what is the independent variable for the tadpole diet experiment? what is the independent variable for the tadpole diet experiment?

Researchers often manipulate or measure independent and dependent variables in studies to test cause-and-effect relationships. Yep! Direct link to Ivana - Science trainee's post There are no official rul, Posted 5 years ago. In icare graduate program. In your experiment you keep all other factors, such as tadpole density per pan, temperature, pH, and the amount of food the same. By clicking Accept All Cookies, you agree to the storing of cookies on your device to enhance site navigation, analyze site usage, and assist in our marketing efforts. As the experimenter changes the independent variable, the change in the dependent variable is observed and recorded. Our new student and parent forum, at ExpertHub.PrepScholar.com, allow you to interact with your peers and the PrepScholar staff. In your experiment you keep all other factors, such as tadpole density per pan, temperature, pH, and the amount of food the same. In order to be of scientific value, it is important that a hypothesis should be ___. It looks like the "seeds need water" hypothesis is probably correct! In order to make smart decisions at work, we need data. A Refresher on Randomized Controlled Experiments. To better understand what a randomized controlled experiment is and how businesses use them, I talked with Tom Redman, author ofData Driven: Profiting from Your Most Important Business Asset. An independent variable is the variable that is changed in a scientific experiment. Controlled experiments (article) | Khan Academy which factor will you vary in order to test the hypothesis? When graphing data for an experiment, the independent variable is plotted on the x-axis, while the dependent variable is recorded on the y-axis. You want to see if the meat-based diet will be associated with an increase in the average weight of the tadpoles. What are the key ingredients of a controlled experiment? What is the independent variable for the tadpole diet experiment ? what is the independent variable for the tadpole diet experiment? ***Drop different balls from a fixed height. An independent variable is defines as the variable that is changed or controlled in a scientific experiment. Direct link to madhoolika.chodavarapu's post Plants are PHOTOTROPIC I., Posted 3 years ago. Independent Variable Definition and Examples. ", Points on a straight line through (0,0) progressing upward and to the right. This cookie is set by GDPR Cookie Consent plugin. You want to see if the meat-based diet will be associated with an increase in the average weight of the tadpoles. Experiments are usually designed to find out what effect one variable has on another - in our example, the effect of salt addition on plant growth.. You manipulate the independent variable (the one you think might be the cause) and then measure the dependent variable (the one you think might be the effect) to find out what this . Suppose I decide to grow bean sprouts in my kitchen, near the window. When determining the scope of an experiment, you need to consider (check all that apply), What results to report THEN ANSWER THE PRE-LAB QUESTIONS USING INFORMATION IN THIS BOOK. Direct link to Joann's post if you planted different , Posted 4 years ago. Scientists are the only individuals who use the scientific method. How exactly do you isolate the factors that youre trying to study? This broader question could not be answered experimentally, as it wouldn't be ethical (or even possible) to artificially change the water temperature surrounding entire coral reefs. Would legitimate studies only research this from children that are enrolled in such a study at birth with doctors/scientists/researchers taking blood samples or personally investigating the home environment for these factors? Scenario 4: You regularly babysit your little cousin who always throws a tantrum when he's asked to eat his vegetables. A lot of research on the cause of bleaching has focused on water temperature. When a coral is bleaching, it expels symbiotic algae (zooxanthellae), which supply food for the coral, get rid of metabolic byproducts, protect it from pathogens and also create its bright colors. Hypothesis - create a strategy formulate a hypothesis Woodfrog tadpoles grow larger if fed a meat-based diet. One diet is a meat-based fish food, and the other is the traditional diet of boiled lettuce. You'll get a detailed solution from a subject matter expert that helps you learn core concepts. If you purchase an item through one of our links, PrepScholar may receive a commission. Direct link to Ivana - Science trainee's post Yes, but the hypothesis h, Posted 5 years ago. There are two groups in the experiment, and they are identical except that one receives a treatment (water) while the other does not. Question 3 Imagine that you wish to compare two different diets that will be fed to tadpoles raised in a lab. Number of bacteria c. generation Reproduction rate d. You want to determine if the new diet will increase the average weight of the tadpoles. The dependent variable is the variable that is being measured or tested in an experiment. The dependent variable (height) depends on the independent variable (age). 3. Below are overviews of three experiments, each with their independent and dependent variables identified. That seed may have been dead, unhealthy, or just slow to sprout. For example, if we want to explore whether high concentrations of vehicle exhaust impact incidence of asthma in children, vehicle . How do you measure an independent variable? Reliable Hitachi Vantara storage systems are the backbone of many innovative companies over the world for whom data availability is crucial. Sometimes you may hear this variable called the "controlled variable" because it is the one that is changed. I will go into detail about the research topic upon contact. which science classes high school students should be taking. For example, this program would generally predict bleaching for a particular reef when the water temperature in the reef's area exceeded its average monthly maximum by, The computer program was able to predict many bleaching events weeks or even months before they were reported, including a large bleaching event in the Great Barrier Reef in 1998, Posted 6 years ago. Use letters to represent variables in word problems. Acrylic Shapes Wholesale, container_memory_working_set_bytes vs container_memory_usage_bytes, Louisiana State Penitentiary Famous Inmates, johnson funeral home anderson sc obituaries. Difference Between Independent and Dependent Variables, Dependent Variable Definition and Examples. We are also honoured to be a part of Microsofts Inner Circle an elite group of most strategic partners, which brings together only 1% of partners worldwide. Answer. 4 How do you measure an independent variable? In that case, a scientist may test a hypothesis by making predictions about patterns that should be seen in nature if the hypothesis is correct. There are different ways to title a graph, but a common way is "[Independent Variable] vs. [Dependent Variable]" like this graph. Randomization (along with a larger sample size) makes you feel more confident that any result you get is actually caused by the independent variable of interest in the pharma case, the effect of the drug and therefore is generalizable beyond the experiment, according to Redman. 29, 2021, thoughtco.com/definition-of-independent-variable-605238. Imagine that you wish to compare two different diets that will be fed to tadpoles raised in a lab. One of the more structured experiments is the randomized controlled experiment. The independent variable is the one the experimenter controls. The new diet is a meat-based food. You want to see if the meat-based diet will be associated with an increase in the average weight of the tadpoles. Want to improve your SAT score by 160 points or your ACT score by 4 points? A/An ___________ should be based on background knowledge and observations. The independent variable remains the independent variable throughout the experiment. Experiment 2: You want to see which type of fertilizer helps plants grow fastest, so you add a different brand of fertilizer to each plant and see how tall they grow. Math Glossary: Mathematics Terms and Definitions, The Difference Between Control Group and Experimental Group, independent variable and the dependent variable, Ph.D., Biomedical Sciences, University of Tennessee at Knoxville, B.A., Physics and Mathematics, Hastings College. With your pairs of wells above, youd randomly pick, maybe even by tossing a coin, which gets the new drill in each pair. draw graphs, evaluate results, and evaluate the hypothesis. Make a strategy for testing the hypothesis - We will brake at various speeds but keep the car and other factors constant. So, the number of hours of sleep is the independent variable. What you find in a laboratory experiment may not always hold up in the field. The dependent variable is the variable that is being measured or tested in an experiment. Biology. What is the independent variable? Performance cookies are used to understand and analyze the key performance indexes of the website which helps in delivering a better user experience for the visitors. The cookie is set by GDPR cookie consent to record the user consent for the cookies in the category "Functional". The Hypothesis is; "The braking distance grows linearly with speed" What is commonly graphed on the x axis of the graph? False. The independent variable (IV) is the characteristic of a psychology experiment that is manipulated or changed by researchers, not by other variables in the experiment. when the coral reefs are bleached does that mean they have died, if not do they stay white forever or return to their original form? Check out our complete guide to winning Science Olympiad competitions. Create a graph with x and. We've written a guide for each test about the top 5 strategies you must be using to have a shot at improving your score. Answers: 1 on a question: Identify the independent and the dependent variable case 1:to determine whether a diet of blueberries has an effect on aging, an experiment involving 19-month old rats was undertaken. Thus, eating carrots is the independent variable. There is a spectrum of experiments that managers can do from quick, informal ones, to pilot studies, to field experiments, and to lab research. PDF U R S Y T E S T S . C O M This is where the rubber hits the road, of course. How do you determine independent and dependent variables? What question can you ask yourself to determine the independent variable? Although it wouldn't be the most accurate, if having someone to check if children are exposed to X or if Y is happening is not possible due to financial, privacy, etc. That's a great way o, Posted 4 years ago. What is the independent variable for the tadpole diet experiment? So lets put it all together. experimental and control. Choose a scope - We will focus on how braking distance depends on speed.3. When graphing these variables, the independent variable should go on the x-axis (the horizontal axis), and the dependent variable goes on the y-axis (vertical axis). An example of a dependent variable is how tall you are at different ages. Once you have a protocol, Redman suggests you do a small-scale experiment to test out whether the process youve laid out will work. Its value is independent of other variables in your study. 1 For example, in a study looking at how tutoring impacts test scores, the dependent variable would be the participants' test scores since that is what is being measured. Changes to each of these independent variables cause the dependent variables to change in the experiments. Analysis - draw graphs, evaluate the hypothesis. (2006-42) A scientist designed an experiment to test the effect of temperature on bacterial growth. The three most common cementing agents in sedimentary rocks are? The only difference between your control and experimental groups is the type of food the tadpoles . B. Tadpole size will be unpredictable if fed a meat-based diet. This chapter provides an integrative review of the diversity of Cuba's amphibians, main historical contributions, red lists, taxonomic comments considered relevant, threats, distribution . The independent variable (IV) in psychology is the characteristic of an experiment that is manipulated or changed by researchers, not by other variables in the experiment. Retrieved from https://www.thoughtco.com/definition-of-independent-variable-605238. in the results obtained how does the subtraction of the control affect the results and why. You control for this by putting all of the patients on the same diet for the duration of the experiment. What would be natural to do in the experiment phase if your hypothesis is: " The breaking distance grows linearly with speed"? They probably do not eat tadpoles in large quantities, although they might eat frog eggs and an occasional tadpole. You test different brands of popcorn to see which bag pops the most popcorn kernels. Formulating a hypothesis is the one and only thing that distinguishes a scientist from an astrologist. You should use the graph generated from your data to see if your hypothesis is supported. How are you going to set up randomization? Similarly, in a clinical trial, there are a lot of other factors, such as patients age, general health, exercise regimens, and blood pressure, that can make it hard to see whether the results of the experiment can really be attributed to the drug as opposed to some other factor. Scientific Method Lab Ho.. Help Save & Exit Submit 19 Pillbug number 0.02 points In the pillbug experiment, how many pillbugs did you need to use to get good information for the experiment? \begin{matrix} \text{ } & \text{Nitrogenous Bases (\\%)}\\ \text{Organism} & \text{A} & \text{G} & \text{T} & \text{C}\\ \text{Human} & \text{ } & \text{19.9} & \text{29.4} & \text{ }\\ \text{Chicken} & \text{28.8} & \text{ } & \text{ } & \text{12.5}\\ \text{Bacterium (S lutea)} & \text{13.4} & \text{ } & \text{ } & \text{ }\\ \end{matrix} Skopped Multiple Choice Print 100 References 5 10 In the _________ phase, you will carry out the strategy you developed for testing the hypothesis. What are Independent and Dependent Variables? - Simply Psychology The cookie is used to store the user consent for the cookies in the category "Performance". From the graph, it looks like studying up to six hours helped her raise her score, but as she studied more than that her score dropped slightly. -Tadpole size will be more variable if fed a meat-based diet. Removal of control would affect results. **Carry out the strategy chosen in the hypothesis phase. Differentiate between the following terms. When people hear the term, they most often think of clinical trials, where one group is given a treatment and another a placebo, but pharmaceutical companies and medical scientists arent the only ones using these types of experiments.