controlled variables in bouncing ball experiment

Bouncing a Ball Question: How does the height from which a ball is dropped affect its bounce? Twitter:@South7thScience! Devise a quantitative research question. The effectiveness of these maps to represent the actual bouncing ball experimental system is compared. Bouncing Ball Experiment Our simple experiment is to drop a ping pong ball weighed at 3 grams from a height of 1 metre then 90cm, 80cm, 70cm, 60cm, 50cm, 40cm and of course zero cm. The independent variables of this investigation. The factor that will be investigated in this experiment would be the initial height of the ball. Drop (do not throw) the ball from a carefully measured height using the meter stick. (2010), an environmental parameter (g or α) was suddenly changed during ongoing bouncing. Independent Variables: Are the Tennis Balls (the unopened cans, the 24hour open cans and the 1 week open cans. You change this variable to see if it makes a difference. Ask the students to pay special attention to how high the ball bounces and repeat this step again. Sep 6, 2014 - This Pin was discovered by RoseKidz Resources. Consider investigating the effects of club composition and ball compression on golf driving distances. Note that the table and graphs are labelled (table 1, graph 1) this is important for clarity when you refer to the results found during the discussion section. You must measure very precisely how far the ball drops and how high it bounces. bounces. Experimental Variables In order to determine the consecutive heights I recorded the sound of the bouncing ball. Make some observations. The dependent variable is the bouncing time T because this depends on the drop height. Discover (and save!) At the end of the experiment, everyone should use their calculators and figure the average bounce height for each ball in the experiment. Have them record their results. A controlled variable was that the bouncing stays more or less along the vertical. Hypothesis: —The Il h is hec c—oppud Materials: rubber ball, meter stick, graph paper, tape Experiment: A/o èæp = Control: Independent Variable: -The is Dependent Variable: he-is, A-he- +0 Constant Conditions: Procedure: la Tape meter stick to wall. These principles will be discussed. www.South7thScience.com! Despite this diversity, only few studies have ventured to transfer these theoretical in-sights to more macroscopic applications such as the control of actuator movements of robots @5#. 5 balls of Various masses 2. The weight of the ball For example, a ball dropped on sand would absorb more energy than a ball dropped on a concrete floor. Have them take turns: dropping each ball from an agreed height; determining the maximum height of the bounce. In any kind of experiment, there needs to be control of as many variables as possible — otherwise any results would remain equivocal. They identify variables to be changed, measured and controlled. Sample projects and experiments that can be turned easily into successful science fair projects Science Fair Projects - How To. This experiment requires a ball that will bounce and a meter stick or other measuring device. 1. Get them to share their ideas on which variables they can test, which they cannot test, and why. Lets try another one… The higher the temperature of water, the faster an egg will boil. We were trying to determine how high a tennis ball would bounce on 3 different surfaces. How high does a ball bounce?Aim: To see how high the bounce of a ball is. Controlled Variables: You can have as many controlled variables as you like. Controlled variables/ constants The person who drops the ball ... Stop the stopwatch when it the ball stops bouncing 8. Limitations: No professional equipment such as sensors or monitors could have been used to check exactly what height the ball bounced to on the first bounce. Bouncing ball physics is an interesting subject of analysis, demonstrating several interesting dynamics principles related to acceleration, momentum, and energy. Identify the independent variable. Dependent– Time it takes to cook. My variables are height, time for bounces, mass of ball, bouncing surface and number of bounces. The independent variable is the dropping height H because I choose it. The dependent variable is the bouncing time T because this depends on the drop height. perturbed human ball-bouncing trials. 4 Bouncing Ball. All variables were identified and controlled throughout performing the entire experiment. linearized high-bounce map. Newton's third law says that the floor will then push back on the ball, sending it soaring. Q. Team 5: Bouncing ball Design an experiment, where you study one factor relating to a bouncing ball. 4 - A well designed experiment using a scientific method with an independent variable, a dependent variable and controls for all other variables. Variables Fair testing Control: Identifying Controls & Variables p 16 Bouncing Balls : Remember & Think Q’s 1-4 Design an experiment Worksheet 1.4 jacplus: Words to Learn Independent variable. It is essential that the teacher gives the student an open-ended prompt. Measure from the bottom of the ball. Round theaverageto Tape 5. This is done to test the dependent variable by modifying the independent variable. Gather all materials. The changed variables are the height of where the ball is dropped from. In an experiment, you can collect the same data, but the statistical analysis is less likely to give you a high confidence limit. The experiment was performed by 13 participants, each participant performing 12 trials with three perturbations (either on g in session G, or on α in session A) separated by 12 or 16 s.In session G, the g was changed at the ball apex. 7th!GradePhysics!UnitMaterials! The … Why Do Some Things Stop While Other Things Keep Moving? Materials – 5 pts List the materials you used: 1. The dual purpose of Experiment 1 was to identify the control mode of rhythmic bouncing and to test the information (t up or h p) used to control racket period.To dissociate these variables, the normal physical relation between the ball’s launch velocity, flight duration, and peak height was altered by perturbing v b and g at impact for one-half cycle. Besure to perform 3trials, and allow time for team members torecord the data. ... 3-5-ETS1-3 Plan and carry out fair tests in which variables are controlled and failure points are considered to identify aspects of a model or prototype that can be improved. Data is collected directly from the experiment and the trajectory of the ball is plotted. Aim The aim of this experiment is to identify the relationship between drop heights and bounce heights of balls. This is the same as saying the air pressure is Data is collected directly from the experiment and the trajectory of the ball is plotted. minutes, years) but with a bouncing ball the event of a bounce is the measure. Change all the data into (seconds) and round them to the tenth place. Variables  Independent: - Type of surface the tennis ball is dropped on Dependent: - Height at which the tennis ball bounces Controlled: - Same ball - Height at which the ball is dropped - Amount of force applied - Person dropping the ball. Report this Ad. The trigger signal was sent 15 ms before the ball–racket contact to overcome the mechanical and electronic delay of the brake. Method: Top In order to collect all the data for this experiment, I will first gather all materials necessary. ), club brand, club size, ball brand, the person driving the balls. 5.At the end ofthe experiment, everyone should use their calculators and figure the average bounce height for each ball inthe experiment. Set a timer, and let them ―experiment‖ with the bouncing of each ball for one minute. Then have Person #3 and Person #4 test their balls. Four Experimental Assumptions (1) The evidence for exponential decay has already been discussed and it is a reasonable model for the bouncing ball. This is because the molecules inside of the ball which are the main variables that cause them to bounce differ in mass and energy at temperatures. Prior to the sample task, students investigated investigated forms of energy and energy transfers and transformations. Marker or Pen Methods/Procedure – 5 pts A numbered, step by step list of short instructions of how to perform the experiment, written in the passive voice, such that another student could follow and replicate the experiment. The brake was controlled by a solenoid and applied a brief braking force pulse to the rod to create the feeling of a real ball hitting the racket (Magnet-Schultz type R 16 × 16 DC pull, subtype S-07447). Controlled variables: 1) The same mass of the same ball 2) The same surface Apparatus: * Meter Rule * Tennis Ball * Camcorder * * * * * * * * * * * * Diagram of Experiment: * Tennis Ball Tennis Ball Meter Rule Meter Rule * * * * * * * * * * * * * * Method: * * The apparatus was set up as shown in the diagram. Hypothesis: If you increase the amount of borax in a bouncy ball, then the ball will bounce higher because you create more cross-links to make it more elastic. Research: The aim of this experiment is to determine a factor that affects the height of a bouncing ball. In both cases, the ball is controlled to a fixed point corresponding to one of the stable 1-cycle periodic frequencies. Determine how high the ball rebounds on its first bounce. Grades: Preschool and K-2 Length of Lesson: Approximately 45 minutes Related Video: “The Hawk Factor” episode Learning Goals: Independent-The temperature of the water. Discuss any variation in measurements, and get the students to suggest what the possible variables might be. Play this game to review General Science. Making Teams 8 / 8 From there, it may be possible to propose and test an alternative hypothesis, to narrow down the relationship between the variables. * Dependant variable: The height the squash ball bounces * Controlled variables: size and type of squash ball, height squash ball is dropped from, the way in which the ball is dropped. minutes, years) but with a bouncing ball the event of a bounce is the measure. An explanation for why each experimental step is important. 5 Bungee Jumps. Almost everybody, at some point in their lives, has bounced a rubber ball … Independent Variable: The temperature of one of the tennis balls is cooler compared to one that has not been changed in anyway Controlled Variable: - Same type of balls - Dropped from same height - Dropped in same environment - Dropped on same surface Independent, Dependent, and Controlled Variables If we decrease the height of the drop of the ball, then the number of bounces will increase, because as the height decreases, the ball will reach the ground faster and faster every time because the height of the drop is closer to the surface. An example of an independent variable is the height you drop an egg from to see if it will break. Drop first ball from 40cm and see how many times it bounces in 5 seconds using timer. Be sure to perform 3 trials, and allow time for team members to record the data. Variables: Dependent Variable: The height of each ball after it is dropped from an equal height. Controlled Variables– The egg. Duration variables in cycles C 0 and C 1 as a function of perturbation magnitude in Experiment 1. a Racket cycle period T r (mean ± SE). 7. Always a good practice to take repeated measurements across different regions of wire when determining the diameter of a thin piece of wire as it may not be uniform. The controlled variables were the height from which the ping-pong ball was dropped, the ... the best materical for bouncing a ping-pong ball, and carpet is the worst.1 The results of a carefully controlled experiment will help you make accurate predictions. I have actually been a big fan of Dover for a long time and my guess is you have too, only you may not even realize it. Step 2 – Leave the egg in the glass for 2-3 days. Which of these was most likely part of their original definition of the problem they wished to solve? and size 5 soccer balls. Step 1 – Get a raw egg and carefully place it into a glass or jar. Four Experimental Assumptions (1) The evidence for exponential decay has already been discussed and it is a reasonable model for the bouncing ball. The constants must be the mass of ball, bouncing surface, and number of bounces because they are going to be the same during the whole experiment. List the independent, dependent and controlled variables in the experiment. To control your experiment, you must pick a certain type of ball. An independent variable is a variable that can be changed or modified in a scientific experiment. This is the same as saying the air pressure is Dependent Variable: The dependent variable in this experiment will be the rebound height of the soccer ball. Let’s take a look at some of the variable options that might work. What variables did you control in your experiment? Finally, controlled variables (or "controls") are the variables that never change, such as the combination of ingredients used (you would change the amounts of the ingredients, but each batch of slime would use the same list of ingredients.). Repeat the experiment with Person #2 dropping their ball. In a well-designed and simple experiment, you would only have one independent variable. A: The height to which a ball will bounce depends on the height from which it is dropped, what the ball is made out of (and if it is inflated, what the pressure is), and what the surface it bounces from is made out of. Day … A group of scientists genetically engineered a type of bean plant so it was naturally resistant to insect pests. Upon impact, the ball made an impact sound. We could control club number (e.g. The relationship will be determined by altering the initial height of the ball prior to the release in order for the ball to bounce. Jay!Bingaman!&!Karen!Ostrowski!! ! The student identifies variables to be changed, measured and controlled (WS2, WS6, WS10). You can create a science fair project by identifying a variable, or something that changes, in this experiment. What variables will you need to control in order to test this hypothesis? = 0.187m. By performing the Ruler 4. Daniel Nelson on February 14, 2018 3 Comments ! The factor that will be investigated in this experiment would be the initial height of the ball. Control Variable: In this experiment there are many control variables that will be put in place to ensure our results are as accurate as possible. What variables will you need to control in order to test this hypothesis? 3. Results: The amount of borax affects the bounciness of a ball by helping to create cross-links. = 0.187m / 0.500m x 100%. In both cases, the ball is controlled to a fixed point corresponding to one of the stable 1-cycle periodic frequencies. your own Pins on Pinterest The temperature of a tennis ball greatly affects how high it bounces. All other parts of the experiment are measured against this standard. Science Fair Project: Pressure and a Bouncing Ball. Have each group set up a testing station and follow the directions on their ―Height of Rebound‖ work-sheet Bouncing Ball Experiment For Teachers 9th - 12th High schoolers bounce a ball from different heights and measure the height of the bounce. . You must also bounce it on a certain type of surface. Powered by Create your … 5. Repeat step 3. The electronic analog of the bouncing ball is developed as a simple classroom experiment illustrating all the important features of this nonlinear chaotic system. Introduction - year 10 srpexperient: hot & cold. The variables in your list should remain the same during an experiment, so that the only thing that affects the bounce height is the drop height. Discussing the variables involved in this experiment. The variable to be changed in the experiment is the drop height, therefore the drop height will be the independent variable investigated. The effect of changing the drop height will be measured by calculating the bounce efficiency of the tennis ball. Bouncing Ball Experiment . To measure the bounciness of a ball, you can try dropping it from a height onto a hard surface. This is due, in large part, to their construction. We kept the ball and the person measuring the bounce height the same to control for the effect that ball size could have on bounce height and to control for differences in ability to see small differences in height (visual acuity). This simple experiment will turn a regular egg or a hard-boiled egg into a bouncy ball. Writing down controlled variables is a good idea because it helps make your experiment reproducible, which is important in science! Then record the data from the stopwatch 9. • Let the ball drop. Make the measurements, plot the data and draw conclusions. Try changing the length or diameter of the straw. ... Bouncing ball Year 8 Science achievement standard The parts of the achievement standard targeted in the assessment task are highlighted. Conclusion - Bouncy Balls. . Physics & Physical Science Demos, Labs,. linearized high-bounce map. Additionally, the scientific equipment will be calibrated in order to check if it is working and producing accurate outcomes with correct measurements. CARDs for Experiment Set 1 & 2 *Interactive GraphiQ MAPS & Interactive Word WALL for Independent, Dependent & Controlled VARIABLES, APPLY IT! 4.Repeat the experiment with Person #2dropping their ball. The initial drop height is not relevant because the first bounce height is calculated by the time interval between the first impact and the second impact. Q. To be consistent, again measure to the bottom of the ball. The dependent variable is the _____. Recently, our class completed a bouncing-ball experiment. safety precautions (WS9, WS10). Controlled Variables Factors that are kept the same to avoid invalidating data. This variable stays the same throughout the whole experiment, Responds to the changing variable in an experiment, This is the changing variable in an experiment, This is a scientific procedure used to make a discovery A student is planning an experiment to find out how the height from which he drops a ball affects how high the ball bounces. Investigation report: Bouncing Ball Background theory The reason balls bounce is that, when they hit the floor, they are compressed slightly, then expand again, pushing against the floor. experiment. Apparatus: Bouncing ball physics is an interesting subject of analysis, demonstrating several interesting dynamics principles related to acceleration, momentum, and energy. Students must decide on the dependent and independent variables here. Bouncing Ball Kits - Educational Innovations, Inc. among other vendors ... Repeat the bounce experiment above to compare the store-bought bouncing balls. The relationship will be determined by altering the initial height of the ball prior to the release in order for the ball … In Graph 1, results for the experiment which investigated the effect of surface (data in categories) on bounce height of a tennis ball has been plotted as a bar graph. That ball bouncing is The controlled variables include using the same surface and the same ball. Place a raw egg carefully in a clear jar or cup. Bounce efficiency = Bounce height / drop height x 100%. Bouncing Ball Experiment. Controlled variables include, but are not limited to, the mass of the tennis ball and gravity. Average bounce height = (0.175m + 0.180m + 0.205m) / 3. Usually, a scientist starts out with the null hypothesis. Aspect 1 of the design criterion requires students to formulate a focused problem or research question and to identify independent and dependent variables, and relevant controlled variables. A well designed ... one student drops the ball, one student watches the bounce and estimates the height to which it bounces, one student measures the height of the bounce, and one student records the data. 7 iron, 2 wood etc. The effectiveness of these maps to represent the actual bouncing ball experimental system is compared. Scale or Balance 3. The experiment is also reliable because of the fact that even in the actual experiment the tennis ball was dropped on each surface 3 times, and an average height was found as well. Each day, check back on the egg. Try comparing a baseball to a golf ball or a tennis ball. Baseballs have less bounce than tennis balls or golf balls. Science begins with observations. YouTube.com:!South7thScience! And they are all fab! Then have Person #3 and Person #4 test their balls. We call this the standard of a controlled experiment. nature of science at work. www.markedbyteachers.com/gcse/science/bouncing-balls-experiment.html 2. The controlled variables in this experiment were: The 2 balls used were of the same size, material and thickness, each test was done in the same location so the ball was exposed to the same environmental factors and bounced on the same surface, the ball was dropped from the same height each time with no added force pushing it down, and the bounce height measurements were taken from the same place … Investigate the splash of water when a ball falls into a bucket of water. The major interest in the ball-bouncing system has been directed to the chaotic features of the model and their experimental replication @4#. Bouncing balls. A controlled experiment means we are changing one thing or one variable in an experiment. Control Variable: Would be the Height from which the balls … If the ball moved off the vertical while bouncing, then the data was rejected. Upon impact, the ball made an impact sound. Controlled Variables: Bouncy ball used, surface bounced off of, technique in which ball was dropped (initial height was measured from base of ball). Variables: Dependent Variable: The height of each ball after it is dropped from an equal height. 8. You have developed the following hypothesis: If the size of the ball I use affects how high the ball will bounce, then the larger the ball, the higher it will bounce. A variety of balls that could be grouped according to one or more of their properties, for example: The constants must be the mass of ball, bouncing surface, and number of bounces because they are going to be the same during the whole experiment. The question to answer is how the time of six bounces is related to the height of dropping it. I will look for a linear and proportional relationship between the independent and dependent variables. 4. Where the data for both variables is continuous (ie recorded on a measurement scale such as length in centimetres or mass in grams, it is possible to plot a line graph). My aim of this investigation is to find out the efficiency of a golf ball, netball, ping pong ball, rubber ball, tennis ball and a baseball on their first bounce from a 90cm high drop. Independent Variable: The temperature of one of the tennis balls is cooler compared to one that has not been changed in anyway Controlled Variable: - Same type of balls - Dropped from same height - Dropped in same environment - Dropped on same surface These variables are called fixed variables . Dependent Variable: The Bounce (How height is the ball going to Bounce) because of the difference in pressurization. A Bouncing Ball Experiment. Summary of task. You can also change how a ball bounces by changing its temperature. 2. Ball Bounce. Controlled variables consist of: A controlled environment will be used to conduct the experiment, ensuring no wind factor, humidity, and temperature factor. From dropping the ball we can see how high the ball will bounce to after having a loss or gain of energy due to sound or movement of the ball as it hits a hard surface. Demonstrating a floating ping pong ball is pretty cool, but it isn’t a science fair project. Controlled Variables– The puzzle (The puzzle needs to stay the same to create a fair test). Dover has kindly sponsored this post but all opinions are my own. Almost everybody, at some point in their lives, has bounced a rubber ball … Research: The aim of this experiment is to determine a factor that affects the height of a bouncing ball. You need to keep the controlled variables the same to ensure that your experiment is fair and also so that you can compare your results. The Variables that MUST be controlled throughout the experiment are: ; The height from spirit burner nozzle to the base of the water filled beaker ; Alarm drafts around the room must be kept to minimum so as to keep the heat on the base of the beaker a Keeping room temperature constant will enable the constant Temperature. These principles will be discussed. Students of all ages participate in science fairs; they also play with balls: basketballs, footballs, baseballs, soccer balls. The colder, the lower the ball bounces, and vice versa. There are usually multiple controlled variables. The hypothesis is If you put dry ice on different types of soaps, then the dry ice will produce different amount of bubbles. The Bounciest Ball Experiment Overview: In this lesson, students conduct a series of experiments with different balls to observe which bounce the highest and to see how they could make balls bounce higher. Then fill the glass with white vinegar until the egg is completely submerged. Bouncy Egg Science Experiment. A rubber ball, with a 4.9-cm diameter and 64-g mass, is dropped from a certain height h to bounce onto the floor, and the time between the first bounce and the nth bounce is measured. DIY Bouncy Balls is a project from the book Science Around the House: Simple Projects Using Household Recyclables by Roz Fulcher and published by Dover Publications. Find a partner. Overall my experiment answered my aim sufficiently because we determined out of 5 different types of balls (Tennis ball, hand ball, ping pong ball, spiky ball and wahu ball) which bounced the highest on a vinyl surface floor. Our investigation began with a question. For this experiment, 3 tennis ball will be placed in a freezer, 3 will be placed on a normal temperature room and 3 will be placed in the sun,each for 3 hours. The dependent variable is given but only in a vague way; the student must define what as splash is. Experimental Variables In order to determine the consecu tive heights I recorded the sound of the bouncing ball. A controlled variable was that the bouncing stays more or less along the vertical. Investigate some physical property of a bouncing ball. If the ball moves off the vertical while bouncing, then the data is rejected. Aug 22, 2014 - This an assessment testing students on the following: -identifiying variables (independent, dependent, and constant) -identifying hypothesis -identifying testable questions -explaining the importance of the scientific method There are four parts to the quiz: -matching -multiple choice -sorting … Bouncing Ball Lab Name _____ ... and any variables you must control for you experiment. The independent variable is the dropping height H because I choose it. These are all variables that can affect the outcome of the experiment so you have made these controlled (constant) variables. = 37.3%. Temperature of the ball How many times the ball bounces Height the ball is dropped from How many times the ball bounces Surface the ball collides with The height of the first bounce 4. Random errors are errors of measurements in which the measured quantities differ from the mean value with different magnitudes and directions. These are parts of the experiment that you try to keep constant throughout an experiment so that they won't interfere with your test. In experiment 2 of Siegler et al. Independent Variable - height

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