glass is used everywhere in our life it is used for car windows, home windows, glass jars, watches, the vacuum tube, and many other things. Glass is made out of sand which sand is made out of silica. Most glass that we see today is usually soda lime glass because pure quartz glass takes the extremely high temp to melt. It is thought that the first people to use it, was Mesopotamia and ancient Egypt. over time glass became more and more popular because it was used for necklaces beads and many other things. Summary: Glass is a crucial part of our lives. Glass is mostly made out of silica. (Here is a video of the making of glass)
Very interesting, Ezra