1. Experiment, relationships, & Explanations:
1.1. Phenomenon under study
• Newton’s Third Law of Motion
• Pressure
1.2. Hypothesis or hypotheses
• Allia: My hypothesis is that after I let go of the carton and remove my hand that is covering the bottom holes that one, the water will begin to flow out of the holes. But second, because of the precise and specific placements of the holes, the water coming out of each hole will cause the carton to being spinning in a counter clockwise motion as the water is being released from the holes.
• Ruben: The milk carton will basically turn into a homemade sprinkler with water going great lengths in all directions.
• Theodore: The milk carton will spin, because of the strategic locations of the holes
• Alejandro:
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½ gallon size milk carton, scissors, string, and water. One of the requirements was that the milk carton had to be empty. Most of us first cleaned out the remnants of milk from the carton by washing it before completing the experiment. Also the instructions specify that the milk carton needs to be a paper milk carton. One of our members substituted the use of scissors to make the necessary holes by instead using a nail. Also another member used a shoelace for their string. Both of these substitutions led them to execute the same procedure in their experiment as the rest of the group …show more content…
But for many of us, the holes made with scissors were not as wide as desired. For most of us, after we completed the experiment a few times until the holes were made wide and even enough to allow water to flow equally out of them
2. Collecting & analyzing experimental data:
2.1. Sources of experimental uncertainty
2.2. Impact of experimental uncertainty on data
2.3. Minimizing experimental uncertainty
2.4. Recoding and representing data
2.5. Data analysis
3. Conclusions:
• As Newton’s Third Law states, “For every action, there is an equal and opposite re-action.” This was exactly the case for this experiment. Pressure being the force, over area created downward movement due to gravity and the weight of the water expelled the water out of the holes by propelling them in a clockwise direction due to the placement of the holes in the left corner. If the weight was heavier, the speed of the carton would move much quicker. If the weight was lighter, the carton would move slower. This was all due to the pressure becoming much weaker as it loses
In this week’s lab we had to determine the density of a quarter, penny, and dime. My question was “How does is each coin?” Density is the amount of mass in an object. To find the density of each coin in this lab, we used a triple beam balance to find each coin’s mass and a graduated cylinder to find their volumes. With all this information, I can now form a hypothesis.
a. Water boils to produce steam at 100 C (212 F) b. Water produces gas with sodium metal c. Water and oil separate when combined d. Water dissolves sugar 22. In the experiment, students put brine shrimp in water with different concentration of salt and counted the number. Which of the following changes to the experiment will increase confidence in the validity of the result? a. Count the number of dead brine shrimp instead of living brine shrimp b. Add more brine shrimp to the water with the highest salt concentration c.
But, after retesting the experiment they realized that was not the case. Only the presence of the mouse seem to stop the elephant in their tracks. The independent variables in this experiment were the methods (such as the elephant dung, the string, the mouse) used as well as the breed of the elephant and mouse. The dependent
8) Explain how each experiment type (question 7) differs from the
Elijah Brycth B. Jarlos IX-Argon 1. Multicellularity is a condition of an organism to have multicellular cells. An example of a organism who has multicellular cells are plants, animals, and humans. The main reason of why scientists have a hard time finding a good set of existing organisms to compare. Is neither the first set of organisms which is being compared is dying as fast as the second specimen is being examined or they just can’t find the right species.
Adrian Molina December 1, 2015 Biology Lab The Affect of Cigarette Extract on Food Vacuole Introduction a. background Tetrahymena are Single celled cicilated protists, which are known to tolerate a diverse range of environments. Tetrahymena are often used in experiments because they are easy to culture and have similar life processes as multicellular organisms. Tetrahymena is covered with short hair-like projections or cilia, that sweep food particles into its oral groove.
Also, the pictures above show how the egg changed from being tight and solid to being flexible. The observations also say that the egg felt like a water balloon and was full of water inside. Overall, the egg greatly shrunk in size. Finally, when the egg was placed in corn syrup, it floated on the surface of the solution. This was because the egg floated in solutions hypertonic to its inside.
The container was built to decrease the impact of the force at each drop. The container was able to successfully protect
Step 3: After, shell is removed, carefully remove egg from vinegar and place on a paper towel. Step 4: Record observations of the egg after vinegar. (texture, how it looks, etc……) Step 5: Get your triple beam balance and weigh the egg in grams (remember to place a paper towel underneath egg while weighing) Step 6: Record Measurements Step 7: Place an egg in a one of your 2 cups before placing egg name cup distilled water Step 8: Pour distilled water on top to cover the egg Step 9: Place plastic wrap on top of cup to cover the egg filled with distilled water Step 10: Now take your other egg from the vinegar used to take out shell. Step 11: Record observations of the egg after vinegar. (texture, how it looks, etc……) Step 12: Get your triple beam balance and weigh the egg in grams (remember to place a paper towel underneath egg while weighing) Step 13: Record measurements Step 14: Place the second egg in your second cup Step 15: Pour corn syrup on top of the egg to cover
The hypothesis for this project was “If a soccer ball has less regulation air pressure, then the distance the ball travels when kicked will be less.” It was therefore rejected. The soccer ball with less air traveled farther than the soccer ball with more air. The average distance of the soccer ball with less air traveled 29 yards, and the soccer ball wind or that I was tired.with more air traveled at an average distance of 19 yards. could’ve been caused by the It Everything went according to plan except that the hypothesis was rejected.
INTRODUCTION A gas chromatograph (GC) can be utilized to analyze the contents of a sample quantitatively or in certain circumstances also qualitatively. In the case of preparative chromatography, a pure compound can be extracted from a mixture. The principle of gas chromatography can be explained as following: A micro syringe is used to inject a known volume of vaporous or liquid analyte into the head or entrance of a column whereby a stream of an inert gas acts a carrier (mobile phase). The column acts as a separator of individual or chemically similar components.
DESIGN PSOW Ajit Rajendran 13H To Determine the Time Taken for a muffin paper cup to reach the ground, while Changing the Height of each experiment Introduction: In this experiment the aim is to determine the time taken for an empty muffin paper cup to reach the ground, by changing the height the empty cup is dropped from. Both variable mentioned are going to measured (height and time taken), when conducting the experiment. In order to have a fair experiment, certain factors will be kept the same throughout the experiment: the same paper cup will be used, the dimensions of the paper cup will be constant (where external factors do not affect the shape), the method in which the paper cup will be dropped.
This experiment has to be carried out carefully
Joshua Miller 12/18/17 Fermentation Lab report Introduction The term fermentation refers to the chemical breakdown of a substance by bacteria, yeasts, or other microorganisms, typically involving effervescence and the giving off of heat (wikipedia). Sugars are converted to ethyl alcohol when fermentation happens. In this experiment we determined if yeast cells undergo fermentation when placed in a closed flask with no oxygen. Glucose and yeast are mixed together in a closed flask and allowed to incubate for about one hour.
Experiment #7: Column Chromatography of Food Dye Arianne Jan D. Tuozo Mr. Carlos Edward B. Santos October 12, 2015 Abstract Column chromatography is the separation of mixture’s components through a column. Before proceeding with the column chromatography itself, a proper solvent system must be chosen among the different solvents. The green colored food dye is the mixture whose components are separated.