This document discusses how vision works and the science of reflection. It explains that light reflects off shiny, smooth surfaces like mirrors, while it scatters off rough surfaces. When light hits different materials, it may reflect, scatter, or refract. Reflection causes light to bounce back at the same angle, while refraction bends the light. Experiments are described to observe reflection using mirrors and the bending of light when it passes through water or other transparent materials.
Force and its effects for class 8. this ppt provides an easy way to understand force and the effects of force by giving various daily life examples. It consists of animations through which students can easily understand.
Force and its effects for class 8. this ppt provides an easy way to understand force and the effects of force by giving various daily life examples. It consists of animations through which students can easily understand.
Explore how we see. Discover that our world of perception is not about documenting reality -- it's all about survival. We do not so much "picture" what's out there as we create a world of perception.
11. Testing Reflective Materials
Pale colour reflects more light than dark one. And mirror is the
best material to reflect most light because it smooth and shiny
12. Following are some rooms with different wall colour
The more pale the colour the more it reflects light
15. 3. Draw the reflection ray of following
picture
40
°
Mirror
16. 4. Draw the reflection ray of following
picture
40 40
° °
Mirror
17. 4. Draw the reflection ray of following
picture
40
°
Wood
18. 5. Which object applies reflection?
√
The other objects are applying refraction
19. Take a straw then insert it into a glass of
water
Draw the image of straw and glass from the
side of the glass then tell the changes
20. Take a clear plastic sheet. Drop a drop of water on
to the plastic using a straw. Put the drop of water
over a printed text!
Draw the image of printed text under the
drop of water then tell the changes!
21. What happen to the light when it
enters different medium?
The light is bent