Experiment #1-
For experiment number one we had to take the volume of five different amounts of water with three different measuring tools. The three tools we had to use were a plastic rectangular box, a graduated cylinder, and a beaker. The differences between each tool are the box has no lines to measure volume so you have to calculate it by measuring, the graduated cylinder has very specific volume lines, and the beaker has less specific volume lines. The first step to the experiment is to pour an amount of water into your clear plastic box. To find the volume in the plastic box you have to find the width of both sides of the rectangle and the height of the water. The difficult part of this measuring portion is the ruler does not start at exactly zero and the rectangle sides and bottom have plastic areas were water does not fill. These issues cause variations in our classes data. Then you have to multiply the three measurements and that's your final volume. Your units should be cm3 because you multiplied three cm measurements together. The next step in the experiment is to pour the water from the box into a graduated cylinder. For this step it is important to be careful not to spill the water when pour or this will change your volume. Once the water is in the cylinder you read the lines and find the volume. You will notices there is a meniscus and you always measure from the bottom of the meniscus. After you have found the volume in the cylinder you pour the water carefully into the beaker where you do the same thing as you did with the graduated cylinder except for you have to make a rough estimate because the lines aren't as exact as the cylinder. The repeat the previous steps five times with different amounts of water. After finding the volumes of all five amounts of water and recording in our notebook we then graphed our results on a whiteboard. We had cm3 on the x axis and mL on the y axis. The next day we copied our graphs into our journals. The whole class had similar graphs.
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| Getting volume in graduated cylinder. |
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| Getting volume from rectangular box |
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| Our whiteboard graph of our data |
Experiment #2-
For experiment number 2 we had to find the mass and volume of rods of different materials. The materials were steel, aluminium, and acrylic. There were three bags each filled with different sized rods of the three materials. The first thing we do is mass all of the rods and record them in our notebook. Since we had a very sensitive scale we had to be very still to get a accurate reading of the rods mass. After massing and recording the rods we then find their volume. To do this we filled a graduated cylinder with water checked it volume, put the rod in and then checked the volume again. To find the the volume of the rod u have to subtract the second volume from the first. This works because the water allows us to know how much space the rod is taking up. Then we recorded our volumes in our journal. The next step is to graph. For this graph we used a online program called Logger pro. We used Logger pro to put in a line of best fit and it also gave us the correlation and slope. The next day we printed out our graph and put it in our journal. Then we compared with the class. We compared the slope of the steel, aluminum,and acrylic graphs and we all have similar slopes besides two groups whose slopes were consistently too low.
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| Graduated cylinder for measuring volume |
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| Our classes data |
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| My groups graph on Logger |
Mass, Volume, Density worksheet-
In this worksheet we had to compare some rectangular figures. In the figures their are dots. These dots represent particles of matter. You then have to compare the mass, volume, and density of the figures. Then we shared with the class our answers on the white board. Surprisingly all whole class had the same answers for all of them.
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| Problem #1 |
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| Problem #2 |
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| Problem #3 |
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