DSERT - 7 - Science :: Friction

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[Author - Anu Nived]

Objective: To teach the students about about friction and types of friction

Subtopics to be covered:

-Factors affecting friction

-How to increase and decrease friction

Learning Outcome:

- Students can relate friction with their day to day life (how ball bearings work, rubbing hands with soil, etc.)

- They know about the effects of friction

[Author - Kripa S]

http://ktbs.kar.nic.in/new/website%20textbooks/class7/7th-kannada-science-01.pdf#page=36 (Kannada Medium)

http://ktbs.kar.nic.in/new/website%20textbooks/class7/7th-english-science-01.pdf#page=36 (English Medium)

[Author - Kripa S]

https://www.youtube.com/watch?v=PNDRIicw4E0 (English - Friction)

[Author - Anu Nived]

http://study.com/cimages/multimages/16/rsz_matches-637771_640.png (friction)

http://www.ekshiksha.org.in/images_friction_VIII/figure_11.JPG (increase friction)

http://image.wistatutor.com/content/feed/tvcs/Image20on20decreasing20and20increasing20friction.JPG (reduce and increase friction)

http://www.mstworkbooks.co.za/natural-sciences/gr9/images/gr9ec01-gd-0032.png (static friction)

[Author - Kripa S, Rudrakant Sollapur]

1. Make an inclined plane on a smooth floor, or on a table. You may use a wooden board supported by bricks, or books. Put a mark with a pen at any point on the inclined plane. Now let a pencil cell move down from this point. How far does it move on the table before coming to rest? Note down the distance. Now spread a piece of cloth over the table. Make sure that there are no wrinkles in the cloth. Try the activity again.

2. http://www.arvindguptatoys.com/toys/books.html (tug of war activity)

3. https://drive.google.com/open?id=0BzNF2YyqQxJ-V1NiR2pENFpkWnM

[Author - Rudrakant Sollapur]

https://drive.google.com/open?id=0BzNF2YyqQxJ-VUxtVUdva0oyUU0

Term'	Transliterated Term	Translated Term
Friction	ಫ್ರಿಕ್ಷನ್	ಘರ್ಷಣೆ
Frictional Force	ಫ್ರಿಕ್ಷನಲ್ ಫೋರ್ಸ್	ಘರ್ಷಣಾ ಬಲ
Static Friction	ಸ್ಟಾಟಿಕ್ ಫ್ರಿಕ್ಷನ್	ಸ್ಥಾಯಿ ಘರ್ಷಣೆ
Rolling Friction	ರೋಲಿಂಗ್ ಫ್ರಿಕ್ಷನ್	ಉರುಳು ಘರ್ಷಣೆ
Sliding Friction	ಸ್ಲೈಡಿಂಗ್ ಫ್ರಿಕ್ಷನ್	ಜಾರು ಘರ್ಷಣೆ
Motion	ಮೋಷನ್	ಚಲನೆ
Lubricant	ಲೂಬ್ರಿಕೆಂಟ್	ನುಣುಪುಕಾರಕ / ಹೆರೆ

[Author - Rudrakant Sollapur]

https://drive.google.com/open?id=0BzNF2YyqQxJ-SXdyS3VKM01ucFU

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