hello and welcome to the dis- Scotia on
the steps of the scientific method
today we're going to talk about the
scientific method in that it involves a
series of steps
they're used to investigate a natural
occurrence
I'd like to start by talking about some
research that was done in late
eighteen hundreds on dogs that had their
Patriots is removed jus a thought on
varying remove the pancreas is from some
dogs
now he did this for a certain reason he
wanted to see what the function of the
pancreas was
they had served by removing the pay
increases
prone to attacks that the
dogwood exit exhibit the same symptoms
as a diet bit diabetic
on therefore
he hypothesized that the Patriots had
something to do with the regulation
sugar in the body now doctor
batting a young surgeon from Canada
heard about the research that
jus a thought marrying did and he
decided to ground up healthy dog
pancreas
and injected into a dot the hat
the symptoms of diabetes and was about
to the
passes passe and he was a big issue
keep the dog alive for a
up to seventy days after the fact by
injecting
he healthy pancreas tissue
into the diet that duck from this we
know that
the pay increases the organ in the human
body that synthesizes
insulin and is with it stops working
correctly it
causes the malady a diabetes
so we take the aforementioned story
and look at hand
through the lens at the scientific
method
we can see that there is a problem or a
question
and some observations research done that
what they were able to formulate a
hypothesis an experiment
was done on on
the poor little puppies and they were
able to collect and analyze results
and there are able to operate the
conclusion
so we need to look into this a bit
further the scientific method
really starts with a problem or a
question
now the problem or question can develop
from and observations are some research
that you were doing
so sometimes those two things work in
tandem with each other
what's not survey shizz may
and a question generated you can move on
to the hypothesis
in formulating a hypothesis here tranny
with I thought this is you're trying to
predict the possible answer to the
problem or question
dates you up sir
let's look at let's go to the discovery
of penicillin is kinda model
for I how hypothesis works doctor
climbing on re
upon returning back from his summer
vacation he came back to hurriedly messy
lavish
and there was petri dishes everywhere
and
what are the petri dishes had some
staphylococcus in it
it was a inoculated with the
staphylococcus bacteria
and the bacteria was growing but in the
same
petri dish there is also some old some
penicillin
um mold that was growing
and the penicillin was actually in the
hippity
the staphylococcus
drown growing further and encroaching
upon the Mol Cell
doctor Fleming hypothesized that
the mole inhibited
the growth I'll the bacteria so
doctor swimming was to develop the
experimenter
to look at what his observations
this hypothesis was he would Greenock in
late
a a petri dish with
staphylococcus and need to introduce
small just like the 42
any you set up some general procedure
for
that for that
discovery or at the Tess about his I
offices so anytime an experiment as ran
were done to you either prove or
disprove your hypothesis
you're gonna collect and analyze results
you may have to modify the procedure
jury and after you collect and analyze
results
on you might also want to confirm the
results very testy
and they once you have the results you
look at the data you gender
n you analyze the data you come up with
that conclusion
that includes a statement that he either
accepts or rejects the
original hypothesis he reckoned make
some recommendations for further study
and possible improvements to the
experiments
now within the scientific method you
often hear
theory and lot and its kinda confusing
what he reverses line is
so what is the theory a theory is a
unifying principle that explains a body
with experimental observations and the
laws that are based on them
theories can also be used to read it
related phenomena
if the theory is proven to ensure it is
disregarded term on applied so let
when I was thinking about series I
thought about your theory
now there's different types a germ
series viruses there's bacteria
I am so we need to be aware that
there is a tremendous amount of body of
knowledge in experimental
evidence that goes into juror
seer and is continually
being modified and some things that may
head
been proven true that for might be
proven untrue
and dis guarded and the overall
germ theory is modified to
the within the boundaries
I'll acceptable data so this brings up
about
what is a law liza have a rich has found
it
they make that may summarize it as a law
laws a concise verbal or mathematical
statement that shows a relationship
between phenomena so I think that
Newton's second law which is
force equals mass times acceleration
so what that essentially means is
everyone kinda unconsciously knows
the Second Life everyone knows the
heavier objects require
more force in New the same distance as
later of the Excel it's a phenomenon
that's absurd
so I hope this helps you understand the
scientific method a little bit better
and that you can apply it to the
assignment that will be given
with that blackboard
