Get 60 seeds of same species of tomato; Plant seeds in part of yard where they have same type of soil and get the same amount of sunlight; Apply fertilizer once a week to half of the plants; After tomatoes have ripened, take the mass of each tomato and record if it were in the experimental … However there was a sub experiment added during week six, if a previously fertilized plant is only watered and cut off from its fertilizer then it will grow at a faster rate than it would have with said fertilizer.The materials used consisted of tomato seeds, soil, four pots (two for the seedlings and two for the full grown tomato plants), water, sun light, carbon dioxide, homemade fungicide (one part milk nine parts water), and two fertilizers, one being one part urine and eight parts water and the other being a gallon of water with three tablespoons of molasses added. This educated guess is about the relationship between the independent and dependent variables. ).Have the students think about the Seed Investigation and brainstorm variables that may not be controllable (e.g., giving plants different amounts of water, some plants being closer to a heat vent than others, using different types of soil, etc. Using other plant types and depending on the growing period until harvest the plant density can be higher. This worksheet can also be used as an assessment to determine understanding about the scientific method.The change in their mass is measured after a day. The people who received the mint without the secret ingredient (Group B) would be the control group.

Scientific Method - Manipulated and Responding Variables Page 1 of1 Name: Date:_ Scientific Method - Manipulated and Responding Variables Jordan is doing a science fair project on the effects of music on the growth of tomatoes. Therefore my hypothesis was incorrect; the fertilizer lessened the growth of the plants rather than increased it. Scientific Method - Manipulated and Responding Variables... Give each group a scenario and ask them to design an experiment!

The worksheet is made very simple, to be practice just about those variables and not other aspects of the scientific method.Bart Simpson Controls And Variables With Answers 1. All other factors were the same for all plants. At the end of each week, the height of each plant was measured.

Variable - Any part of an experiment that can vary. These could have been solved if the water and fertilizer were precisely measured, if the plants were placed directly in the sun, and if the plants were taken care of everyday, however seeing as how the experiment was somewhat of a success the plants were sufficiently care for leaving little room for error. Independent Variable - The part of the experiment that is manipulated or changed by the scientists or person performing the experiment.Scientific Method - Controls and Variables Part 2 Answer Key Important Definitions to know: Control - A part of the experiment that is not being tested and is used for comparison. Plant A is exposed to classical music using headphones attached to the soil. The only errors that could have been made during this experiment were under watering or overwatering, adding the wrong amount of fertilizer, light exposure, and of course neglecting the plants. Plant A is exposed to classical music using headphones attached to the soil. Create your own unique website with customizable templates. 7) What is the responding variable in this experiment?

The independent variable for this experiment was the type of fertilizer with the dependent variable being the tomatoes growth in height. In order to do so, scientists aim to make one change (the cause or An experimental inquiry typically has three main types of variables: an independent variable, a dependent variable and controlled variables. If you work hard to understand the problems and think deeply like a 4th grader, you will have no problem with this!Scientific Method - Controls and Variables ANSWER KEY Write a definition for each: Control - A part of the experiment that is not being tested and is used for comparison. The independent variable (the liquid) is intentionally manipulated or changed during the experiment.

When indeterminate tomato are grown in long-term experiments, no more than 3.5 plants per m 2 can be grown, at lower light levels this density decreases (see Air Temperature and Radiation). In the example above, if some of the plants were sitting closer to the window than others, the differential exposure to light could be affecting the number of days to flowering, rather than the volume of water.In the Seed Investigation, students investigate the germination rates of tomato seeds that have been to space (or exposed to space-like conditions) with seeds that have remained on Earth.Have students read the following questions and determine the independent, dependent and potential controlled variables.In their own words, have student define the terms “Independent variable,” “Dependent variable,” and “Controlled variable.”Have the students brainstorm the variables that should be controlled in the Seed Investigation (e.g., quantity of water, type of soil, type of planting container, temperature, etc.