Difference between revisions of "APSB - 8 - Science :: Synthetic fibres and plastics"

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(Worksheets)
(Additional Aids)
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=Videos=
 
=Videos=
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[Author - Divya Goil, Kripa S]
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https://www.youtube.com/watch?v=RUCqwYc91Bw (natural vs man made fibres - English)
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https://www.youtube.com/watch?v=KlpLlUGu7zo (How polyester is useful- English)
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=Images=
 
=Images=
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=Additional Aids=
 
=Additional Aids=
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[Author - Lalitha Bhattiprolu]
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https://drive.google.com/open?id=0BzNF2YyqQxJ-N2pkbWV6WGkzQWs
  
 
=Transliteration=
 
=Transliteration=
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{| class="wikitable"
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|''Term'''          ||          '''Transliterated Term'''      || '''Translated Term'''||
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|-
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|Artificial                               ||           ఆర్టిఫిషల్                     ||             కృత్రిమ ||
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|-
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|Raw                                      ||                   రా                             ||                ముడి ||
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|-
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|Chemicals                                ||            కెమికల్స్                      ||            రసాయనాలు ||
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|-
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|Environment                              ||       ఎన్విరాన్మెంట్                 ||            వాతావరణం ||
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|-
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|Hazard                                   ||              హజార్డ్                        ||             విపత్తు ||
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|-
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|Natural                                  ||              నాచురల్                        ||                 సహజ ||
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=Worksheets=
 
=Worksheets=

Revision as of 06:32, 24 July 2017

Go To: APSB-Science-Grade 8

[edit]

[Author - Anu Nived]


Objective: To teach the students about synthetic fibres and plastics and their types

Subtopics to be covered:

- Why do we need synthetic fibres

- Types of plastics

- How plastic affects environment and 4R principle

Learning Outcome:

- Students know how nylon, rayon, etc. are prepared

- They can identify types of plastics

- They are aware of 4R principle


[Author - Divya Goil, Kripa S]


https://www.youtube.com/watch?v=RUCqwYc91Bw (natural vs man made fibres - English)

https://www.youtube.com/watch?v=KlpLlUGu7zo (How polyester is useful- English)


[Author - Kripa S]


1. Select a piece of cotton fabric. Now, try to find a loose thread or yarn at one of the edges and pull it out. If no loose yarns are visible, you can gently pull one out with a pin or a needle. We find that a fabric is made up of yarns arranged together. What are these yarns made of?

2. Take out a yarn from a piece of cotton fabric. Place this piece of yarn on the table. Now, press one end of the yarn with your thumb. Scratch the other end of the yarn along its length with your nail. Do you find that at this end, the yarn splits up into thin strands.


Term' Transliterated Term Translated Term
Artificial                                         ఆర్టిఫిషల్                                 కృత్రిమ 
Raw                                                         రా                                            ముడి 
Chemicals                                            కెమికల్స్                                  రసాయనాలు 
Environment                                     ఎన్విరాన్మెంట్                            వాతావరణం 
Hazard                                                హజార్డ్                                     విపత్తు 
Natural                                                నాచురల్                                         సహజ 
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