Fill in the Blanks The Fascinating World of GlassOnline version Test your knowledge about glass and its various applications in this engaging fill-in-the-blanks game! by Marta Alcaraz González 1 shaped heated limestone sand Glass soda ash is a material made primarily from . To create glass , sand is mixed with and and then at very high temperatures until it melts . Once melted , it can be into various forms . As it cools , it solidifies and becomes the hard material we are familiar with . 2 translucent, depending windows opaque While lenses light telescopes many people think of glass as transparent , it can also be or on how it's made . The ability of glass to let varying degrees of pass through makes it perfect for , allowing us to see outside while protecting us from the elements . It's also very smooth and can be molded into sharp , precise shapes , which is why it's used for items like in glasses , , and cameras . 3 breaking tougher strengthened tempered Glass can also be in various ways to make it more resistant to . For instance , glass is processed to be , and when it does break , it crumbles into smaller , less sharp pieces , making it safer for users , like in car windows or shower enclosures . 4 fibers signals optical data copper pulses transmission light In modern applications , glass has been transformed into to send and receive . These ultra - thin strands of glass channel over vast distances with minimal signal loss . The advantage of optical fibers is their capacity for data ; unlike traditional wires which rely on electrical , optical fibers convey information using of light . This method can handle a tremendous amount of data , far outpacing most conventional transmission techniques .
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