What is wrong with this protocol for an experiment that asks “Does adding 1 teaspoon of salt to cut flowers each day keep them fresh longer?
Added by Michelle F.
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The protocol should include a control group of cut flowers that do not receive any salt, to compare the effects of adding salt. Show more…
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Vodka, Aspirin or 7Up: What Keeps Flowers Fresh? For this assignment, you will attach your one-page assignment to an email through Canvas for review by your lab instructor. If needed, you can consult your lecture textbook and/or your laboratory textbook to solidify your understanding of the terms independent variable, dependent variable, control, and hypothesis. Be sure to include the following information in your one-page uploaded document: 1. Generate a hypothesis. What treatment option do you think would best preserve cut flowers? Why? • "I hypothesize that __________ would result in cut flowers being kept fresh because __________." 2. State the independent variables: what types of treatments are you going to test? 3. State the dependent variables: how will you accurately measure whether or not your treatment successfully kept the cut flowers fresh? 4. What type of control do you need to include in your experimental design to demonstrate whether or not your treatment was effective? 5. How many cut flower samples should you test to be confident in your results and why? 6. Based on your experimental set-up, what results would support your hypothesis? What results would falsify your hypothesis?
Josee P.
Generate a hypothesis: What treatment option do you think would best preserve cut flowers? Why? Hypothesize that a specific treatment would result in cut flowers being kept fresh. 2. State the independent variables: What types of treatments are you going to test? 3. State the dependent variables: How will you accurately measure whether or not your treatment successfully kept the cut flowers fresh? 4. What type of control do you need to include in your experimental design to demonstrate whether or not your treatment was effective? 5. How many cut flower samples should you test to be confident in your results and why? 6. Based on your experimental setup, what results would support your hypothesis? What results would falsify your hypothesis?
Katlin K.
Sample Experiment: A student received a dozen roses for her birthday and she wanted them to last as long as possible. Someone told her that putting an aspirin in the water would help the flowers look fresh longer. She decided to set up an experiment. She put six of the roses in plain water and six of the roses in water with one aspirin. Each day she noted the color of the flowers, the number of petals that had fallen and the angle of droop on the stems. After eight days, the flowers in the plain water had no petals left and appeared to be dead. The flowers in the aspirin water still had most of their petals. What is the independent variable? What is the dependent variable?
Kaela P.
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