through
the doors and windows; keeps 10 the floor al
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 seed there,
which it mad formerly eat.