science fair project ideas with independent and dependent variables

Browse Science Projects | Education.com Plot a graph with the time in hours along the X-axis (the dependent variable) and the mass or weight of the gummy bear along the Y-axis (independent variable). Do different types of knots affect the breaking strength of a rope? 0000007529 00000 n Let it settle for a moment, this will take more time the higher the fat content. Water both plants the same measured amount and see which grows better. Examples of Independent and Dependent Variables. Color Explosion Magic Milk Experiment and Science Fair Project We use cookies and those of third party providers to deliver the best possible web experience and to compile statistics. The controlled variables in this experiment are the type of plant used and the amount of water received. The second experiment does not require any more data . One swing is called a period. Independent variable - the variable that is altered during a scientific experiment.. Planning an investigation (CCEA) - BBC Bitesize 0000003495 00000 n Observe the ants coming and goings and record your findings. What are Variables? Measure its mass with the balance. Plant a few large seeds, such as pumpkin seeds. Does heating water allow it to dissolve more sugar? Experiment #2: Compare the rate of voltage change between devices with low, medium, and high current drain. 9. When printing this document, you may NOT modify it in any way. 8th grade science fair projects tend to involve the scientific method and designing an experiment and not making models or explaining processes. Have you identified all relevant dependent variables, and are they all caused by and dependent on the independent variable? Easy 8th Grade Science Fair Projects - Science Struck What effect do additives have on the crystals? Draw conclusions about how heat effected the ants movements. 8th Grade Science Fair Project Ideas. This variable is affected by seed size and other independent variables in the experiment, such as water, light and soil composition. However, vinegar, which is actually an acid, can dissolve the candy. Do white candles burn at a different rate than colored candles? Project Idea: Independent vs. Dependent Variables Have you identified all relevant controlled variables? What Is an Independent vs. Dependent Variable in Research? Students get an amazing chance to win exciting prizes from these projects as well. The . ", "The work that a motor performs has a big impact on its speed, so to ensure a fair test, I must keep that variable the same.". water) then it will increase in mass and volume. Older students are invited to read more about that in our Sit and observe the subjects as they do ordinary tasks, such as writing, reading or talking, and count the number of times the subjects blink in one minute. Helmenstine, Anne Marie, Ph.D. (2021, February 16). How do differences in surfaces affect the adhesion of tape? %PDF-1.6 % Sometimes you may hear this variable called the "controlled variable" because it is the one that is changed. Can a saturated solution of sodium chloride still dissolve Epsom salts? Some people refer to controlled variables as "constant variables.". Try some easy projects that use three variables to understand the importance of each variable in an experiment. When sugar dissolves in water, you cannot see any sugar crystals floating in the water or settling on the bottom of the cup when you stop stirring; you'll use these visual indicators to compare how much has dissolved in each cup. ", "More stirring might also increase the amount of sugar that dissolves, and different sugars might dissolve in different amounts, so to ensure a fair test I want to keep these variables the same for each cup of water. 0000001169 00000 n ). Experimental Design for Advanced Science Projects page. light? Is a seed affected by its size? She has been a radio news journalist and announcer, movie reviewer for Family Movie Reviews Online, chiropractic assistant and medical writer. repeat the same experiment with a di erent variable and obtain the same results B. In regression analysis, the dependent variable is represented by "y", while the independent variables are represented by "x. Teacher location: The teacher is either in the room or not in the room. 3. ratio of solutions- Examples are: 1 part glue + 1 part borax; 2 parts glue + 1 part borax; etc. 6th Grade Science Fair Projects For any other use, please contact Science Buddies. Groups receiving the survey: Teenagers or parents, Amount of time that each person listens to music per day, measured in hours, Ask the question in exactly the same way to each individual. Which apps run down a cell phone battery the fastest. Does it matter what the liquid is (water as opposed to juice or um.. urine)? Voltage of the electricity, measured in volts, Speed of rotation, measured in revolutions per minute (RPMs), Height of candle, measured in centimeters, at regular intervals of time (for example, every 5 minutes). Did they appear to be slower when colder? 0000002075 00000 n Place some of the plants outdoors or in a well-lit window. Did they appear to move faster or slower when warmer? Weight or mass is an example of a variable that is very easy to measure. Wgu Capstone ExamplesThe first half requires you to work with a Design an investigation using eye color as an independent variable. 0000000704 00000 n Does Water or Vinegar Clean a Penny Better? What type of plastic wrap prevents evaporation the best? Cover the penny in one container with 1/8 cup of water, and the other with 1/8 cup of vinegar. Also, check if the taste and/or color of the bears have changed. trailer 1. Start seedlings, or purchase some that are already a few inches high. Locate an ant hill. Plant the same number of small seeds, such as tomatoes. 8th Grade Science/Section 2: Scientific Problem Solving - Wikibooks You might have a belief that someone is in love, but you cannot really be sure, and you would probably have friends that do not agree with you. 2. Why? Do bicycle fenders keep the rider dry when riding through a puddle? You could add food coloring, flavorings, or other 'impurities'. 1. Divide the time by five to get the average period for the first trial. How does the voltage of an AA battery change over time when used in low, medium, and high current drain devices? Is the effect the same at very low soap concentrations as compared with high concentrations? Volleyball Machine: 2019 Engineering Challenge. We use cookies and those of third party providers to deliver the best possible web experience and to compile statistics. There is no such thing as a "love-meter." The ingredients of gummy bears are sugar, water, and gelatin, with little water content. different colored light? 0000010199 00000 n Does air temperature affect how long soap bubbles last? Think of the independent variable as what you change in an experiment, the dependent variable as the response you observe because of what you changed, and the controlled variable as the things you keep the same so they dont interfere with your results. Who listens to music the most: Teenagers or their parents? Do different brands/types of markers produce the same results? When a gummy bear is placed in a hypotonic solution (e.g. "; then, during your feeding experiments you changed both the size of the dog and the time of day the dogs were fed. Temperature of the water measured in degrees Celsius, Amount of sugar that dissolves completely, measured in grams. Do different size seeds have different germination rates or percentages? Is a classroom noisier when the teacher leaves the room? Measure its mass with the balance. A sports medicine researcher has been hired by Gatorade to test the effects of its sports drink on athletic performance. 0000003002 00000 n You can find this page online at: https://www.sciencebuddies.org/science-fair-projects/science-fair/variables. Do all hairsprays hold equally well? Is the nutritional content of different brands of a vegetable (e.g., canned peas) the same? Prior to this, she wrote curriculum and business papers in four different languages. It's appropriate to cite references for any information that isn't common knowledge or that draws on the work of others. The controlled variables are stirring each container the same amount and using sugar from the same bag. Plant the same number of small seeds, such as tomatoes. Do the same observation each day for a couple of days more. QGT1 Business Management Capstone Financial Document Balance Sheet Forecast . Crystal Project: Variables - VanCleave's Science Fun Place a heat source -- like a space heater or a bright incandescent light bulb -- directed to warm the air outside the entrance of the ant hill. Does the power of a microwave affect how well it makes popcorn? The seed size is the independent variable, because nothing in the experiment affects the size of the seeds. Analyze the data to determine if one sex blinks more frequently than the other and which one blinks the most. So, love is not measurable in a scientific sense; therefore, it would be a poor variable to use in an experiment. The time for germination to take place and the height of the seedlings are dependent variables. Does fertilizer make a plant grow bigger? You can look at the percentage of seeds that germinate or the rate at which seeds germinate. Independent And Dependent Variables MathMathematics In mathematics, the The varying weights are the independent variable, while the number of swings, or periods, is the dependent variable. How effective are natural pest deterrents? Variables in Science: Independent, Dependent and Controlled! When you visit the site, Dotdash Meredith and its partners may store or retrieve information on your browser, mostly in the form of cookies. Me and my friend need to complete a project with dependent and independent variables please give ideas QUICK. Do different brands of popcorn leave different amounts of unpopped kernels? Science Fair Project Ideas for Kids, Middle & High School Students . Suzy has been a successful health, fitness and nutrition writer for more than 10 years, and has been published in various print and online publications. A variable is something that can change. The speed of the car, measured in distance traveled over a length of time, is the dependent variable. Scientific Methods [edit . Tie a weight to the end of a 3 1/2-foot string, leaving a 5-inch tail of string so you can add additional weights later in the experiment. The number of seeds that germinate is the dependent variable. Independent and Dependent Variables Examples - Science Notes and Projects You can make your own wind or water and evaluate the effects on soil. Variables in a Slime Experiment: 1. glue solution type of glue, concentration of the solution. Light is the independent variable, and the dependent variable is plant growth in this classroom experiment. Variables in Your Science Fair Project Variables Scientists use an experiment to search for cause and effect relationships in nature. The dependent variables are the things that the scientist focuses his or her observations on to see how they respond to the change made to the independent variable. Make similar observations as above for each one of them. 15 Independent and Dependent Variable Examples (2023) - Helpful Professor Controlled variables ensure that the different elements of an experiment are similar enough that you know what is being changed or tested. Gummy Bear Experiment - Science Project Ideas You can turn any science project into a science fair project by finding one factor you can change (the independent variable) and measuring its effect on another factor (the dependent variable). Scientists use the scientific method to design an experiment so that they can observe or measure if changes to one thing cause something else to vary in a repeatable way. Record the dimensions and mass of the bear again. Can you graft a tomato plant onto a potato plant? Fill two identical containers with two cups of water each -- one hot and one cold. Check out this amazing collection of free psychology science fair projects, psychology experiment ideas, and sociology project ideas for kids. If you have access to a very cold freezer, you can look at the effects of freeze and thaw cycles. "Different water pressure might also cause different amounts of water to flow and different faucets may behave differently, so to ensure a fair test, I want to keep the water pressure and the faucet the same for each faucet opening that I test. Science fair project ideas with independent and dependent variables Factors you can control include the type of seeds, length of storage, temperature of storage, and other. Procedure. Look at ethylene and enclosing a fruit in a sealed bag, temperature, light, or nearness to other pieces or fruit. Here is a sample containing the variables and hypothesis. What effect does soap in water have on plants? There are two parts of this hypothesis, and thus two experiments: Experiment #1: Measure the voltage of fresh AA batteries as they are used in different current drain devices. Do White Candles Burn Faster Than Colored Candles, Physical balance or digital weighing machine. Ideas for Controlled-Variable Science Projects. Strauch holds a Master of Arts in speech/broadcast journalism from Bob Jones University, where she also served on the faculty of the radio/TV department. She holds master's degrees in French literature and education. How does the pH of soil relate to the pH of the water around the soil? of days as the independent variable on a graph paper and the average plant height as the dependent variable. A cut and paste worksheet where they need to arrange the scientific method steps in the. Which soft drink sprays the most liquid after it is shaken? Suzy Kerr graduated from Grady School of Journalism and Mass Communications at the University of Georgia. Science Fair Project : Scientific Method - Hypothesis Fun Biology Projects Using Independent & Dependent Variables You should be able to use whatever you have in the fridge. This is what we are observing and measuring. However, it doesnt get dissolved as the gelatin is insoluble in water. 313 0 obj<>stream Air temperature is the independent variable and ant activity is the dependent variable in this ant hill experiment. PDF Variables in Your Science Fair Project - ohioumvsd.com Article was last reviewed on 21st November 2015. Does magnetism affect the growth of plants? music? And through your studies 0000002580 00000 n How permanent are permanent markers? It is called the "dependent" variable because we are trying to figure out whether its value depends on the value of the independent variable. NEED HELP WITH SCIENCE PROJECT!!!!!!!! Learn more about the chemical reaction process with this classic science experiment that only requires the use of sugar, yeast, a balloon, and an empty bottle. An independent variable is what you intentionally change in order to measure the effect of the dependent variable.To measure both of these, you must also have controlled variables: factors that remain consistent throughout every part of the experiment. 0 wind?)? Fill the dish with milk. The fertilizer added to trays C and D is the independent variable. Add a teaspoon of sugar to each and stir the mixture the same number of times in each container. The gummy bear experiment is a fun activity that teaches the basic concept of osmosis to the little ones in an easy manner. Statistics are defined as a field that involves tabulating, depicting, and describing. . We used a variety of milks in our science fair project below. What conditions affect the ripening of fruit? 0000007306 00000 n Typed reports and posters are the norm (sorry, no handwritten text). The ratios of water to sugar and the amount of stirring are both controlled variables in this experiment. To insure a fair test, a good 2. Do plants react to the presence of other plants? Also, a little more on Oxidation with this Rust Experiment! Fill the bowl with water. You should have 2 different graphs for the data pertaining to plants growing with and without music on the same graph paper for a good comparative study. In other words, they . On the other hand, its mass and volume decrease when placed in a hypertonic solution (e.g. 9 INDEPENDENT AND DEPENDENT VARIABLES ideas | variables, middle school The dependent variable is the amount of sugar that dissolves in each cup of water. Typed reports and posters are the norm (sorry, no handwritten text). Does the color of a crayon affect how long of a line it will write? Record the activity of the ants again. Independent Variable: Time (how long each battery operates in a given device), Independent variable: Type of current drain device (as quantified by low, medium, and high), Dependent variable: Voltage (same as experiment #1), Controlled variables: Same as outlined in the table for experiment #1. Independent/Dependent Variables Homeschool Science for Kids The company wants to claim that when an athlete drinks Gatorade, their performance will improve. Are night insects attracted to lamps because of heat or light? In this experiment, you'll determine the percentage of large and small seeds that germinate. How attentive have you been in class these past few weeks? Label the unfertilized seedling trays A and B and the fertilized seedling trays C and D. The controlled variables are: same kind of seed, same type of soil, same amount of water from the same source applied at the same frequency, same amount of exposure to the sun, same room temperature and same dew point. Put the other in an area that gets only indirect sunlight. Helpful in u. 5th grade. Experiments also have controlled variables. Time how long it takes to swing back and forth five times. In science, a variable is any factor, trait, or condition that can exist in differing amounts or types. Reproduction in whole or in part without permission is prohibited. Design an investigaton using eye color as a dependent variable. The length of the string and the angle of the swing are controlled variables. Science fair project ideas with independent and dependent variables Understanding the difference is something 9th graders are tested on in Texas, but more importantly it helps created a deeper understanding of linear relationships and more complicated functions. 0000001783 00000 n Does an electric motor turn faster if you increase the voltage? 295 0 obj <> endobj In our example, the independent variable is the SPF rating and the dependent variable is the level of UV radiation. 55 8th Grade Science Projects - Teaching Expertise 0000001658 00000 n Select subjects, half female and half male. %%EOF This experiment checks whether a particular kind of plant prefers direct or indirect sunlight. Psychology projects make for fun and . Note where each plant is when you measure it -- outside, inside in a well-lit window or away from direct sunlight -- and conclude which amount of sunlight helps your plants grow the fastest. The independent variable is the condition that you change in an experiment. How accurately do egg producers measure eggs? Can you make Jello using fresh pineapples instead. Remember that independent variables are on the horizontal and dependent variables on the vertical line of graphs. Can you change the independent variable during the experiment? How much can you dilute a pesticide while retaining its effectiveness? How to Test Algae Growth for a Science Fair Project, How to Tell the Difference Between Alcohol & Alkene in Labs, Quick & Easy Chemistry Experiments for 10th Graders, Science Experiments on the Formation of Crystals With Ammonia, The Best Ways to Make a Homemade Tornado for a Child's Science Project, Discovery Education: Investigation -- Design Experiment, ScienceProjectIdeasForKids.com: Variables: Independent, Dependent, Controlled, Science Experiments on Evaporation for Kids in Seventh Grade, Science Experiment With Rocks That Absorb Water, Science Experiments on Which Colors of Candles Burn the Fastest. This example project is designed to help students understand the concept of independent and dependent variables. Why just one? <<0F81BB1DD7DE6340B13214396CDE52FD>]>> Here are several examples of independent and dependent variables in experiments: In a study to determine whether how long a student sleeps affects test scores, the independent variable is the length of time spent sleeping while the dependent variable is the test score. A properly designed experiment usually has three kinds of variables: independent, dependent, and controlled. When conducting experiments, you need to properly note variables to make accurate conclusions. The subjects used in this experiment were under the color gel, and let the subjects grew. salt water). Blowing up a balloon with baking soda and vinegar is the classic acids and bases experiment. She completed her Master's degree in Nutrition Sciences, also at the University of Georgia. Science Fair Project Ideas for Kids, Middle & High School Students, Science Buddies: Variables in Your Science Fair Project. PDF a resource for teachers, students and parents - SCDHEC Understanding the definition and different types of variables is vital to properly conducting any science experiment. ", "The many variables above can each change how fast a plant grows, so to ensure a fair test of the fertilizer, each of them must be kept the same for every pot. Compare your results. What is the tallest tower you can build with 100 Legos? Scientists try to figure out how the natural world works.To do this they use experiments to search for cause and effect relationships. There are three types- an independent variable (sometimes called a manipulated variable), a dependent variable (sometimes referred to as the responding variable), and the controlled variable. 2. borax solution- source of borax, concentration of the solution. You want to know which brand of fertilizer is best for your plants. https://www.thoughtco.com/8th-grade-science-fair-projects-609030 (accessed March 4, 2023). You will change the temperature of the water, so this is the independent variable. In difficult or simple 8th grade science fair projects, the concentration is kept on including scientific methods and experiment designs. Plant seeds in identical seedling trays, using two trays of unfertilized soil and two seedling trays of fertilized soil, to see which soil helps the seeds germinate faster. The dependent variable is the reduction in the candle's length after 30 minutes. Water faucet opening (closed, half open, fully open), Amount of water flowing, measured in liters per minute. For example, what if our scientific question was: "How does the size of a dog affect how much food it eats? Science fair projects - Comparing the burning speed of scented and You may print and distribute up to 200 copies of this document annually, at no charge, for personal and classroom educational use. Observe which ball reaches the ground first. The independent and dependent variables are the two key variables in a science experiment. A function f may map x to some expression in x. The various surfaces on the ramp are the independent variables. What soils best support structures, such as buildings? There are two parts of this hypothesis, and thus two experiments: You can find this page online at: https://www.sciencebuddies.org/science-fair-projects/science-fair/sample-variables-hypothesis. A variable is something that can change or vary for an experiment to be a success. How does cold storage affect the germination of seeds? Scientists try to figure out how the natural world works.To do this they use experiments to search for cause and effect relationships. Chemistry Projects This is a fantastic bundle which includes everything you need to know about Understanding Dependent and Independent Variables across 15+ in-depth pages. An easy way to introduce this idea is . A Few More Apple Learning Ideas: A magnetic science activity to go along with the book 10 Apples Up on Top. You'll be expected to present data in the form of tables and graphs. endstream endobj 312 0 obj<>/Size 295/Type/XRef>>stream colorblind? For your science fair project, you should change one variable to see what affect it has on another variable. Cause and effect relationships explain why things happen and allow you to reliably predict the outcomes of an action. Small Physics Experiments Based on Buoyancy, Boat Flotation Experiments for 5th-Graders, Activities to Teach Science Process Skills to 2nd Grade, How to Test Algae Growth for a Science Fair Project, How to Measure How Much the Sun Shines on Solar Panels, Science Buddies: Variables in Your Science Fair Project, Education.com: 100 Project Ideas (page 2), JVC's Science Fair Projects: Variables: Independent, Dependent, Controlled, Ideas for Controlled-Variable Science Projects, Science Experiments on Which Colors of Candles Burn the Fastest, Science Experiment With Rocks That Absorb Water. All rights reserved. Planning an investigation Identify the variables. Follow the directions at the link to build one, or challenge eighth grade science students to experiment with their own construction methods. Does relative humidity? This science fair project teaches kids experimental design and how to test if subjects can really sense if they are being watched. D[P6KEBOVs.#}E?mys+(zMHPR.Ll+12*u2+_jFSW94(#VUx>2x+1hI3eP. With different kinds of plants, or inconsistent watering, how well each plant grew might not be a factor of sunlight alone. Completely immerse the gummy bear in the water. Mark the angle from which you will swing the pendulum, then release the weight. The relation between music and plant growth be studied better by plotting the no. An independent variable is what you intentionally change in order to measure the effect of the dependent variable.To measure both of these, you must also .