Answer:
Soil contains many kinds of particles, which swirl in the water when you shake the jar. They eventually settle according to their size and weight. Larger, heavier particles settle first (pebbles, then soil and sand) and smaller, lighter particles settle last (fine silt, then finer clay). Sticks and bits of leaf matter float.
What happens when you soak soil in water?
Soaking soil has the same effect that vibrations have on cereal. Water acts as both a lubricant and a carrier of dirt particles. As this water drains from the soil, gravity pulls these loose particles downward, filling in air gaps.
Explanation:
