CBSE Book Class 8 Science Activity I Can See it

CBSE Class 8 Science Activity I Can See it. Students can download the specific chapters from the CBSE and NCERT text books from studiestoday.com. Please refer to the attached file to access the chapters. The books and specific chapters have been collected by the tutors on studiestoday for the benefit of CBSE students. They can access these chapters anywhere and use them for their studies.

 LIGHT

Have you ever seen a solid object that can be completely invisible? You see such an object everyday! Yet  you pay no attention at all! Do you know what it is? Try this interesting activity. Look through a window into a room at night while standing outside in the  dark. Look for the glass on the window. You know it's there. You can feel it if you touch it. Yet you cannot  see the glass at all!.

Now look at a window of a dark room from the outside. You can't see a thing inside. But the glass may now  be seen. Can you say how? You all know that light is needed to see. In order to see something an object must 'bounce' or 'reflect' light  to your eye. This bouncing of light is called reflection. When you stand in the dark outside the lighted  room, reflection of light from the glass window is very weak as compared with the light coming straight  through. So you do not see the glass at all!  Objects in the room are visible when the lights are on because they reflect light to your eye. Your eye  then captures this light and you can see the objects. 

Please refer to the link below - CBSE Class 8 Science Activity I Can See it