Pitches in Different Liquids
By: Caroline
oWhich liquids have the
highest and lowest pitches?
oWill thickness and thinness have
an affect on the pitch?
o I think water will have the highest pitch
and soap will have the lowest pitch
because if thickness and thinness
matters then water will be thinner and
soap will be thicker.
o The second highest will be Sprite
because it is really thin too. Third, oil
because I think it is really thin too.
Fourth, shampoo, because sometimes it
is thinner than soap.
o
o
o
o
o
o
1
1
1
1
1
1
cup
cup
cup
cup
cup
cup
of
of
of
of
of
of
sprite
water
milk
soap
shampoo
cooking oil
o Measuring cup
o Wooden spoon
o 6 cups
Tools
1) Lay out glasses.
2) Put in one cup of each liquid into
different cups.
3) Tap each cup with a wooden spoon.
4) Observe and record data.
o Shampoo is the lowest pitch and oil is the
highest. Milk is lower than soap. Soap is
the third lowest. Sprite and water are tied
for second highest. Shampoo made a
thud when I hit the cup with the wooden
spoon.
o At first it was hard to hear the differences.
Then I spread apart the glasses. That
made it easier to hear the differences.
o I learned that the thicker the liquid the
lower the pitch and the thinner the liquid
the higher the pitch. That’s why shampoo is
the lowest and oil is the highest.
o My hypothesis was incorrect because I said
water is the highest and soap is the lowest,
which was incorrect.
o I was surprised that it was really hard to
hear the liquids because in class it was
really easy to hear them.
o One thing I will do differently next time is use
glasses instead of glass cups because I think it
would work better like the ones in class.
o My question for further study is , Will it work
better if I hit the glasses with a medal spoon?