Thursday, October 21, 2010

Lab Data and Observations/ Error Analysis

6. Error Analysis


In the lab Much Color Ado About Nothing, the wrong amounts of of oil and water were used in the graduated cylinders. Although this would not change the effects of the polarity between the water, food coloring, and oil, the experiment was redone using proper amounts before our data was recorded.

Also, in the Antigravity lab, not enough paper towel was used for the towel to retain a cylindrical shape and it fell down into the water. Before the experiment proceeded, a new cylinder of paper towel was made and the experiment was revised.



5. Data and Observations



Looney Balloony- When the balloon was placed near the stream of water, the steady stream of water was bent towards the balloon. As the balloon moved, the stream of water followed it.



Dish and Clips- When the paper clips were carefully placed in the water they floated along the surface. If not placed at the proper angle and very carefully, the paper clips would sink.



Stir it Up- When the stirring rod was turned at a diagonal, and at a certain angle, the water, would flow along the stirring rod and not drip onto the table. Almost all of the water poured along the rod successfully into the beaker.



Stop on a Dime- The dime held up o thirty nine drops of water with out spilling over. When the number of drops reached forty, they began to run over the edges of the dime, one at a time so that thee dime retained most of the water and a dome shaped bubble stayed on the dime’s face.



Much Color Ado About Nothing- The food coloring mixed with the water and turned it a light pink color. (The food coloring was red.) The coloring did not mix with the oil, however, it remained in drops and sunk to the bottom of the test tube. The oil did not change color.



To Wax Philosophic- The puddle of water tat was dropped on the wax paper stayed entirely together but became oblong as it was pulled along the paper. At one point, the drop split in two but quickly, the drops slid back together to reform the original bubble.



Antigravity- The roll of paper towel remained standing up right in the shallow dish of water while the water soaked upwards into the paper towel against gravity. Once the water had raised a few inches into the paper towel, the bottom was weak and heavy with water. This made the towel fall.

No comments:

Post a Comment