TNSB - 8 - Science :: Light and Sound

Lesson Plan
Textbook
Videos
Images
Activities
Additional Aids
Transliteration
Worksheets
Assessments

[Contributor - Gayathri Arun Kumar]

Dear Volunteer,

Please find below the detailed lesson plan and PPT for this chapter in the language mentioned against the respective link. While the lesson plan will give an overall flow of the lesson, the PPT will include lesson flow as well as the presentations for the class.

https://drive.google.com/open?id=1yKbcWz59dEtfvAp1S67kM8w6llRkp59e (Lesson Plan - English)

https://drive.google.com/open?id=1RDZ5bAOpHVW-g8IjXvXCo0TlVwyXYkrW (PPT - Tamil)

You may use the content as it is or download and modify them to suit the students requirements.

If you feel any major modifications or additions are carried out by you in the form of adding any new activity, presentations, videos etc. we request you to send the modified version to submitcontent@evidyloka.org for enabling upload the modified version.

The worksheets of the lesson can be accessed from the worksheet tab.

Kindly rate the lesson plan and share your suggestions and comments on the lesson plan in the comments box below. Your valuble suggestions and comments will help us to improve the content.

[Contributor - Rini Jose]

https://drive.google.com/open?id=1ahpMT8iEmrWH-zAGyAZLPNgZztRcm1rG (English)

https://drive.google.com/open?id=1_ODuZOYkGio7fka7vAXQ-OOUPQL_vEmp (Tamil)

[Contributor - Gayathri Arun Kumar]

Lesson Plan version 1.1 videos

https://www.youtube.com/watch?v=dwxaq4c9K6k (Reflection of light)

https://www.youtube.com/watch?v=s8ur3rbYfx8 (laws of reflection)

https://www.youtube.com/watch?v=ETF2-Zz3J18 (reflection of light - activitiy).

https://www.youtube.com/watch?v=a1kFMSpvesU (regular , irregular reflection)

https://www.youtube.com/watch?v=rHtootmmIg8 (Multiple reflection , multiple images)

https://www.youtube.com/watch?v=jQDRNb-E-cY (Refraction)

https://www.youtube.com/watch?v=phncGyF1Mog (Everyday effects of refraction)

https://www.youtube.com/watch?v=T-iy29oEmSI (Total internal reflection)

https://www.youtube.com/watch?v=eDIma_Ai1Rc (Human eye and its parts)

https://www.youtube.com/watch?v=nbwPPcwknPU (Human eye and its parts)

https://www.youtube.com/watch?v=ggPOhxtWKVw (How sound is produced by humans)

https://www.youtube.com/watch?v=T8lKKlnnC6M (How we hear sound)

https://www.youtube.com/watch?v=C6ZQUmBg1eU (How we hear)

https://www.youtube.com/watch?v=p3Oy4lodZU4 (How we hear)

https://www.youtube.com/watch?v=lGYUVEj05yU

https://www.youtube.com/watch?v=CY04lXo9brE

https://www.youtube.com/watch?v=2rl007awPC8 (noise pollution)

https://www.youtube.com/watch?v=smLUnse4gWs (Fiber optics)

[Contributor - Kripa S]

https://www.sciencelearn.org.nz/system/images/images/000/000/046/full/Lake-reflection20150805-30600-1t8rqoj.jpg?1447040426 (reflection of light)

http://www.ekshiksha.org.in/sound_VIII/figure_13.JPG (propagation of sounds in solids)

http://www.ekshiksha.org.in/sound_VIII/figure_11.JPG (propagation of sound in liquids)

https://s-media-cache-ak0.pinimg.com/736x/d1/09/04/d109049b8cd95b32bc1a852c24714085.jpg (Structure of an ear)

[Contributor - Kripa S]

https://www.youtube.com/watch?v=ZNmjBOVIAME (talk from a distance)

[Contributor - Gayathri Arun Kumar]

Lesson Plan version 1.1 activities

1. Materials-Drawing sheet, a protractor, a plane mirror, torch light.

Procedure-I arrange the drawing sheet, protractor and a plane mirror as shown in the diagram. Using the protractor I draw a normal at a point. Then I draw the number of lines at different angles. From the torch light, I make a ray of light to pass along a line and draw the path of the reflected ray. I measure the angle of reflection. I repeat the experiment for different angles of incidence and I measure the corresponding angle of reflection and tabulate the measures.

2. Materials: wood, window panes, table tops, polished granite surfaces, paper. Procedure: Let us look ourselves through the surface of all these objects.

3. Materials-plane mirrors, a candle.

Procedure: I keep a burning candle before a plane mirror. I hold another plane mirror at an angle to the first mirror. Then I count the number of images formed. I do the same by keeping the mirrors at different angles and I count the number of images formed.

4. Materials: Two rubber strips of the same length and width. Procedure: I take two rubber strips of the same length and width. I put them one above the other. I hold them at both ends and stretch them tight. I blow air through the split between them.

[Contributor - Gayathri Arun]

https://drive.google.com/open?id=1Q0tIEEP1P3tpxCkJDnCy-jsoE9io8oXW

[Contributor - Gayathri Arun Kumar]

Lesson Plan version 1.1 PPT

https://drive.google.com/open?id=1RDZ5bAOpHVW-g8IjXvXCo0TlVwyXYkrW (PPT - Tamil)

[Contributor - Ramkee]

Term	Transliterated Term	Translated Term
Reflection	ரிபிலெக்ஷன்	ஓளி எதிரொளிப்பு
Parallel Beam	பரலல் பீம்	இணைக்கற்றை
Convergent Beam	கான்வெர்ஜெண்ட் பீம்	குவிக்கற்றை
Divergent Beam	டை வெர்ஜெண்ட் பீம்	விரி கற்றை
Incident ray	இன்சிடென்ட் ரே	படு கதிர்
Reflected ray	ரி பிளெகடட் ரே	எதிரொளிப்புக்கதிர்
Angle of incidence	ஆங்கில ஆப் இன்சிடென்ஸ்	படுகோணம்
Angle of reflection	ஆங்கில ஆப் ரிபிலெக்ஷன்	எதிரொளிப்பு படுகோணம்
Refraction	ரிபிரக்ஷன்	ஓளி விலகல்
Total Internal Reflection	டோடல் இன்டெர்னல் ரிபிலெக்ஷன	முழு அக எதிரொளிப்பு
Medium	மீடியம்	ஊடகம்
Amplitude	அம்பிலிட்டுட்	அதிர்வெண்
Time Period	டைம் பீரியட்	அலைவுக் காலம்
Frequency of Vibration	பிரீக்வென்ஸி ஆப் வைபரேஷன்	வீச்சு
Prongs	ப்ரொங்ஸ்	புயங்கள்
Audible	ஆடிப்பில்	செவியுணர்
Inaudible	இன் ஆடிப்பில்	செவியுணரா
Optical Fibre	ஆப்டிகல் பைபர்	கண்ணாடி ஓளி இழை
Fibre Optics	பைபர் ஆப்டிக்ஸ்	ஒளியிழை இயல்