How is glass made?

Answer 1

Glass is formed by heating sand to its melting point. Objects are then either cast or blown to their desired shape and allowed to cool slowly

Glass is made from a mixture of sand and other materials. Just regular sand can be made into glass, but it must be heated to about 3,000 degrees Fahrenheit. It's also possible to make glass out of sand, sodium carbonate, and limestone. Together, they can melt at a lower temperature and make glass.

Traditionally it was mass with fine, high quality glass, cut into shape and ground down and polished until it was the correct shape, however with the advent of plastics, they are usually made from polycarbonate or CR-69 (allyl diglycol carbonate).

well first they et sand. then they melt it in a smelter and add stuff like lead.

after that they let it cool down and it makes glass.

did you know glass is a liquid =D

Answer 2

Sand is compressed at really high temperatures and than rapidly cooled