Question

1. two plants are grown using the same light and pots. one plant is given water that has been microwaved and the other plant is given regular tap water. their height is measured after 2 weeks.

Explanation:

Analyze the experimental setup

Using the Experimental Design knowledge point, we identify the components of the experiment described in the scenario:

• Two plants are grown under identical conditions (same light and pots).
• One plant receives microwaved water, while the other receives regular tap water.
• The height of the plants is measured after 2 weeks.

Identify the independent variable

Using the Independent Variable knowledge point
The factor deliberately changed by the experimenter is the type of water given to the plants (microwaved water vs. regular tap water).

Identify the dependent variable

Using the Dependent Variable knowledge point
The factor being measured or observed to see how it responds to the change is the height of the plants after 2 weeks.

Identify the controlled variables

Using the Controlled Variables knowledge point
The factors kept constant to ensure a fair test are the amount of light, the type of pots, and the duration of the experiment (2 weeks).

Answer:

• Independent Variable: Type of water given to the plants (microwaved water vs. regular tap water)
• Dependent Variable: Height of the plants (measured after 2 weeks)
• Controlled Variables: Type of light, type of pots, and duration of growth (2 weeks)