lab write up for science

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i am done with half you just have to write analysis and conclusion 1 page long

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Prachi Patel 9/30/2014 Core-2 How Streamlined is each shape? ★ Purpose The Purpose of the experiment was to determine how streamlined each clay shape is. ★ Background Research From the background we know that gravity pulls the object down and the force of friction with the water pushes it up. The more streamlined the shape is, the easier it can overcome the force of friction. The meaning of streamlined is that design or provide with a form that presents very little resistance to a flow of air or water, increasing speed and ease of movement.the Friction is the force resisting the relative motion of solid surfaces, fluid layers, and material elements sliding against each other. There are several types of friction Dry friction resists relative lateral motion of two solid surfaces in contact. ★ Hypothesis If six clay shapes are dropped down a tube of water then the bullet will be the faster because it is slim and pointy. ★ Materials 1. Clay 2. Weighing Paper 3. Plastic Paper 4. Tape 5. Water ★ Equipment 1.Beaker 2.Balance (Both) 3.Funnel 4.Golf Tube 5.Calculator 6.Blue Basket Prachi Patel 9/30/2014 Core-2 7.Towel 8.Rubber Stopper 9.Stopwatch ★ Procedure (Day 1) Step 1: First day of experiment we all will get the materials and equipments in the blue bean. Step 2: All people in the group will make at least one shapes for the experiment. Step 4: All shapes will be exactly 12 grams Step 5: Make sure you use electronic balance and measurement balance. Step 6: There will be six different type of shapes Teardrop, Cone, Bullet, Square, Cylinder and sixth shapes will be whatever shape comes to your mind. Step 7: Make shapes as much softer as you can. Step 8: Make all shapes and then make sure you check the grams of the clay shapes one’s again and make sure it in 12 grams and measure it with electronic balance. Step 9: Finally use plastic paper to reap each shapes and put in the counter. Step 10: Do rest of experiment next day. (Day 2) Step 1: Take the blue bean and unreap the clay shapes. Step 2: Take the golf tube and hold on to it. Step 3: Make sure each person in your group take one at least one job to do during the experiments. Step 4: One person job is to do stopwatch, observation, data table, fill out the golf tube and make sure who every in doing the observation and data table through the experiments. Step 5: Before you start the experiment make sure whoever in timing the speed of the shapes tell that person to watch properly when the shape touch the black line of golf tube start the timer and when if touch the ending line of golf tube stop the timer. Step 6: Start the experiment Have Fun!!!!!! Step 7: First Fill out the beaker with water. Step 8: make sure you do the 2 trials for each shape. Step 9: put the funnel at top of golf tube and fill the water in the golf tube. Prachi Patel 9/30/2014 Core-2 Step 10: Start dropping the shapes in the golf tube and start timing shapes the when you done with the experiment make sure finish the 2 trials for each shape. Step 11: share the observation and data table with your group members. Step 12: Done with everything CLEAN UP. ★ Variables Independent Variable: Shape of clay Dependent Variable: The speed of shape Controlled Variable: 1. The Mass of the clay is 12 grams for each shape. 2. There will be 2 Number of trials pre shape. 3. Type of numbers same shapes ★ Data Table Object Numbers Description Trial #1 (seconds) Trial #2 (seconds) 1) Teardrop 3.02 3.12 3.07 29.32 2) Cone 3.39 3.33 3.36 26.79 3) Bullet 2.17 2.23 2.02 40.91 4) Square 4.30 4.40 4.35 20.69 5) Cylinder 3.13 3.04 3.37 27.52 6) Speare 4.00 4.28 4.14 21.74 Teardrop Corn ★ Observation Bullet Average time (sec) Square Cylinder Speare Speed (cm/sec) Prachi Patel 9/30/2014 Core-2 Trial #1 1.Teardrop: Spin clockwise 2.Cone: Drop straight and calmly 3.Bullet: Went 360 straight down 4.Square: Hit sides slowly 5.Cylinder: Spin 360 6.Speare: Spin around slow ★ Graph ★ Questions/Answers Trial #2 1.Teardrop: Spin clockwise 2.Cone: Between sides a bit 3.Bullet:Tilt to left bit 4.Square:Slip top over bottom 5:Cylinder:Quick to bottom 6.Speare: Didn't hit sides Prachi Patel 9/30/2014 Core-2 1. The most streamlined to least streamlined in Bullet, Teardrop, Cylinder, Corn, Speare, Square. 2. The more streamlined than others in bullet because the bullet in pointy from the bottom and others shapes for example Cylinder in straight circle. 3. No, it not will make sense because if we use large tube and large clay shapes there in not any difference between small tube with small tube with small shapes large tube with large shapes and i would say yes if we have to do experiments with large tube and small shapes. 4. I guess No, because trying experiments in the air did not make accurate results from the air experiments if we will do in the air the shapes will come straight to the bottom and stuck in the golf tube that’s why i think that the the experiments with the water is better. 5. The results will be lot of different because if we will do experiment without the water the shapes will go quickly in the bottom of the tube and it will stuck lot in the golf tube. 6. ➢ Timer start later ➢ Clay shapes put in after timer starts ➢ Shapes are bigger than others ➢ water could splash ➢ Golf tube angled ➢ Not enough water ➢ pour in too much water ➢ Equal amount of water in tube ➢ The water ★ Analysis Prachi Patel 9/30/2014 Core-2 ★ Conclusion The Purpose of the experiment was to determine how each streamlined each shape is. My hypothesis was If six clay shapes dropped down in the water then bullet will be faster because it is slim and pointy and my hypothesis was correct. in the first trial of experiment with bullet results was 2.17 seconds and in the second trial the results was 2.23 seconds and the average time of bullet was 2.02 seconds and the speed was 40.19 seconds that’s why the bullet was very streamlined shape in the experiment and the least streamlined shape in the experiments was square with the speed of 20.69. I think the results turned out this way because the bullet was the really skinny and rally point from the bottom because of that the bullet went 360 straight bottom of the tube in the first trial and in the second trial the bullet tilt to left bit and the the bullet did not stuck anywhere the half of class think that the bullet was faster and some people hypothesis was correct too the think that bullet will be faster and their hypothesis turned out correct. To improve this experiment next time i would suggest to change the grams of clay beside of small golf tube and small clay shapes i would say that we can use large golf tube and small clay shapes and we can change 2 trials to the 3 trials so we can get some more accurate result in out data table and change the water every time we dropped the shape in the water. To follow up experiment to learn more we can do more trials and to make sure the timer is starting on the right time and ending at the right time or try to make more clear observation. I think my new investigative question will be what if we try the experiment with dough besides clay and the question for this experiment will be How fast the dough shapes go to the bottom of the tube?. Prachi Patel 9/30/2014 Core-2
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