What explains the differences in the amount of soil collected by different groups in the experiment?

The differences in the amount of soil collected by different groups in the experiment can be attributed to variances in water pouring technique and force. When conducting an experiment that involves collecting soil with the addition of water, the method in which water is poured can significantly influence the soil’s displacement and retention.

For instance, if one group pours water more forcefully, it may either wash away more soil or compact it differently, leading to a varied amount collected compared to a group that pours more gently. Similarly, the angle of the pour and the distribution of water across the soil can affect how much soil is moved or preserved, resulting in differences in the final amounts collected.

In contrast, the type of soil used and differences in soil types across the tray may impact the experiment, but they would not directly account for variances in collection measurements observed among groups. Amount of sunlight received does not relate to the amount of soil collected in this context, as it primarily affects soil temperature and moisture rather than the physical collection process itself.