What's this job?
Glassblower
What glass is made from?
Limestone, sand and sodium carbonate
At What Temperature Does Glass Melt?
Around 1500°C
Is glass a solid?
No, amorphous solid
How this is called?
Stained glass
Name 5 things made of glass:
Glass, glasses, window, vase, mirror...
Where is located the world's largest aquarium window?
In Zhuhai, China
Where is the longest glass bridge?
In Vietnam
How is this called?
Bulletproof glass
How many % of glass can we recycle?
It's 100% recyclable
When were plate (flat) glass windows invented?
In the 17th century
When was the first glass object created by humans?
About 4000 years ago