GEOLOGY

Detailed explanation-1: -An amorphous solid does not have a sharp melting point but melts over a range of temperatures. For example, glass on heating first softens and then melts over a temperature range. Glass, therefore, can be moulded or blown into various shapes. Amorphous solid does not possess the characteristic heat of fusion.

Detailed explanation-2: -Different amounts of thermal energy are needed to overcome these different interactions. Consequently, amorphous solids tend to soften slowly over a wide temperature range rather than having a well-defined melting point like a crystalline solid.

Detailed explanation-3: -Therefore, the amorphous solids do not have a melting temperature but have a glass transition temperature. It is the temperature at which it attains a glassy state and is shown as Tg. Amorphous quartz or fused silica melts over a range of temperatures from 1500 0C to 2000 0C.

Detailed explanation-4: -Amorphous solids does not show sharp melting point.

Detailed explanation-5: -Solution : Glasses do not have sharp melting points because they are non-crystalline or amorphous solids. The bonds between atoms or molecules are not equally strong and hence do not break at the same temperature.