ساينس الصف الخامس الإبتدئي الفصل الدراسي الاول ساينس خامسة ابتدائي – ترم أول In This part we will study : 2. Light transmits through different materials: What happens when..? You look at a picture behind a piece of wood. (Why?) You can’t see the picture because wood is opaque material (which will not allow the light to transmit through). 3. Light reflection: Light reflection: It is the bouncing (returning back) of light rays when light falls on a surface. Factors necessary for light reflection: 1 – A source of light 2 – A reflecting surface. Light reflection can be divided into Irregular reflection Regular reflection It is the reflection of light on a rough reflecting surface, where the light rays are reflected and scattered in different directions. It is the reflection of light on a smooth and shiny reflecting surface , where the light rays are reflected directly in one direction. 4. Light refraction: It is the change in the direction of the light rays when light passes through the separating surface between two transparent media . لمتابعة مستر احمد الباشا وكل ما يخص الساينس : جروب الفيس بوك http://bit.ly/2Of1mcN صفحة الفيس بوك http://bit.ly/2Gq5xMo بالتوفيق مستر احمد الباشا