Question

use the scenario to answer the question.

a student decides to test the effects of watering on plants. she chooses 6 tomato plants and places all of them in the same part of a garden with plenty of space between them. they get the same amount of sunlight and the same amount of fertilizer each day. she gives each plant a different amount of water, with the first plant getting no water and the others getting 200 ml, 400 ml, 600 ml, 800 ml, and 1,000 ml. she records the total height of the plants each day for 3 weeks.

what is the independent variable in this experiment?
(1 point)

○ plant height

○ amount of water

○ sun exposure

○ amount of fertilizer

Explanation:

The independent variable is the factor intentionally changed in an experiment to test its effect. In this scenario, all other factors (sunlight, fertilizer, location) are kept constant, while only the volume of water given to each plant is varied. Plant height is the dependent variable being measured, and sun exposure/fertilizer are controlled variables.

Answer:

amount of water