Introduction
Glass production involves two main methods – the float glass process that produces sheet glass, and glassblowing that produces bottles and other containers.
Here you will be able to acquire knowledge of glass production process.
Task
In order to master the topic of glass production watch this video in ENGLISH:
Now to really understand the topic deeper, open this link and read about glass production process:
https://www.aisglass.com/glass-manufacturing-process
After watching this video and reading about glass production answer the following 10 questions, which will strengthen your knowledge:
1. Na2O*CaO*6SiO2 <= What resembles this chemical equation?
A) Simple glass chemical equation.
B) Sand chemical equation.
C) Cement chemical equation.
2. Which are 3 main materials that use to produce glass?
A) NaCl, C2H4, H2O
B) SiO2, CaCO3, Na2CO3
C) NaOH, H2SO4, Al2O3
3. Fine grained ingredients closely controlled for quality, are mixed to make a batch, which flows into the furnace, which is heated up to (degrees)?
A) to 100 degree Celsius
B) to 4000 degree Celsius
C) to 1500 degree Celsius
4. What is Annealing?
A) A process of slowly cooling hot glass objects after they have been formed, to relieve residual internal stresses introduced during manufacture.
B) It reveals process faults upstream that can be corrected.
C) A process of melting glass objects before they have been formed, to relieve residual internal stresses introduced during manufacture.
5. Does inspection take place at every stage?
A) Yes
B) No
C) It is not important at any stage.
6. When the glass is ready to be sold?
A) After melting.
B) After annealing.
C) After cutting to order.
7. Can the glass be recycled repeatedly?
A) Yes.
B) No.
C) Glass can not be recycled at all.
8. Think of goods that can be made out of glass material.
9. Name one glass production company.
10. Think of one more chemical compound/ material that is used to produce glass.
Process
To be able to answer 10 questions, you have to learn the theme of the glass production process. If the video material and the links did not provide a complete understanding of the topic, you can use these links http://www.consol.co.za/business/why-glass/glass-manufacturing-process
Evaluation
10 questions are corresponding to 10 points so it means that for each wrong answer one less point!
Conclusion
This work will gain your knowledge of the glass production process.
Credits
Šis darbs ir veidots par ķīmijas un vides tehnoloģijām- stikla ražošana.
Darba materiālos ir dots video un mājaslapa, kur iegūt zināšanas par stikla ražošanu. Ja šie materiāli nedeva pilnīgu sapratni par šo tēmu, dota vēlviena mājaslapa.
Darba uzdevumā ir 10 jautājumi par stikla ražošanu uz kuriem atbildot skolēns nostiprina savas zināšanas.
Teacher Page
Here are the answers to all of the questions:
1.A)
2.B)
3.C)
4.A)
5.A)
6.C)
7.A)
8. Many options ( for example, bottles, lens etc.)
9. Many options ( for example, AS "Grīziņkalns" etc.)
10. Many options ( for example, Fe2O3, FeO etc. )