Question

I. Give reason for the following.
1. Quartz crystals are used in clocks and watches.

Answer 1

Answer:

Explanation:

The ability to convert voltage to and from mechanical stress is called piezoelectricity. Quartz crystals maintain a precise frequency standard, which helps to regulate the movement of a watch or clock, thus making the timepieces very accurate.

Answer 2

Answer:

because they are very strong and visible