bioloiogy big mouth guide sheet

Purpose:  You are to figure out who has the biggest mouth in class.

Question :Who has the larger oral cavity, males or females?

Hypothesis:  (You give)

Test: We will fill the mouths of volunteers with water to get an approximate volume of their oral cavity.  We will do this multiple times and take an average so that we can compare class data.  We will then determine whose mouth is “the biggest”, boys or girls.  We will also measure the height of all participants, in meters.

Materials/table

·       2 cups *Note NO LIQUID, CONTAMINATED WITH SALIVA, MAY GO INTO THE GRADUATED CYLINDERS!

·       100 ml Graduated cylinder

·       Pen or pencil

·       marker

·       Water *Note ALL SPILLS MUST BE CLEANED BEFORE ANYONE

LEAVES TODAY!

·       Waste water disposal-1000 ml plastic beaker

·       Paper towels

·       Pipette (eye dropper)

·       Meter stick and metric ruler

Procudeures with Diagrams: (You give)

Data Table:1^st period

Table #	Size of biggest mouth in your group (in ml)	Height in meters	Gender
Mr. Orth	92	1.805	Male
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Observational Journal:

Analysis:  SHow calculation examples made .  make 2 graphs :  bar graph of test subjects vs. volume in ml, line/scatter graph of test subject height in m (on X axis) vs. Mouth volume in ml ( on Y axis).

Discuss sources and effects of error

Conclusion: ( in paragraph form) Restate hypothesis, was it supported by experiment ?  did you answer your question? Support or refute with data.  Give a next step for taking this experiment further