A-1. Describe the goal of the experiment or state the hypothesis or problem to be solved. Describe the purpose for doing the experiment ( why is it important).
The goal of the experiment is for me to become familiar with the various types of glass and equipment that will be used later throughout the Science course. Also, we need to understand words like meniscus, parallax, the difference between accuracy and precision, the use of a metric system, the use of scientific notation, and etc. Furthermore, the purpose for doing this experiment is to understand why measurements is not precise and how to describe uncertainty and error. This is important because we’re going to face the same problem every time we do the same type of lab, and when the
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The word average means “the typical result in your measurements”. The word Range means “the difference between the largest and smallest values”. The word Percent Difference means “ a way of comparing two different results or measurements”. The word Uncertainty means “a set of possible outcomes of the “true” value. Finally, the word Meniscus means a curve on top of the surface and it can be any type of liquid.
B-2. Discuss what might be the possible outcome of the experiment. What kind of results (data) do you expect to gather?
The possible outcomes of the experiment is that we are probably going to make an error with our measurements and we are probably not going to read the measurements correctly. In addition, the kind of results that I expect to have in the lab is a rather decent or close enough to the actual measurement of the actual thing I’m measuring. The reason why I said that the measurements would be close is for the reason that we are going to measure a specific thing a couple of times and average it all
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For example if we were to measure a cube we would find the measurements of how many inches was the cube, how many cm, how many mm, and finally how many meters was the cube and we would write all the information down. After we would do the same for the weight but with different measurements. But of course if it was for water we would use different measurements but it’s the same idea for everything. This also includes writing down all the calculation we’ve made
C-2 Describe the process used to analyze the data ( what equations, graphs, charts, etc will we use to analyze data.
The process that we will use for the water in the cylinder is we will fill a 100 ml mark and pour the contents in a dry 100ml flask about twice and we will find the percent difference. And to find the percent difference we will have to use the equation right here. For the Cube we will weigh six stoppers but once at a time and compare the results so that we could find the average of all six cubes. We could use the equation that does the averages and that is to add up all the measurements and divide by six because we have six cubes and we get our answer.
C-3 Discuss laboratory safety
The slope, found by the rise over run of 4.5 over 4, tells the average density for the samples.
BEFORE CONDUCTING THE EXPERIMENT - You should already have submitted to your teacher an EXCELLENT Investigation Design that included:
Step 2: The volume of both tanks is equivalent to 84,780. You utilize the recipe, and module the numbers to get the answer.
designing an experiment, we have to design an experiment and we need to confirm the
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.
Think about what you need to measure before you measure. i.e., I want to measure to see how long Charles’ body is
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
1. Objective: My objective for this experiment is to find the mass, volume, and density of a variety of objects. After this, I will record my data and place a select few of the items on a graph. My hypothesis for this experiment is, "If I measure the mass of every object, the wooden ball will have the least because it seems to be the smallest and most lightweight. " 2.
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
For the second part of your assignment, you will apply the scientific method to a real-life situation. You will select a problem that leads to a testable question, similar to the scenarios presented in Part I and explain how you would follow each step of the scientific method to try and answer the question or solve the problem. Note: you are describing only what you would do at each step; you will not be conducting the experiment.
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 nucleus is composed of protons and neutrons. These two particle are called nucleons, and can be found in the nucleus. The protons are all positively charged and repel each other, this is called the electromagnetic force. This pushes the protons apart but they are held together by another outside force. This is called the strong nuclear force.
The overall purpose of the lab is to have the students practice designing an experiment, gathering data, and then analyzing that data to form a conclusion using the scientific method. It also served to understand key terms such as hypothesis, dependent variable, and independent variable. The specific objective of this lab is to determine whether certain human body parts experience allometric or isometric growth. Allometric growth defines when certain parts of an organism grow at unequal rates in comparison to its whole, while isometric growth is when all parts of an organism grow at the same rate in comparison to the entire organism. The specific purpose of the lab is to determine whether or not specific human body parts experience allometric or isometric growth by comparing the ratios of height to two specific body parts, in the students’ case the right hand length and head circumference, in students and newborns. The students formulated the tentative answer that if a team of four compared their height to right hand length ratio, as well as, their height to head circumference ratio, to those of a newborn’s, then the students will discover that the right hand and head experience allometric growth in humans.
They are given several minutes to explore. Students must find a desirable question to research and conduct the experiment based on their observations.
In the first part of the experiment, the fundamental quantities-length, mass and time were estimated simply by guessing. Even though it can be helpful sometimes to test a hypothesis, huge percentage errors in the measurements showed that human errors can be significant and therefore, we need more sophisticated techniques for more accurate measurement. For instance, using Vernier calipers is more precise than guessing the length or more accurate than the ruler.