Tuesday, 1 October 2013

Melissa Machado. Scribe Post. October 1, 2013



First, Mr.Pro was explaining about our essays. He told us what some codes mean that he used to correct the essay. Like ITC, UT, WFS, and AD.

Comment Acronyms

AD = Add more detail.  This is too general.
Add statistics (numbers) or specific information about your topic.
Sometimes things were too general.  For example, “there are good and bad points about everything in this world”.
I would read it, try to avoid to vomiting and then I’d strike through it.
For example, “there are good and bad points about everything in this world”.

ITC = In-text citation is needed for this sentence.
Wherever you have a specific fact such as a number, use in-text citation.

UT = Use a transition.

WFS = Write in full sentences.
Sometimes your sentences were missing verbs.
For example, “Plangement.”  
A sentence must have:
  • A subject
  • A verb,
  • End punctuation (.!?),
  • Capital letter at the beginning.


 He also showed Gaetano's essay. In Gaetano's essay he explained some good points and bad points of things that he did. One of the good points was that he followed the directions. He wrote in each paragraph what was asked.  One bad point was that he did not use transitions. That makes the reader get confused, it goes to one idea to another randomly.


Paragraph 1:
Introduction
Technology & Man-made disaster in a place

Paragraph 2:
Explain the energy changes involved in the technology and its purpose for society (why it was created).
Paragraph 3:
Explain the energy change involved in the disaster and how it caused damage to the environment and to people.
Paragraph 4:
Explain what was done after the disaster.  
Paragraph 5:
Conclusion
Summarize the main ideas.  
Propose how similar disasters may be avoided in the future.

After, We did experiments. There was the potato, batteries, rocket, balls, hot plate, and elastic experiments.





This is the instruction of every experiment:

A) Investigation of Stretch of Elastic /cm
vs distance the elastic travel /cm
Method
  1. Tape the ruler to the desk so it’s perpendicular to the side of the desk.
  2. Position the front of the elastic to the side of the ruler.
  3. Pull the elastic so it is long as possible, but it is not stretched.  Record this value.
  4. Stretch the elastic 2cm.
  5. Let go of the elastic.
  6. Measure the distance from the base of the desk below the ruler to the final landing position of the front of the elastic.  Record the distance.
  7. Repeat steps 4 - 6 for stretches 4, 6, 8, 10 and 12 cm.
B) hot plate - time /min
vs temperature change /C
Method
  1. Set both dials on the hot plate to level 8.  
  2. Put 250 mL of water into the empty pan.
  3. Put the thermometer into the water and wait until the temperature doesn’t change.  Record the temperature.
  4. Put the pan on the hot plate.
  5. Record the temperature every 1 minute.
C) mass of chip /g
vs temperature change of water  /C
  1. Break the potato chip into small, medium and large sized pieces.  Turn the scale on and push tare.  Use the scale to find the mass of the potato chip pieces.  Get a range from (0.1 to 0.7g).  Record the masses.
  2. Measure 5 mL of water using the measuring cylinder, and pour it into the test tube.
  3. Put the thermometer into the test tube.
  4. Wait until the temperature reading on the thermometer doesn’t change.  Record the temperature.
  5. Light a match.
  6. Light the alcohol burner using the match.
  7. Use the tongs to grab the smallest piece of chip.
  8. Hold the chip over the flame until it’s on fire.  Then, your partner can blow out the flame on the alcohol burner.
  9. Use the test tube holder to hold the test tube with the water and thermometer in it over the flaming puff until the flame goes out.
  10. Record the maximum temperature on the thermometer.
D) Volume of water /mL
vs water rocket height /cm
  1. Position the rocket vertically close to the ground.
  2. Position two meter sticks stacked vertically above each other.
  3. Pump the rocket 8 times.  For the first trial, there is no water in the rocket.
  4. Pull the trigger on the rocket and launch it vertically.
  5. Observe and estimate how high the rocket travelled in tens  of cms.
  6. Repeat steps 1-5 except before step one, measure 5mL of water using the measuring cyclinder.  Add the water to the rocket using the funnel.  
  7. Repeat steps 1-6 for 10, 15, 20, 25, and 30 mL
E) Investigation of Relative Pressure /s
vs Height Bounced Back /cm
Method
  1. Pump up the ball with the pump until it’s really bouncy.
  2. Drop the ball from 1.0 m
  3. Measure the height of the bounce back.
  4. Release air from the ball using the needle for 3 seconds.
  5. Repeat steps 1-4.
F) Investigation of number of batteries /#
vs voltage /V
  1. Put the batteries in series (one after the other alternating positive and negative).
  2. Hook up the voltmeter in the circuit and measure the voltage.
  3. Start with one battery and make circuits up to 6 batteries.


Mr.Pro Also showed us this method of observations. People had to do that method in their notebook while doing the experiments.

Data and Science: The Scientific Method
  • Observe
body heats up when you exercise
  • Question
    • Identify an independent variable - something that we can change and measure
play basketball for a certain amount of time
  • Identify a dependent variable - something that will change and we can measure
measure your body temperature
  • Predict: How are the independent variable and dependent variable related?
The longer I play basketball, the more my body temperature will increase.
  • Investigate
    • Set values for how we will change the independent variable and how we will measure it.
      • play basketball for a 5, 10, 15, 20, and 25 minutes, use a countdown timer
      • Ex) Change the number of pumps of a rocket
    • Determine how we can measure the dependent variable
      • measure body temperature under my armpit right after playing basketball
      • Ex) height the rocket goes


At the end of class, we shared our results for experiments. Different people shared their results for each experiment.


Block 2
A) Stretch Elastic /cm
Distance /cm

B)Time /min
Temperature /C
Stefano
10
12
14
16
18
20
22



195
250
310
416
480
535
463


0
1
2
3
4
5

25
37
47
56
65
77





C) Chips Mass /g
Temperature Change /C

D) Volume of water /mL
Height /cm
0.1
28



0
1
2
0
0
0





E) Time /s
Height bounced back /cm

# batteries
Voltage /V
0
3
6
9
12
15
60
55
50
40
35
40

1
2
3
4


1 comment:

  1. What were some of the measuring skills used in the experiment?

    ReplyDelete

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