Raisins swell up when placed in water.

Why do raisins absorb water when soaked in water ? Explain the phenomenon.

What makes the raisins to swell up when kept in water ?

Name the phenomenon by which raisins placed in water swall up.

When any dry plant material or seeds are kept in water, they swell up. Q (a) Name the phenomenon involved in this change.

Anahat is an eight year old girl who has just begun to learn swimming. At the moment she is in the swimming pool. Suddenly, Anahat finds that her earring has fallen into the water. It appears to her that the earring has not gone too deep. So, she begins to go further into swimming pool to retrieve her earring. Her trainer, who has been watching her movements, does not allow Anahat to go further and pulls her out of the swimming pool quickly. (a) Why does it appear to Anahat that her earring has not gone too deep in water ? Name the phenomenon involved. (b) Why does the trainer not allow Anahat to go further in the swimming pool ? (c) Give one example of the effect of phenomenon involved in the above episode in which a glass slab is used. (d) What values does the trainer show in the above episode ?

(a)When any dry plant material or seeds is/are kept in water, they swell up:-(a) Name the phenomenon involved in this change. (b)When any dry plant material or seeds is/are kept in water, they swell up:-(b) Define this phenomenon. (c )When any dry plant material or seeds is/are kept in water, they swell up:- (c) Give two conditions essential for the phenomenon to occur