We will be doing Orienterring outside so dress to go outside every day!!
Get notebooks approved before Wed. 10/02/13
Friday, September 27, 2013
Thursday, September 26, 2013
Biology Density of Water lab
Measurement Lab
Title: Hint, be descriptive and to the point
Question: How can
OHS measuring devices be used by students to accurately measure the density of
water?
Hypothesis: Hint,
your answer must include the independent and dependent variables you will test
to support or refute your question.
Test: Hint: Density
= Mass/Volume.
Materials:
(1) P-200 micropipette, (3) Reaction tubes, box
of blue tips, (1) 1000mL plastic waste beaker, (1) metric balance, supply of dH20
in (1) small glass beaker, paper towels, safety equipment-eyewear and aprons…….
Procedures: Hints, Make
sure your final procedures include labeled diagrams
- for the Rd just do your best to describe
how to use each material in a logical order
- for a diagram show how the P-1000 window
will read for each different volume extraction and how you will use the
balance.
- you will conduct at least of 3 trials of
data collection for each member
of your group
- you will need to empty rxn tubes of any
trace of water and re use-them,
Data Table:
(example: Remember that you need room for at least 9
trials!!)
Measurer
|
Mass of empty tube
|
Mass of tube and H2O
|
Mass of H2O
|
Volume of H2O
|
Calculated H2O
density
|
|
|
|
|
|
|
DON’T forget to
record observations of data collection
Analysis:
This section should include
a graph of the data (mass on the y-axis & volume on the x-axis), the
formula for density, show at least one example of the math you did when
calculating density and answer the following questions. Hint you will want to convert measured μL – mL to answer the questions
- Check your accuracy for the measurement
lab; calculate percent error for the average of your three trials?
Percent
error = (measured average density – 1g/ml) . 100%
1g/ml
- What is the accuracy for the average of
all trials by your group?
- Which measuring device is most
accurate? Explain your answer
Conclusion:
Don’t forget to
explain what happened? Restate your
question and hypothesis and why you thought it was the best guess. What do you know about the answer to the
question? How does the data support your
answers? i.e.use numeric comparisons to
support your answers! How did human
error influence your data? How could you
further/redo this experiment for more accurate results? What is the social context for this lab? (This should be at least 3 paragraphs)
extra credit: write “praise nick”
Tuesday, September 24, 2013
Earth science for 9/24 + 25
Finish the geolab on pgs. 42 - 43. Write all answers to the analyse and conclude and apply sections into your notebooks using complete sentences. Convert all answers to metric , using 1 km + .62 miles or 1 ft. + .3048 meters as applicable.
Friday, September 13, 2013
Earth Science 9/ 12 -13
Read and take Cornell notes for Ch 2.1, pgs. 26 - 31, on Mapping using latitude and longitude.
Bology- micropipet worksheet 9/12 -13
dimensional analis and questions about proper use and reading of the micro pipets.
Biology Big mouth data 1st period
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 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
·
Waste water
disposal-1000 ml plastic beaker
·
Paper towels
·
Pipette (eye
dropper)
·
Meter stick and
metric ruler
·
Amphil
disinfectant
Procudeures with Diagrams:
(You give)
Data Table:1st period
Test
Subject
|
Ave. volume of oral cavity (in ml)
|
Height in meters
|
Gender
|
Mr. Orth
|
83
|
1.81
|
M
|
Aisha A
|
54
|
1.58
|
F
|
Ryan E
|
74
|
1.745
|
M
|
Joseph D
|
90
|
1.86
|
M
|
Grace M
|
70
|
1.56
|
F
|
Evan g
|
70
|
1.74
|
M
|
Aaron A
|
51
|
1.67
|
M
|
Leah F
|
51
|
1.665
|
F
|
Ryan S
|
62
|
1.72
|
M
|
Nandi
|
48
|
1.74
|
F
|
Caro
|
54
|
1.57
|
F
|
|
|
|
F
|
|
|
|
|
|
|
|
|
Observational Journal:
Wednesday, September 11, 2013
Biology Big Mouth Lab 6th period
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:1st
period
Table
#
|
Size of biggest mouth in your group (in ml)
|
Height in meters
|
Gender
|
Mr. Orth
|
92
|
1.805
|
Male
|
Jhoanna
|
72.3
|
1.525
|
F
|
Rianna
|
57
|
1.485
|
F
|
Josh S
|
100
|
1.725
|
M
|
Chapman
|
50
|
1.75
|
M
|
Martha
|
59.67
|
1.48
|
F
|
Michael
|
103
|
1.74
|
M
|
Alyssa
|
67.6
|
1.59
|
F
|
Danielle
|
67.33
|
1.61
|
F
|
Kyla
|
69.33
|
152
|
F
|
Bart
|
138
|
1.82
|
M
|
Miguel
|
43
|
1.75
|
M
|
12
|
|
|
|
13
|
|
|
|
14
|
|
|
|
Observational Journal:
Conclusion: as per lab format sheet
Tuesday, September 10, 2013
Earth science- Hard Deadline FOP Maps due
FOP Maps due with rubric by 12:45 pm on Friday Sept. 13th !!!!!!
Biology 9/9 -10 math ppt questions
complete math review problems 1 - 8 from ppt.
1.256 μL
→ ?mL
2.2007 hm
→ ?dm
3..00096 g → ?mg
Answer using scientific notation
4.15,002,000 =
5.98,005,000,000,000,000 =
6..00000000920 =
7.How many hours will you spend in
this class during the school year? (1 school year = 181 days)
8.A leaf sample on the balance reads
1.05 g how much does it weigh?
Fw = m
• ag
Ha! A balance measures mass not weight! If you insist on using the term weight use
the above formula; where Fw = weight (in Newtons), m =
mass in kg and ag = 9.8m/s/s (acceleration of gravity on
Earth)
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