Question

changing the independent variable causes change in the dependent variable the dependent variable depends on the independent variable. - x is always the independent variable. input - y is always the dependent variable. y is the output what you get out depends on what you put in 1. the amount of fertilizer used on a field can affect the number of moles found in the soil. write a hypothesis independent variable: _____________________ dependent variable ___________________ list 3 constants 2. the type of colors used in a fish tank can affect the activity level of the goldfish. write a hypothesis independent variable ___________________ dependent variable _____________________ list 3 constants

Explanation:

For each scenario, identify the independent variable (the changed factor), dependent variable (the measured outcome), write a testable hypothesis, and list constants (factors kept the same).

Answer:

1. Hypothesis: Increasing the amount of fertilizer used on a field will increase the number of moles found in the soil.

• Independent variable: Amount of fertilizer used
• Dependent variable: Number of moles in the soil
• 3 constants: Size of the field, type of soil, local climate/weather conditions

1. Hypothesis: Changing the type of colors in a fish tank will alter the activity level of the goldfish.

• Independent variable: Type of colors in the fish tank
• Dependent variable: Activity level of the goldfish
• 3 constants: Size of the fish tank, amount of food given, water temperature