Experimental Design Practice Peat Moss Scenario (HURRY)

Norm wanted to know if adding peat moss to sand would affect its ability to hold water. He put 200 mL of pure sand into container A. He put a mixture of 80% sand and 20% peat moss into container B. He put a mixture of 60% sand and 40% peat moss into container C. He put a mixture of 40% sand and 60% peat moss into container D. He added water to each container and measured the amount of water the contents would absorb. He dried the sand and peat moss and repeated the experiment 5 times. He collected the following data

(attached the table)

For each of the above scenarios, answer the following questions:

1. What is the Independent and Dependent variable for each scenario?

The dependent variable is the variable that measured / tested in an experiment. For example, in a study how tutoring impacts test scores, the dependent variable is the participants' test scores, because that is what is being measured. Whereas an independent variable is a variable that stands alone and isn't changed by the other variables that we are trying to measure. For example, someone's age might be an independent variable. Therefore the Independent variable and Dependent variable for each scenario is water and drying and container (the Independent variable), also pure sand, peat moss (Dependent variable)

2. What variables were held Constant for each scenario?

water and drying and container

3. What is the Control group for each scenario?

dried and repeated the experiment 5 times, amount of pure sand and peat moss

4. Write a hypothesis for each scenario.

He put 200 mL of pure sand into container A. => not adding peat moss to sand not would affect its ability to hold water. (containers are not heavy to move)

He put a mixture of 80% sand and 20% peat moss into container B. => adding peat moss to sand would affect its ability to hold water (containers too heavy to move)

He put a mixture of 60% sand and 40% peat moss into container C. => adding peat moss to sand would affect its ability to hold water. (containers little heavy to move)

He put a mixture of 40% sand and 60% peat moss into container D. => adding peat moss to sand would affect its ability to hold water. (containers less heavy to move)

Learn more about Experimental brainly.com/question/5249450

#LearnWithBrainly