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Tuesday, May 17, 2011

marble motion

Guiding Question: Does the mass of a marble affect the way it moves?

Hypothesis: Yes, it does; i think the heavier the marble or item the harder it will be to put in motion.



Materials:

  • Straw
  • Tennis ball
  • Small Marble
  • Big marble
  • Golf ball
  • Large Styrofoam ball
  • Notebook
  • Desk
  • Pencil



Procedure:

  • Get a straw
  • choose a item
  • Choose a partner to run the test
  • Blow
  • Draw a diagram of the directions and length the item rolled
  • Include in the diagram how hard you blew or just write it

Data Analysis :

From my data you can conclude that the mass of a item does affect the way it moves. The way you blow through the straw does affect the direction the item moves. The largeness doesn't matter because a item can be huge but as light as a fly. Such as the Styrofoam ball it was much bigger than the large marble but was light because it was made of Styrofoam.


Conclusion:

At the start of my blog i had a guiding question which is  " Does the mass of a marble affect the way it moves?" My hypothesis was "Yes, it does; i think the heavier the marble or item the harder it will be to put in motion." Do i think my hypothesis is correct? Yes, as a matter of fact i do. Everything turned out the way i thought it would. The heavier the marble was the harder it was to move. Another thing i had noticed was that the harder i blew the more control i had. When i blew hard the ball would go straight depending where i placed the straw but also because i blew hard the breath would last longer but when the air stopped putting the ball in motion the ball would row left.





Wednesday, May 11, 2011

Measurment lab

Guiding question: What is the importance of having an International measuring system? How accurate are old measurement using body parts?

Hypothesis: I think it is important having a international measuring system because not everybody has a ruler of some sort and you always know that you have a measuring type with you at hand or at foot.


Materials:
  • Ruler/ Measuring tape
  • Science book
  • White board
  • Lab table
  • Hallway
  • Peep
  • Crayon Box
  • Obren/my partner
  • Pace: 1 meter - 1 yard
  • Fathom: 6 feet-180
  • English yard: 1 yard- 90 cm
  •  Span: 9"- 20 cm
  • Finger nail: 1/2 inch - 1 cm
  • Palm: 8 cm - 3 inch
  • Egyptian cubit: 40 cm- 18"


Procedure:

1. Make a data table in your notebook with 7 columns and 7 rows.
2.  Choose one of the six objects or distances you will measure.
3.  Determine what form of measurement you will make with the first object. (For example: Length  of  the 6th grade hallway with paces, book with palm or hand, fingernail for crayon box, etc…)
Measure it with the determined form of measurement 3 times, and then find the average.
Measure it with the meter stick/or measuring tape and find the actual measurement.
(IMPORTANT!!!!! BE SURE THAT THE UNITS OF MEASUREMENT STAY THE SAME, either inches
or centimeters or yards or feet or meters and the average needs to be in the same units)
Repeat the same for each of the five objects that are left and measure it with a different type of
measurement, 3 times, find the average and again the actual measurement.
Compare class data results. Find the average of these results.

Record and Analyze :






From my analysis i can see that the measurements that we made with the "Body Part Measurement" are actually very accurate to the actual measurement with a real ruler. On the last 1 you cant really see but the measurement was done with a finger nail and was 9 finger nails long and the actual measurement was in fact 9 inches which is exactly the same to the finger nail( each nail is worth 9 inches)


Conclusion: 
  In conclusion the english forms of measurement are very useful and accurate compared to the measuring tape and ruler. The importance of having a international measuring system is that you can always have a accurate "ruler at hand" or at arm or foot. Not all people have rulers or measuring tapes with them or don't have access but these people might have to measure something so they can have a pretty memorable and accurate measuring system. My hypothesis is very similar to my conclusion now, if you recall it was "I think it is important having a international measuring system because not everybody has a ruler of some sort and you always know that you have a measuring type with you at hand or at foot". To me i think the most accurate type of measurement was the finger nail and the easiest object was the crayon box. The reason why is because in our graphing, a lot of the objects were un even. For example a white board is 6 feet and 1/3 while the crayon box is simply 9 inches. The finger nail measurement was the most accurate, it was the only one that had the exact number to the actual. Also usually finger nails are the same size while on the other hand arms can be all sorts of sizes.


Further Inquiry:

My partner and i made no serious mistakes at all. Our only thing that we could have done better from my perspective was make the graphs a bit neater. This is the only thing i think needs improving.