Low Average Distance Lab Report

However the inconsistencies in the data were that we had designed a fair test and therefore we could only test on modification at a time. One inconsistency in the data depended on which person in my group wound the lever and string which propels the mousetrap car to go down the runway this causes an icosistinsy in the data as each one of us will whines the string on the mousetrap a different way therefore causing an inconsistency in the data.

Another way the lab was inaccurate is because the throwing aspect wasn’t the controlled variable. That being said we couldn’t rely on the fact that one is more fit than the other. Just because one flies further than the other doesn’t mean that it is more fit. That being said, if the bird flew the furthest without actually being that fit in the real world, it could mess up our data.

In this lab experiment our main focus was to get skillful in using tools such as the metric ruler, balances, thermometer, and graduated cylinder to capture measurements of length, mass, temperature and volume. Additionally, this lab helped us to become more familiar with the uncertainty of measurements, as well as becoming efficient with rounding our measurements to the correct numbers of significant figures. Our results are measured consistently with rounding to the closest answer we could possibly acquire as the data can tell you.

However, we must perform some analysis on this data to confirm that the results for our class really are significantly different from the average. To do this, we performed a chi-square analysis on our data. Our chi-square value is 14.733, and the degrees of freedom are 6. The resulting p-value falls between 0.05 and 0.02. Therefore, we conclude that the data from our class indeed does not fit the average.

The purpose of this lab was to save a little gummy worm named Sam from drowning. In addition, one of the labs key terms was a hypothesis which is a supposition or proposed explanation made on the basis of limited evidence as a starting point for further investigation. Furthermore, we also learned that an independent variable is a factor that is changed during the experiment. On the other hand, the dependent variable is the factor that is observed or measured during the experiment. To begin with, the experiment the hypothesis formulated was if we reshape the paperclips into hooks and pick up sam, and the lifesaver (without touching them), then the lifesaver would be stretched enough for Sam to go through it.

A buffer is a solution that resists changes in pH when H+, OH-, or H20 is added. By using standard lab equipment, a lab pro diagnostic tool, and acidic and basic solutions, the pH can be found. By recording the pH while adding a base or an acid gradually to a buffer solution you can find the capacity of each buffer to resist drastic changes in pH. The best buffers will keep a solution from becoming either too acidic or basic with the addition of a strong base or acid.

There were many opportunities for error within this lab due to the procedure the group decided to follow. However, the percentage error was not very significant, with a 1.12% to 6.71% difference between the actual and predicted velocity. The slight difference between the percentages could have been a result of parallax, instrument resolution, environmental factors, and the lack of trials. Once major source of error was the group’s decision to bypass collecting many data trials in the interest in time. This may have introduced biased sample fallacy into the conclusion because there were only two trials per a flying toy and which was little evidence to support the statements made about the relationship between velocity, acceleration, and circular motion. For the next lab, the group plans to conduct at least three trails and then use the average to avoid this bias. Environmental errors present during this lab included classmates walking into the flying toy while the group was collecting data,

The hypothesis was, If any of the products (orange juice, coca cola, taco sauce) cleans pennies, then the coca cola will clean the pennies the best. This was rejected. None of the products actually took of dirt because when the pennies were weighed it never decreased it just stayed at 2 grams each time. Before any of the trials the pennies weighed 2 grams. After the first trial (30 minutes) the weight was still 2 grams. For the last trial after the 30 minutes it still stayed the same which was 2 grams. So all the data and the average was at zero on the graphs because there was no dirt taken off any of the pennies. In this case the graphs showed no trend, they were all at zero. The products were suppose to clean the pennies but it did not work out as planned so they did not clean the

Once the scientist finished analyzing the data collected they were able to determine if their hypothesis was correct or incorrect. The final results of the scientific hypothesis was proved to be incorrect. The scientist believed that if the precipitation was to increase at Darwin and Wallace Island, the finch beak would enlarge in size. The data collected determined that the increase of precipitation, made

It takes about 15 days for lab results to be complete once samples are received. The FADL emails lab results to the requestor and will CC you in the email. It is important that you keep track of the lab results; you will need to make a deposition for all lab positive or failed lab results. Notify CW5 Finch or APHC representative when samples contain pathogens. AR 40_657.pdf Chapter 5 section 5-6 give detailed instruction for nonconforming lab samples. When you receive a positive sample lab result that is non-pathogenic, you will make the decision on the which course of action to take. Recently I received lab results for product that had a high SPC counts. I contacted the facility management address the issue, issued the manager

The purpose of this experiment was to see if the three objects presented were made of the same material. The objects presented were a cylinder, cube, and a rectangular prism. Through examining the physical properties of the objects the best possibility in finding the substance of each object was through finding the density. Density is defined by a physical property between the mass and the space taken up by the substance. Density is found by using the formula mass divided by volume.

This is because that piece of data is the outlier due to its values being significantly different than all the others because of a spillage. Therefore this data is, in fact, false. Thus, if 3 pieces of data were taken for each category of temperature, the amount of carbon dioxide gas lost in 1 minute at a temperature of 27°C would have been significantly less than 4.3g because the mass of carbon dioxide gas lost due to the spillage would have been a discarded piece of data and the experiment would have been done two more times to get an accurate average. This experiment could have also been more effective if there was more equipment to be used if errors occurred, such as the spillage, or even to get more data for each category of temperature so the overall information in the chart is persuasive and

Sensitive variables Number of Tubes A logarithmic relationship exists between the number of tubes used in the system and the overall required length. Initial reductions in length are substantial, however the relationship sharply decays as the number of tubes increases. Reductions of length have to be balanced with the similar reductions in velocity.

Investigative Question What is the relationship between the size of a particle and its flammability when heat is applied in the form of a flame? Hypothesis The particle size is directly proportional to the flammability/combustibility of an item when applied to a flame. Variables Independent variable: Particle size Dependent variable: Flammability

In this experiment, we experimented finding the fundamental quantities of length, mass, and time using many laboratory tools. We used a Vernier caliper, stopwatch, rulerm meter stick, wooden block, metal block, Dial-o-gram, different masses, and circular objects. We took into consideration the uncertainties of many different tools and objects into our experiment. The inherent uncertainties of different measurements and ways to propagate those uncertainties were learned during this experiment.