Question

1. Take a transparent plastic bottle, a handful of soil, some stones, sand, some dry leaves and water.
2. Cut off the upper tapering part of the bottle. Put the rest of the materials in the lower part and add water.
3. Stir the mixture thoroughly and put it aside.

Observe it the next day and answer.

• How does the mixture in the bottle look now?
• Do you see layers in it?
• What is seen in the different layers from top to bottom?

Answer 1

• The mixture settles down, and different materials can be seen separately. The water becomes clearer as the soil and other heavier materials settle at the bottom.
• Yes, different layers are formed because the materials have different weights and sizes.
• The dry leaves are floating above the water at the top. Then there is a layer of soil, which forms a layer above the sand. Below the sand, we see a layer of small stones, and the big ones have settled down at the bottom of the bottle.