Question

1. a student tested to see if adding fertilizer would help her tomato plants produce more tomatoes. she added fertilizer to one row of tomatoes, and did not add fertilizer to the other row. the fertilized row grew twice the number of tomatoes! a. what is the independent variable for this experiment? ____________ b. what is the dependent variable for this experiment? __________ c. why did she only add fertilizer to one row? __________ d. what do you think her hypothesis is? ____________

Explanation:

a. The independent variable is what the experimenter changes. Here, it's the addition of fertilizer.
b. The dependent variable is what is measured and affected by the independent variable, which is the number of tomatoes produced.
c. She added fertilizer to only one row to create a control group (the non - fertilized row) for comparison to see if the fertilizer has an effect.
d. Her hypothesis is likely that adding fertilizer to tomato plants will increase the number of tomatoes they produce.

Answer:

a. Addition of fertilizer
b. Number of tomatoes produced
c. To create a control group for comparison
d. Adding fertilizer to tomato plants will increase the number of tomatoes they produce