class 6 science chapter light

1. Light
B.Sc. B.Ed. Integrated

3. What you see in these picture?

4. What you see in these picture?

5. Luminous Objects
• Objects that produce their own light are
called Luminous Objects.
• Example, Sun, Fire

6. Non-Luminous Objects
• Objects that do not produce their own light but are
visible when reflect light falling on them are
called Non-Luminous Objects.
• Example - Table, planets.

7. Name an insect which is luminous.

8. Fill in the blank
- Objects that produce their own light are
called……….
• Name some luminous objects & non luminous
objects.

9. Activity

10. Transparency

11. Name an object which can be
both opaque & translucent.

12. MCQ
Which types of objects do not allow light to pass
through them?
(a) Translucent
(b) Opaque
(c) Transparent
(d) Penumbra

14. Rectilinear propagation
• Light travels in a straight line. It is called rectilinear
propagation of light.

15. Reflection of light

17. MCQ
• Light travels in
(a) straight line
(b) curved line
(c) zig-zag line
(d) randomly

18. RECAPITULATION
 Define rectilinear propagation.
 Differentiate b/w non- luminous & luminous
 Explore about the transparency.
 Explain about the reflection.
 Value the importance of light in our daily
life.

19. HOME WORK
Q. Classify the objects or materials given below as opaque,
transparent or translucent and luminous or non-luminous:
Air, water, a piece of rock, a sheet of aluminium, a mirror, a
wooden board, a sheet of polythene, a CD, smoke, a sheet of
plane glass, fog, a piece of red hot iron, an umbrella, a lighted
fluorescent tube, a wall, a sheet of carbon paper. the flame of a
gas burner. a sheet of cardboard, a lighted torch, a sheet of
cellophane, a wire mesh, kerosene stove, sun. firefly, moon.

20. HOME WORK
Q. In a completely dark room, if you hold up a mirror in
front of you, will you see a reflection of yourself in the
mirror?
Q. Why should we not look at sun directly?
Q. What are incident ray & reflected ray?