Friday, September 27, 2013

Earth science sept. 30 - Oct. 4th

We will be doing Orienterring outside so dress to go outside every day!!

Get notebooks approved before Wed. 10/02/13

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

  1. for the Rd just do your best to describe how to use each material in a logical order  
  2. for a diagram show how the P-1000 window will read for each different volume extraction and how you will use the balance.
  3. you will conduct at least of 3 trials of data collection for each member of your group
  4. 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

  1. 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

 
  1. What is the accuracy for the average of all trials by your group?
  2. 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 quiz for ch 2 on 9/26 + 9/27

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.

Biology for 9/25 + 26

Read and take Cornell notes for ch 6.1 + 6.2 pgs. 148 - 160.

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:

 

 
Analysis: include calculation examples and Graph of Height (X) vs. Ave. volume (Y)

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)