ANNALIESE ELFTMAN
What is the filthiest thing
in my house?
!
I am doing my
science project on bacteria
and what places are the
dirtiest in my house. The
reason for this experiment is
that I want to see how
unclean some things really
are.
!
My question is, what
place in my house has the
most micro bacteria and
why?
!
My hypothesis is, out
of the five areas in my house
(shoe, mouth, kitchen
sponge, fridge wall, & the
controlled area) I think that
the sponge will grow the
most bacteria.
!
The materials that I
used are: sharpie, agar, Petri
dishes, a used shoe, a used
sponge, a mouth, a fridge,
and distilled water.
!
My procedure is: first
you take the ager and you
heat it up so that you can put
it into Petri dishes, second
you turn the Petri dishes over
and pure the agar in, third
you put your Petri dishes into
a or shelf, and finally when
the agar has cooled over
night, find out your test
areas.
!
My independent
variable is the different areas
of the house that I am going
to be testing.
!
My dependent is, in
the beginning I thought that
the different areas of my
house would grow different
amounts of micro bacteria.
!
For my controlled
variable it is, the agar is the
same amount in the Petri
dishes, and the same testing
areas.
!
The first one is the
shoe, the second one is the
kitchen sponge, the third is
my mouth, and the fourth is
my fridge wall.
!
In conclusion I think
that