Martinsburg gazette. [volume] (Martinsburg, Va. [W. Va.]) 1833-1855, 1854-04-26

I
thy, or more wealthy, in the whole of broad
England.
SCIENCE ANSWERING sIsrFLE QUESTIONS.
Why is rain water soft because II is not
! imprcgnated with earth and minerals.
Why is it more easy to wash with soft wa
ter than with hard 2 Because soft water
unites freely with soap, aad dissolves it in
stead of decomposing i,~as lard water does.
Why do wood ashes make hsra water soft
| 1st. Because the carbonateA acid Of wood
ashes combines with the sulptate Of lime in
the hard water and converts i into chalk.
! I'd. Wood ashes converts come Of the SOL
uble salts Of water into nsoluble and throws
them down as sediment, BY which the wa
ter remains more pure.
Why has rain water such an unpleasant
smell when it is collected in RAIN water tub
or tanks Because it is impregnased with
decomposed organic matter washed from roofs
or trees, or the cask in which it is collected.
| Why does water melt salt Because very
minute particles of water insinuate themselves
into the small pores OF the salt BY capillary
attraction, and force the crystals apart from
each other.
How does blowing hot food make it cool :
1t causes the air which has been heated by
the food to change more rapidly, and give
place to fresh cold air.
Does fan cool the air No, it makes
the air hotter, by imparting to it the heat Of
our face by transferring its heat to the air.
Why is there always q strong dranght
through the key-hole of door Because
the air in the room we occupy is warmer than
the air in the hall therefore the air in the
hall rushes through the key-hole into the
room and causes draft.
Why is there always a strong draught un-
der the door and through the creyicc on
each sidea Because cold air rushes from
the hall to supply the void "a TIE room caused
by the escape Of warm air M the chimney,
81.
| II You open the hover sash Of aswindow
there is more draught thanIir you open tho
upper sash. Explain the reason ofthis. If
The lower sash be open cold external air will
rush freely into the room and cause draught
inward, but if the upper sash be open the
heated air Of the room win rush out, and Of
course there viii BE- less draught inward
BY what means is room better ventilated
by opening the upper or lower sash A
room Is better ventilated by opening the up
per sash; because the hot viIiated air, which
always ascends towards The ceiling, can es-
cape more easily.
| BY which means is hot room more quick
ly cooled ?-by opening the lower sash. A
hot room is cooled more quickly by opening
the lower sash, because the hot air can enter
more freclyat the lower part Of the room
than at the upper.
/ Why does the wind dry damp linen Be-
cause dry wind like dry sponge imbibes the
particles of vapor from the snrface of the lin.
en- as fast as they are formed.
4 Which is the hottest place in church OF
chapel THE gallery.
Why is the gallery If al public places
hotter than the lower parts Of the building
because the heated air Of the building as
eends 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 grow out Of walls and tow
ers Either because the wind blew the seed
there with the dust or else because SOM,
bird, flying over, dropped seed there, which
it had formerly eaten.