what is the independent variable for the tadpole diet experiment?

Biology questions and answers. Helmenstine, Anne Marie, Ph.D. "Independent Variable Definition and Examples." It represents the cause or reason for an outcome. The cookie is set by GDPR cookie consent to record the user consent for the cookies in the category "Functional". Section: Experimentation and Data Analysis: Yeast Nutrition Topic: A View of Life; Scientific Method Learning Objective: 01.04. Both contain ten bean seeds planted in the same type of soil, and both are placed in the same window. *****Place the dependent variable on the Y-axis******* These variables are expected to change as a result of an experimental manipulation of the independent variable or variables. Independent and dependent variables are commonly taught in high school science classes. The only difference between your control and experimental groups is the type of food the tadpoles receive What is the independent variable for the tadpole diet experiment? Check out our guides on the best study tips for the SAT and ACT. This cookie is set by GDPR Cookie Consent plugin. 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. Direct link to Companion1's post when the coral reefs are , Posted 6 years ago. What would be natural to do in the experiment phase if the hypothesis is: " The heavier the ball, the faster it falls"? What do you do in the LabSmart experiment phase? Scientific Method and Metric System lab charlie smith.docx In the tadpole diet experiment, it would be sufficient to test only one single pan of tadpoles that were fed lettuce, and only one single pan of tadpoles fed meat. Direct link to Ivana - Science trainee's post There are no official rul, Posted 5 years ago. There are different ways to title a graph, but a common way is "[Independent Variable] vs. [Dependent Variable]" like this graph. With an experiment like the drill bit one, you may skip the pilot because of the cost and time involved in drilling a well. What is the independent variable for the tadpole diet experiment? - Tadpole size - Lab conditions - Species of tadpole - Diet. Identifying control variables, independent and dependent variables is important in making experiments fair. Imagine that you want to compare a new diet for tadpoles that are reared in the laboratory to the traditional laboratory diet of boiled lettuce. The dependent variable is the effect. There is a spectrum of experiments that managers can do from quick, informal ones, to pilot studies, to field experiments, and to lab research. Instead, it's a "best guess," and the scientist must test it to see if it's actually correct. Yes, but the hypothesis has to be backed up by your experiment, and predicted outcome. In the _________ phase, you will carry out the strategy you developed for testing the hypothesis. Thus, the only possible instruments are . Green frog tadpoles grow larger if kept in water above 18C. Think through all of the factors that could spoil your experiment for example, if the drill bits are attached to different types of machines or are used in particular types of wells. what is the independent variable for the tadpole diet experiment? a. So, the number of hours of sleep is the independent variable. No 3. One of the more structured experiments is the randomized controlled experiment. Question 3 Imagine that you wish to compare two different diets that will be fed to tadpoles raised in a lab. Independent Variable . False-colored map representing sea surface temperatures around the globe as different colors. Here is an example of an experiment: Researchers examined the effect of pesticides on tadpole limb development. Imagine that you wish to compare two different diets that will be fed to tadpoles raised in a lab. 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. An independent variable is defines as the variable that is changed or controlled in a scientific experiment. A lot of researches are done through surveys. So you have to decide how much controlling is worth the cost. Suppose I decide to grow bean sprouts in my kitchen, near the window. We carry out innovative IT solutions paying attention to quality, efficiency and sustainability. The independent variable is the one the experimenter controls. This term can be confusing because statisticians use it to describe more than one concept. We include controls (positive and/or negative) in order to have something to coampare to and make conclusion). Independent and dependent variables always go on the same places in a graph. The independent variable (sometimes known as the manipulated variable) is the variable whose change isn't affected by any other variable in the experiment. Suppose you have the speed on the x axis and braking distance on the y axis, which graph would confirm the hypothesis "Braking distance is proportional to speed? When determining the scope of an experiment, you need to consider (check all that apply), What results to report diet. Its value depends on changes in the independent variable. Write an alternate hypothesis for this experiment: Based on the null hypothesis, I hypothesize that there will in fact be either an increase or decrease in the tadpoles weight base on their diets in a controlled experiment. As the experimenter changes the independent variable, the change in the dependent variable is observed and recorded. All rights reserved. For example, say you have ten sunflower seedlings, and you decide to give each a different amount of water each day to see if that affects their growth. The pots are placed near the window. When scientists design experiments, they determine what will be their independent, dependent, and constant variables. Scenario 2: Your friends invite you to a party, and you decide to attend, but you're worried that staying out too long will affect how well you do on your geometry test tomorrow morning. diet tadpole size species of tadpole lab . Or if the researcher only relies on the parents' reporting data from birth to the current age that the child is involved in testing a hypothesis? We use cookies on our website to give you the most relevant experience by remembering your preferences and repeat visits. Skopped Multiple Choice Print 100 References 5 10 Identify independent variable Imagine that you wish to compare two different diets that will be fed to tadpoles raised in a lab. Independent and Dependent Variables: Which Is Which? Earn badges to share on LinkedIn and your resume. When utilizing the scientific method, there are two types of variables. In your experiment you keep all other factors , such as tadpole density per pan , temperature , pH , and the amount of food the same . 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. Below are overviews of three experiments, each with their independent and dependent variables identified. The first is to write the hypothesis and see if it makes sense: Only one of these statements makes sense. Dr. Helmenstine holds a Ph.D. in biomedical sciences and is a science writer, educator, and consultant. experimental and control. This is mainly because the value plotted on the y-axis, always corresponds to the x-axis. In contrast, the dependent variable in an experiment is the response that's measured to see if the treatment had an effect. The new diet is a meat-based commercial fish food. Which statement regarding the scientific method is false? Diet. The dependent variable may or may not change in response to the independent variable. In analytical health research there are generally two types of variables. For example, in Experiment 2 above, some of the constant variables would be the type of plant being grown, the amount of fertilizer each plant is given, the amount of water each plant is given, when each plant is given fertilizer and water, the amount of sunlight the plants receive, the size of the container each plant is grown in, and more. Bio 111 1-2 Flashcards | Quizlet Two examples of common independent variables are age and time. Identify independent variable Imagine that you wish to compare two different diets that will be fed to tadpoles raised. To identify the dependent variable ask yourself, What is actually being measured in the experiment? For example, to test a hypothesis that eating carrots improves vision, the experimenter would manipulate whether or not subjects ate carrots. 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? Record the braking distance at different speeds Accelerate the car to different speeds in multiple trials Measure the distance covered while braking. Christine graduated from Michigan State University with degrees in Environmental Biology and Geography and received her Master's from Duke University. Either the scientist has to change the independent variable herself or it changes on its own; nothing else in the experiment affects or changes it. Researchers often manipulate or measure independent and dependent variables in studies to test cause-and-effect relationships. A) Diet B) Size of tadpoles C) Tadpole species D) Lab conditions Answer: B Explanation: The dependent variable is what will be measured. Get Free Guides to Boost Your SAT/ACT Score. A researcher can control the number of hours a student sleeps. For a manager to say, Im not sure I know, lets do an experiment, requires a certain amount of sophistication and understanding of how to run these things. But without experiments, you cant really be sure that your hunches are right. Scientific experimentation can occur anywhere, depending upon the problem being examined. Similarly, in the drilling experiment, you might want to be sure you account for the expected hardness of the rock, so you may create 15pairs of wells based on how difficult you expect theyll be to drill. What is the independent variable for an experiment comparing different tadpole diets? You also have the option to opt-out of these cookies. This cookie is set by GDPR Cookie Consent plugin. He grew three different cultures of the bacterium E. coli under three heat lamps at different temperatures. 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. The only difference between your control and experimental groups is the type of food the tadpoles receive Which is a good hypothesis for this tadpole experiment? Panel 3: In the experimental (watered) pot, 9/10 seed sprout. It's common to put the units in parentheses next to the axis titles, which this graph does. Then, they can collect data to see if the pattern is actually there. Necessary cookies are absolutely essential for the website to function properly. One diet is a meatbased fish food, and the other is the traditional diet of boiled lettuce. Independent variables are the variables that the experimenter changes to test their dependent variable. It brings people back to those dopey science classes they didnt like, but that doesnt make the steps any less critical. PDF 5. (2006- BIO SOL Review 2 - Experiments (23) - SolPass Can you lift more with a fixed or movable pulley? The tadpoles weight will neither increase nor decrease based on the type of food they receive . Solved Help Save & Exit Submit 25 Imagine that you wish to - Chegg Carry out the strategy chosen in the hypothesis phase Collect measurements in the notebook. Its value depends on changes in the independent variable. View Tadpole Experiment.docx from BIOL 101 at West Virginia University. What would be natural to do in the experiment phase if your hypothesis is: "The braking distance grows linearly with speed"? Tadpoles will be larger if the pH is higher. The dependent variable is the variable being tested and measured in an experiment, and is 'dependent' on the independent variable. Independent variables are the variables that the experimenter changes to test their dependent variable. Report - document your results; compose a report. The variable that responds to the change in the independent variable is called the dependent variable. Drop different balls from a fixed height Measure the weight and the falling times of different balls. Direct link to tyersome's post Nope, you can have multip. $$ You want to see if the meat-based diet will be associated with an increase in the average weight of the tadpoles. **it must be open to revision in the light of new date. How to determine an independent variable? What is the independent variable for the tadpole diet experiment? 10 bean seeds are added to each pot. PDF U R S Y T E S T S . C O M You'll get a detailed solution from a subject matter expert that helps you learn core concepts. Here control means the current way of doing things (e.g., the old bit) and treatment means the new way of doing things (e.g., the new bit).

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