Researchers investigated the effect of light wavelength on the photosynthetic rate of *Elodea* plants. Over a 24-hour period, three identical setups were maintained at a constant temperature of and exposed to different colors of light (red, blue, or green). The rate of photosynthesis was determined by measuring the volume of oxygen gas produced by the plants in milliliters.
Match each component of the experiment to the correct variable type it represents.
- Light wavelength (red, blue, or green)Independent variable
- Volume of oxygen gas producedDependent variable
- Temperature of the experimental setup ()Controlled variable
Cevap
Light wavelength matches the independent variable, the volume of oxygen gas produced matches the dependent variable, and the temperature matches the controlled variable.
Matching the light wavelength to the independent variable is correct because the wavelength is the factor actively manipulated by the experimenter. Matching the volume of oxygen gas to the dependent variable is correct because this is the measured outcome that responds to the changes in light. Matching the temperature of 22°C to the controlled variable is correct because this condition is kept constant across all setups to prevent it from affecting the photosynthetic rate.
Adım Adım Çözüm
Anahtar Kavram
Identifying independent, dependent, and controlled variables in a scientific experiment.