DSERT - 7 - Science :: Light
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[Contributor - Anu Nived]
Objective: To teach the students about light and how it travels
Subtopics to be covered:
- Reflection of light
- Refraction of light
- Concave and Convex lens
- How rainbow is formed
Learning Outcome:
- Students know that various sources of light and propagation of light
- They know about luminous and non luminuous bodies
- They know about the practical applications of convex and concave lens
[Contributor - Kripa S]
http://ktbs.kar.nic.in/new/website%20textbooks/class7/7th-kannada-science-02.pdf#page=75 (Kannada Medium)
http://ktbs.kar.nic.in/new/website%20textbooks/class7/7th-english-science-02.pdf#page=75 (English Medium)
[Contributor - Kripa S]
https://www.youtube.com/watch?v=vt-SG7Pn8UU (reflection of light in English)
[Contributor - Anu Nived]
https://www.sciencelearn.org.nz/system/images/images/000/000/046/full/Lake-reflection20150805-30600-1t8rqoj.jpg?1447040426 (reflection of light)
http://maggiesscienceconnection.weebly.com/uploads/5/1/0/5/5105330/__524973087.jpg (convex, plane and concave mirror)
http://www.ekshiksha.org.in/images_light_VII/figure_18.JPG (torch reflector)
https://3.imimg.com/data3/OB/HP/MY-2271920/newton-s-colour-disc-500x500.jpg (newton's color disc)
[Contributors - Kripa S, Rudrakant S]
1. https://www.youtube.com/watch?v=kXh7vGJastM (Tracing path of light)
2. Take a stainless steel spoon. Bring the outer side of the spoon near your face and look into it. Do you see your image in it? Is this image different from what you see in a plane mirror? Is this image erect? Is the size of the image the same, smaller or larger?
3. https://www.youtube.com/watch?v=TqA_YPZkMBU (rainbow)
4. https://drive.google.com/open?id=0BzNF2YyqQxJ-R2M5SGItdk1FM1E
[Contributor - Rudrakant S]
https://drive.google.com/open?id=0BzNF2YyqQxJ-WUdnZzJ3Tm5TMFE
| Term' | 'Transliterated Term' | 'Translated Term' |
| Luminous | ಲುಮಿನೌಸ್ | ಸ್ವಯಂ ಪ್ರಕಾಶಿತ |
| Non luminous | ನಾನ್ ಲುಮಿನೌಸ್ | ಸ್ವಯಂ ಪ್ರಕಾಶಿತವಲ್ಲದ |
| Body | ಬಾಡಿ | ಕಾಯ |
| Ray | ರೇ | ಕಿರಣ |
| Light | ಲೈಟ್ | ಬೆಳಕು |
| Beam of light | ಬೀಮ್ ಒಫ್ ಲೈಟ್ | ಕಿರಣದಂಡ |
| Transparent | ಟ್ರಾನ್ಸ್ಪೆರೆಂಟ್ | ಪಾರದರ್ಶಕ |
| Translucent | ಟ್ರಾನ್ಸ್ಲ್ಯೂಸೆಂಟ್ | ಮಿತ ಪಾರದರ್ಶಕ |
| Opaque | ಒಪೆಕ್ಯೂ | ಅಪಾರದರ್ಶಕ |
| Shadow | ಶಾಡೋ | ನೆರಳು |
| Reflection | ರೆಫ್ಲೆಕ್ಷನ್ | ಪ್ರತಿಫಲನ |
| Mirror | ಮಿರರ್ | ದರ್ಪಣ |
| Image | ಇಮೇಜ್ | ಬಿಂಬ |
| infinite | ಇನ್ಫೈನೈಟ್ | ಅನಂತ |
| Refraction | ರೇಫ್ರಾಕ್ಷನ್ | ವಕ್ರೀಭವನ |
| Convex lens | ಕಾನ್ವೆಸ್ ಲೆನ್ಸ್ | ಪೀನ ಮಸೂರ |
| Concave lens | ಕಾನ್ಕೇವ ಲೆನ್ಸ್ | ನಿಮ್ನ ಮಸೂರ |
| Centre of curvature | ಸೆಂಟರ್ ಒಫ್ ಕರ್ವ್ವಚುರ್ | ವಕ್ರತಾ ಕೇಂದ್ರ |
| Principal axis | ಪ್ರಿನ್ಸಿಪಲ್ ಆಕ್ಸಿಸ್ | ಪ್ರಧಾನ ಅಕ್ಷ |
| Optic center | ಆಪ್ಟಿಕ್ ಸೆಂಟರ್ | ದ್ಯುತಿ ಕೇಂದ್ರ |
| Principal focus | ಪ್ರಿನ್ಸಿಪಲ್ ಫೋಕಸ್ | ಪ್ರಧಾನ ನಾಭಿ ಬಿಂದು |
| Focal length | ಫೋಕಲ್ ಲೆಂಥ್ | ನಾಭಿ ದೂರ |
| Radius of curvature | ರೇಡಿಯಸ್ ಒಫ್ ಕರ್ವ್ಚಚುರ್ | ವಕ್ರತಾ ತ್ರಿಜ್ಯ |
| Ray diagram | ರೇ ಡೈಗ್ರಾಮ್ | ರೇಖಾ ಚಿತ್ರ |
[Contributor - Rudrakant S]
https://drive.google.com/open?id=0BzNF2YyqQxJ-QmJsZVpmcllzcGs
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