Thursday, November 28, 2019
Density Lab Report Sample
Density Lab Report Paper Calculation for uncertainty of the mass of water The mass of the water is taken in 5 decimal places, therefore, the uncertainty of its mass is extremely small, and hence, it is negligible. Calculation for uncertainty of the density of water The gradient of the minimum slope is 995 The gradient of the maximum slope is 1040. 2 The uncertainty of the density is determined by the difference of gradients of he minimum and maximum slope and then divides by 2 The uncertainty of the density of water = 1040. 2-995 = Ã ±22. Keg/mm Calculation of Average Density of the Water The density of the water is the gradient of the slope, which is shown in the graph which is 1024. 1 Keg/mm Ã ±22. Egg/mm Using the processed data in Table 2, a graph of Volume of water against mass of water is plotted. Graph 1 Graph 1 show that there is a positive relationship between the volume of water and mass of water. The line of best fit is a straight line. The uncertainty for the volume of water doesnt really make an impact on the mass of the water because unman error occurs. For the x-axis, the uncertainties were calculated and shown in Tablet. Conclusion: Comparison with hypothesis The hypothesis at the beginning of the experiment was density of water is 999. 97 Keg/mm according to Pouched . Based on the results obtained in Table 2 and Graph 1, the average density is 1024. Egg/mm Ã ±22. Egg/mm. If uncertainty is minus away, I will get a density of 1001. 5 Keg/mm (1024. 1 Keg/ran- 22. 6 Keg/mm). The data doesnt support the hypothesis. I didnt get an exact density of 999. 97 Keg/ mm. There is a difference of 24. Keg/uniform the actual density. 1024. 1 Keg/mm 999. 97 Keg/mm = 24. Keg/mm Evaluation: Accuracy and Reliability of the Results The average density doesnt support the hypothesis. The difference is 24. Keg/ mm. This is because of the water. The water isnt purified enough as we use the water from the tap. There are some other impurities in the water. I didnt purify or filter the water until I get impurity free water. Analysis of Random Errors Random Errors Improvements made/ Ways to Improve The reading of the volume of water. When water is poured into the measuring cylinder, I took the reading. Take the reading few more times to ensure an accurate reading of the volume of water. We will write a custom essay sample on Density Lab Report specifically for you for only $16.38 $13.9/page Order now We will write a custom essay sample on Density Lab Report specifically for you FOR ONLY $16.38 $13.9/page Hire Writer We will write a custom essay sample on Density Lab Report specifically for you FOR ONLY $16.38 $13.9/page Hire Writer Analysis of Systemic Errors As the experiment only needed apparatus like digital balance and measuring cylinder, there werent much systemic error. The errors and uncertainties are mainly due to human and random error. This happens when I was taking the reading from the measuring cylinder, parallax error occurred. Hence, the experiment should be repeated more times. Besides that, error occurred when was taking reading from the digital balance due to the surrounding factor. Therefore I switched off the fan and make sure there is no any other digital gadget near the digital balance. Density lab report Sample Density lab report Paper The density of water is 1, so in order to keep the film container from inking, the density of the sand-filled film container must be less than 1. The equation for density is D=m/V, where m is mass and v is volume. To find the volume of the film container, use the equation V=3. Array, where r is the radius and h is the height. My hypothesis is that if the density of the sand-filled film container is less than the density of water, then the film container filled with sand will float. But, if the sand-filed container does not have less density than the water, then the container will sink. The independent variable is the amount of sand in the film container. The dependent variables are the mass and if the elm container floats or sinks. The control variables are the volume, bucket, and the amount of water in the bucket. Materials 1) Scoopful 2) Black sand 3) Paper 4) Pencil 5) Lab handout 6) Film container 7) scale 8) Bucket 9) Water 10) Meter ruler Procedure 1) Receive lab handout 2) Gather materials (scoopful, black sand, film container, meter ruler, paper, pencil, scale) 3) Turn on scale 4) Zero the scale 5) Measure the radius of the container in centimeters using the meter ruler 6) Use the formula V=3. Array to find the volume of the container 7) Record the volume of the film container 8) Add/remove sand in container ) Weigh container on scale 10) Calculate density of the film container using the formula 11) Repeat steps 8-10 until targeted mass and density is acquired 12) Record measurements 13) Drop container in water and see if it floats or sinks 14) Record data Data/Results The weight of our sand filled container was 47. Egg, and it sank when we placed it in the water. We will write a custom essay sample on Density lab report specifically for you for only $16.38 $13.9/page Order now We will write a custom essay sample on Density lab report specifically for you FOR ONLY $16.38 $13.9/page Hire Writer We will write a custom essay sample on Density lab report specifically for you FOR ONLY $16.38 $13.9/page Hire Writer The rest of the class had different measurements and results Group number Weight (g) Sink or float? Group 1 6. Egg Float Group 2 47. Egg Sink Group 3 25. Egg Group 4 47. Egg Group 5 43. Egg Group 6 43. Egg Group 7 9. Egg Group 8 40. Egg Group 9 29. G Group 10 34. Egg Analysis The chart above shows the calculations of each groups mass and whether or not it floated. The lightest sand-filled container was 6. Egg, and the heaviest was 47. Egg. The group with the heaviest mass that stayed afloat was Group 10, with a film container with a mass of 34. G. Groups 1, 3, 7, and 9 also had sand-filled containers, but were not the heaviest that could float in water. The density of water is 1, so we needed to calculate the greatest mass that is less than 1. In order to calculate the density of an object, the equation d=m/v, where m is mass and v is volume. First, use the formula V=3. Ohm where r is radius and h is height of the container. Then, choose a density like 0. Egg for the equation. Then s olve for the mass and add sand to the film container match the mass. That will get approximately the greatest mass that the sand-filled container could weigh without sinking in water. The data supports the hypothesis because all of the film containers with a density less than 1 floated, while the other film containers with a density greater than 1 sank. A change that could be done to the experiment would be to add another try to drop the sand-filled film container in he bucket of water. Conclusion In this lab, sand was added to a film container to see how heavy it could weigh without the film container sinking. My hypothesis was that if the density of the sand-filled film container is less than the density of water, then the film container filled with sand will float. But, if the sand-filed container does not have less density than the water, then the container will sink. In this lab, this hypothesis was proven correct because all of the film containers with density less than 1 floated, and those with density greater than 1 sank. This experiment an be related to the real world if someone wanted to figure out how heavy and object could be and still stay afloat in water.