Discussion
The results of this lab helped determine which tools are best to measure different objects. In Station 1, a yellow metric ruler, an orange metric ruler, a wooden ruler, and a measuring tape was used. The tool with the highest degree certainty was the orange metric ruler. This is because the orange ruler had tick marks for each 10th(0.1). The tool with the lowest degree of certainty was the measuring tape because it kept moving and it was difficult to keep it straight. For Station 2, a wall clock, a digital stopwatch, and a timer was used. The tool that had the most accurate measurement was the digital stopwatch because it measured into the 10th(0.1) place automatically. The tool that was least accurate was the wall clock because
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The tool with the highest degree of certainty was the non-mercury thermometer because it didn't have to be calibrated and there were tick marks to make the measurement more accurate. The tool that had the smallest degree of certainty was the dial 2 thermometer because it very wide. This caused the measurement to be harder to make. In Station 4, a spring scale, an electric balance, an analytic balance, and a one pay balance was used. The most accurate tool was electric balance because no calculations or estimations needed to be made. The least accurate tool was the spring scale because the scale kept moving and block couldn't be measured without a basket carrying it, making the measurement inaccurate. In Station 5, a graduated cylinder, a beaker, and an Erlenmeyer flask was used. The tool that had the highest degree of certainty was the graduated cylinder because there were more ticks. This made the measurement more accurate because the water level was closer to the markings. The least accurate tool was the Erlenmeyer flask because the spaces between the markings were large so the whole number had to be guesstimated. In station 6, #1 was accurate because the X's exactly on the lines. #2 was precise because multiple X's were close to
2. The least precise measurement was the temperature but more specifically the freezing points of the solutions and solutes. Due to the freezing point only having two significant figures, the data is limited to two significant figures as well.
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.
Firstly the main apparatus was set up (a retort stand with a bosshead and clamp attached)
A scale conversion is calculated and the measurements from each thermometer are examined to see how closely correlated they are. _M___
Step 3: Use the thermometer to identify and record the temperature for room temperature, in your refrigerator, in your freezer, and then research the temperature of boiling water (do not take this temperature) and record them in Table 2.
Procedure: Using distilled water, premeasured containers and objects determine displacement of fluids and density of objects. Use ice and heat measure temperatures in Celsius, Fahrenheit and Kelvin.
Abstract: This experiment introduced the student to lab techniques and measurements. It started with measuring length. An example of this would be the length of a nickel, which is 2cm. The next part of the experiment was measuring temperature. I found that water boils around 95ºC at 6600ft. Ice also has a significant effect on the temperature of water from the tap. Ice dropped the temperature about 15ºC. Volumetric measurements were the basis of the 3rd part of the experiment. It was displayed during this experiment that a pipet holds about 4mL and that there are approximately 27 drops/mL from a short stem pipet. Part 4 introduced the student to measuring
Seven various household objects were chosen to measure using a digital gram scale. Each object’s mass was estimated by lab students and recorded in data table 4. A quarter, ball point pen, rubber bulb, large paper clip, green crayon, house key and a copper penny masses were estimated and recorded in data table 4. Each object was placed on the scale individually and its actual measurement was recorded in data table 4. As we started estimating the household objects we were often not correct in our estimations. As we measured more and more objects, we got better in our estimations by comparing objects with known masses and comparing them with the unknown
Throughout lab one we were introduced to many different forms of measurement, whether its using a ruler too measure length, a digital scale to measure weight, and also many different sized and shaped flasks to measure different volumes. Another key measurement of this lab was to teach the
The thermometer isn’t the only thing reaching the century mark this summer. A week ago Saturday there was a celebration at First Baptist Church that was a century in the making — the 100th birthday of Dumas resident Oleta Smith.
Fahrenheit was the first in the world to produce two thermometers that showed the same temperature. Encouraged by the success, the scientist decided at the same time and invented a temperature scale. Fahrenheit decided that zero should be at the lowest temperature. At that time, the lowest temperature he got when measuring the temperature of water with salt. And later he learned that the freezing temperature of water was 32 degrees, the boiling point was 212 degrees, and the temperature of the human body was 96 degrees. All these studies so delighted the British that they called Fahrenheit in the Royal Society and began to actively use the temperature scale of Fahrenheit.
IV.Within the experiment, we will use a total of three Items to achieve or maintain accurate data. We will use a compass rose to determine direction, a meter stick to measure the distance we have traveled, and a piece of tape to mark the origin and the point in which a person stops.
One possible source of error that can affect the results was that a mercury thermometer was used instead of an electronic one. The use of a mercury
The objective of this experiment was to determine if temperature has an effect on the duration of movement of P. scaber. Our experiment showed that temperature has no effect on the duration of movement of P. scaber. Although the mean duration of movement was smaller at the lower temperature (10oC) compared to the higher temperature (25oC) in trial one (see Figure1), the difference in mean is not statistically significant because the p-value (0.10) was greater than the alpha value (α=0.05).
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.