1. Made by: Gilbert Vincenta
Grade 7

2. Introduction
 Luminous: Objects that emit light
 Non-luminous: Can only be seen if they are reflecting
light from a luminous source.
 Rays: Smaller lines of light.

3. Classifying Non-Luminous Object
 Non-luminous materials can be classified as
transparent, translucent, or opaque according to the
way light behaves when it meets them.

4. Shadows
 Shadow = Region without light.
 Shape of the shadow may not identical to the shape of
the object.

5. Studying Reflections
 Incident ray
 Reflected ray
 Normal
 Angle of incidence
 Angle of reflection
 Plane mirror
 Image

7. Images
 There are 2 kinds of images: Real images and virtual
images.

8. The Periscope
 The combined of the 2 plane mirrors.

9. Surfaces
 There are 2 types of surfaces: Smooth surfaces and
rough surfaces.

10. Refraction & Dispersion
 Bending of the light ray is called refraction.
 Dispersion is the process in which the wavelengths
that travels at slightly different speeds and are spread
out.

11. The Rainbow

12. Colours
 There are 3 main colours : Blue light, red light, and
green light.
 These 3 main colours are combined to produce a new
colour in a different proportion for every new colour.