Question

Describe an activity to separate a mixture of sand and water.

Answer 1

Take an empty beaker and fill water to about half the level of beaker. Now, add some sand in the beaker containing water. Stir the mixture of sand and water well. Set it aside for some time.

After some time, sand particles will start settling at the base of the beaker, forming sediment. This process is called as sedimentation.

Now, transfer the supernatant (water) through a glass rod to another beaker without disturbing the sediment. This process is called decantation.

You will observe that clear water and sand get separated from the mixture of sand and water.