I am having trouble with Restate the problem in terms of the following:
Manipulated variable
Constant (control) variables
Principles of experimental design
State in correct form the hypothesis you intend to demonstrate.
I have conducted the experiment but I am not sure how to properly give there answers.
Without knowing what kind of experiment you did, how can we help you? Start with stating the kind of experment you did, how y ou did it, and the results.
Sra
the experiment was How do leaves change color?
I collected 2 large leaves from a maple and acorn tree. I chopped the leaves into very small pieces and put them into small jars labeled with the name or location of the tree.
I added rubbing alcohol to each jar to cover the leaves.
I covered the jars loosely with aluminum foil and place them into a tray containing 1 inch of hot tap water.
I waited an hour stiring each jar gently about every five minutes. I hand to kepp the water at a good temp. and replaced it twice when ti became to cold. I cut a long thin strip of coffee filter paper for each of the jars and label it.
I removed the jars from water and uncovered. I placed a strip of filter paper into each jar so that one end is in the alcohol. The colored alcohol traveled up the paper to reveal different shades of green, yellow, orange and red.
To provide you with assistance, let's break down each component and explain how to properly restate the problem in terms of manipulated and control variables, principles of experimental design, and formulating a hypothesis.
1. Restating the problem with manipulated and control variables:
- Manipulated variable: This is the variable that you intentionally change or manipulate in your experiment. It is the independent variable and will have different levels or values. For example, if your experiment involves testing how different amounts of fertilizer affect plant growth, the manipulated variable would be the amount of fertilizer (e.g., 0g, 5g, 10g).
- Constant (control) variables: These are the variables that you keep constant or unchanged throughout the experiment. They serve as a basis for comparison and help ensure that any observed effects are due to the manipulated variable and not other factors. In the fertilizer and plant growth experiment, some control variables could be the type of plant, lighting conditions, temperature, and watering frequency.
2. Principles of experimental design:
- Randomization: Randomly assigning participants or subjects to different levels of the manipulated variable helps control for individual differences and reduces bias.
- Replication: Conducting the experiment multiple times with different subjects or in different settings increases the reliability and validity of the results.
- Control group: Including a control group that does not receive the manipulated variable allows for comparison and helps determine if the variable has any effect.
3. Formulating a hypothesis:
- A hypothesis is a tentative explanation or prediction for the outcome of the experiment. It is typically stated as an "If...then..." statement, indicating the relationship between the manipulated and dependent variables. For example, in the fertilizer and plant growth experiment, a hypothesis could be: "If plants are exposed to higher levels of fertilizer, then their growth rate will increase."
It is important to note that you have mentioned you have conducted the experiment already. In that case, you would need to provide the results and analyze them to determine if your hypothesis was supported or contradicted by the data.
To properly give your answers, ensure that you clearly state the manipulated and control variables, follow the principles of experimental design, and present your hypothesis in the correct form. Additionally, accurately present your findings and analyze the results to draw appropriate conclusions.