PHYSICS · Multi-part · CBSE · Physics · Thermal Properties of Matter · Thermal Properties of Matter
Problem
Answer the following, giving scientific reasons in each case:
(i) Water pipes installed outdoors in cold regions often burst on a frosty night, whereas buried pipes generally do not.
(ii) Fish survive in deep lakes even when the surface water is frozen solid.
(iii) Railway tracks are laid with small gaps at regular intervals.
(iv) Suggest one practical precaution that householders in cold climates can take to protect their plumbing systems from damage due to low temperatures.