Question

To walk through a waterlogged area, you usually shorten the length of your dress by folding it. Can this change be reversed?

Answer 1

Hint: To approach this question, we should have a basic idea of reversible and irreversible changes. The overview on physical changes, chemical changes and others along with examples will help us in the long run.

Complete answer:
To know in detail, let us study about changes. The first one is physical change in which no new substance is formed; only state of matter changes and chemical composition remains the same. For example ice to water to steam. The second one is chemical change in which new substances are formed. For example, burning of magnesium in the presence of oxygen gives magnesium oxide. Now coming to the question,
The given statement in the question is an example of reversible change. Since clothes can be folded and unfolded, so the change can be done by unfolding the dress.

Note:
Other changes are reversible changes and irreversible changes. The changes in which original material is obtained back are known as reversible changes. For example, ice on heating converts into water and water on cooling at very low temperature converts into ice. In irreversible change, a change cannot be reversed. For example, tearing a paper into pieces.