Question

hannahs mother wants to plant a garden in the spring and needs to know how deep to plant pea seeds. to help her mother, hannah designed an experiment. she layered small stones and soil in an aquarium. she then planted four pea seeds at four different depths in the soil. she placed the seeds at depths of 1.0 centimeter (cm), 2.0 cm, 4.0 cm, and 6.0 cm below the surface of the soil. hannah watered the seeds and put the aquarium in a sunny location.
what should hannah do next in order to have useful information for her mother?
record when the seeds sprout and begin to grow.
make sure the seeds have enough sunlight.
predict which seed will sprout.
plant more seeds.

Explanation:

In an experiment to determine the best depth for planting pea seeds, after setting up the experiment (planting seeds at different depths, watering, and placing in a sunny location), the next logical step is to observe and record the outcome. Recording when the seeds sprout and begin to grow will provide data on how depth affects germination, which is useful information for her mother. Making sure seeds have enough sunlight is already addressed (putting the aquarium in a sunny location). Predicting which seed will sprout is not collecting data. Planting more seeds might be part of repeating the experiment for reliability, but the immediate next step after setup is recording results.

Answer:

Record when the seeds sprout and begin to grow.