MHSB - 7 - Science :: Effects of light

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MSCERT-Sci-Grade 7

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Course content
Textbook
Teaching learning resources

Course Content / Subtopic list:

Scattering of light
The shadow obtained from a point source and extended source
Eclipses
Zero shadow day

Expected Learning Outcome:

SWBAT-

Define-light,shadow,eclipse
Differentiate between solar eclipse and lunar eclipse,Umbra and penumbra
Explain the scattering of light

English Medium

English medium textbook

Marathi Medium

Marathi medium textbook

Lesson Plan

[Contributor - Sowmya Vaidyanathan]

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=1qTYhZiG22ux6wyQDzmbijxDt2ZDIg6X9 (Lesson Plan - English)

https://drive.google.com/open?id=1xknR3Of2FsTTKe6ED6I-k6LYuI3QzWIK (PPT - English)

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.

Videos

[Contributor - Kripa S]

https://www.youtube.com/watch?v=vt-SG7Pn8UU (reflection of light in English)

https://www.youtube.com/watch?v=xZPAqvm73M0 (Propogation of Light - Marathi)

Images

[Contributor - Kripa S]

http://educationwithfun.com/pluginfile.php/795/mod_page/intro/act%201.PNG (shadow formed)

https://userscontent2.emaze.com/images/fa04b798-97ef-4db3-9059-e8a0a00ca80f/abeeaee6-d93d-46c4-b385-b9b9d4bc7de0.png (example of eclipse)

http://rajkumarbiology.weebly.com/uploads/9/6/4/2/9642700/129689229.jpg?324 (importance of light for plants)

Activities

[Contributor - Kripa S]

1. https://www.youtube.com/watch?v=adISHi9AYug (Reflection, Refraction)

2. https://www.youtube.com/watch?v=GIMxKz-tCmw (Reflection)

3. Take a half meter long cardpaper, normal paper or plastic sheet and make a tube out of it. Look through it at some object. Now bend the tube and try to look at the object. The object will not be visible. Why so? It is because light travels in a straight line.

4. Take two pots with new saplings. Keep one pot in darkness and other pot in sunlight. After 2 days observe the two saplings. What change do you observe? The plant that received sunlight grows and looks fresh and green, while the other plant looks pale. This shows that light is necessary for growth of plants

[Contributor - Sowmya Vaidyanathan]

Lesson Plan version 1.1 activities

1. Take clear water in a glass beaker. Pass a beam of laser rays through it. Check whether the beam is seen in the water. Now use The dropper to add few drops of milk to the water and stir. The water becomes slightly turbid. Now pass the laser beam into it again. A light beam will show the existence of light rays.

2. Cover the mouth of the lampshade properly with the black paper using sticking tape. Pick a hole of 1 to 2mm in the centre of the paper using a packing needle. Take clear water in beaker. Light the bulb and place the beaker in contact with the hole.