Experiment 1- Sandpaper After rubbing the index finger over very coarse sandpaper a few times‚ the rating for the sandpapers coarseness on a scale from one( being very soft) and seven (being very coarse)‚ the rating is a 5 for the first perception. The second time of rubbing an index finger over the same sandpaper‚ the rating again is a five. My perception of the coarseness of the sandpaper is stayed the same. Only my fingers felt smoother and softer from rubbing on the sandpaper (AIU Online
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What has been done before in this area? After Homogeneous tile is introduced‚ it is probably more favorable over ceramic tiles due to its characteristics. Homogeneous tiles are produced at a higher temperature as compared to ceramics tiles‚ which means it would be able to endure a higher temperature in hot climates. This is beneficial‚ especially during summer. It is harder and absorbs lesser water than ceramics tiles. This shows that the material is tougher and will be good for bearing stresses
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the two types of environments that I had decided to experiment with. The two types of habitats that I choose were saran wrap which is smooth and sandpaper that is rough. How I set up this test was I had a choice chamber with a barrier in the middle that had a little door cut out of the bottom center so the pill bugs could walk through. I placed sandpaper on the bottom of one side and saran wrap on the bottom of the other side. After placing the pill bugs into the chamber I observed them for 10
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Adaptation Name Course Lecturer Date In the experiment involving sandpaper‚ I rubbed the index finger on the sand paper many times and rated the coarseness as directed. After resting for two minutes‚ I rubbed the index finger for the second time on the same sandpaper. After conducting the experiment for the first time‚ the sand paper felt very rough. The rating was at six. The second time‚ the sandpaper was not as course as compared to the first time‚ the rating was at three. The experiment
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A Detailed Lesson Plan in Science and Health for Grade Three Pupils By: Angel Rose A. Moywela Learning Competency: Describe the different characteristics of solid. I. OBJECTIVES: At the end of the lesson‚ the pupils are expected to: 1. Describe the different characteristics of solid. 2. Classify solids according to shape‚ hardness‚ texture and color. II. A. Subject Matter: Classification of Solid B. References: PELC III Ramos‚ Ethel Grace A.‚ et al. Science Links: Worktext
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record my reaction to each experiment. The three experiments I chose to conduct are number one- the sandpaper experiment‚ number three- the index cards and flashlight experiment and number four- the water in bowls experiment. While conducting each of these three experiments I was surprised by the results of each of them. Experiment Number One: I rubbed my finger on the piece of coarse sandpaper and it felt very hard to my finger. After the two minute wait‚ I rubbed the same finger over the sand
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Title: INVESTIGATION OF DIFFERENT STATIC AND FRICTIONAL COEFFICIENT FORCES Part One Hypothesis 1. Wood- 25 degrees 2. Plastic- 10 degrees 3. Aluminium- 19 degrees 4. Glass- 23 degrees 5. Fine Sandpaper- 41 degrees 6. Coarse Sandpaper- 30 degrees Results |Column 1 |Column 2 |Column 3 |Column 4 | |Material on wood |Predicted arrangement
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businessmen established the Minnesota Mining and Manufacturing Co. to mine a mineral that they thought was corundum‚ which is ideal for making sandpaper. The mineral‚ however‚ turned out to be low-grade anorthosite‚ nowhere near as suitable for making sandpaper‚ and the company nearly failed. To try and salvage the business‚ 3M turned to making the sandpaper itself using materials purchased from another source. In 1907‚ 3M hired a twenty-year-old business student‚ William McKnight‚ as assistant bookkeeper
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Experiment 1 In the first experiment‚ I take a piece of sandpaper and rub my index finger over it and rate it on a scale on one to seven‚ soft to coarse. The first time‚ the sandpaper felt very coarse‚ so I would rate it at a seven. Upon waiting a minute‚ I rubbed my finger over it again. The sandpaper did not feel as coarse the second time‚ so I would rate it about a four. I waited another minute‚ and rubbed it again‚ the sandpaper felt less coarse‚ I would rate it at about a three. It seemed
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experiment one I took a piece of sandpaper and rubbed my finger across it a couple of times. The texture was about a 5 on a scale from 1 to 7 being very course. I could feel the bumps on my fingertip as my finger went across the sandpaper which made me ignored about the sensation. It also felt as though my finger was still on the sandpaper after I had it off of it. After waiting two minutes I then re did the same experiment by rubbing the same finger across the sandpaper again. At this time my brain
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