Question

Katherine wants to investigate if the time of day a plant is watered affects the growth of the plant. She hypothesizes that a plant watered in the morning will grow faster than a plant watered at other times of the day. Identify the specific independent and dependent variables that will be involved in an experiment to test this hypothesis. List at least five variables that should be controlled during the experiment. For each variable identified, give a specific suggestion for how it can be controlled during the experiment

Answer 1

The specific independent variable is the time of day the plant is watered, while the dependent variable is the growth of the plant. Five variables that should be controlled during the experiment are the amount of water, sunlight, soil, temperature, and plant age and size.

Step-by-step explanation:

The specific independent variable in Katherine's experiment is the time of day the plant is watered, while the dependent variable is the growth of the plant.

Five variables that should be controlled during the experiment are:

• The amount of water given to each plant
• The amount of sunlight each plant receives
• The type of soil used for each plant
• The temperature in which the plants are kept
• The age and size of the plants

To control these variables, you can:

• Measure and provide the same amount of water to each plant
• Ensure each plant receives the same amount of sunlight by placing them in identical light conditions
• Use the same type of soil for all plants
• Keep the temperature consistent for all plants
• Select plants of the same age and size for the experiment

Answer 2

Independent= time of day watered Dependent= Growth Variables= Amount of water. Amount of soil. Sunlight