1. Name:-Shaikh Yasmin RashidStd:-VIIChapter:-Propogation of light

2. Propogation of lightshadow 3. Transperency of material depends upon theamount of light that can pass through it. 4. Light travels in a straight line 5. What happens when an opaque object comesin the path of light? 6. To form a shadow a source of light is required 7. Can transparent object form a shadow? 8. Transparent object allows all the light to passthrough..so no shadow is formed 9. Why we cannot see the shadow of a bird flyinghigh 10. Shadow of a bird flying low 11. To form a shadow a screen is required 12. Screen should be behind the object 13. Screen is required to caste a shadow 14. Characteristics of shadowShadows are always black 15. Shadow only shows the shape or outline ofobject 16. Shape of the shadow changes with the changein the position of the opaque body 17. How to change the size of shadow? 18. Requirements for shadow 19. Two parts of shadow 20. Umbra:darker part of shadow 21. Penumbra:fainter part of a shadow 22. What does Islam says about shadow? 23. Fun with shadows 24. EVALUATION The path of light is ________ The penumbra is faint.(say true or false) Fun time:You and your friend is standing at a same distance from awall with a same sized ball.what would you do to make a biggershadow on a wall without changing a ball.